java.lang.Object
- java.lang.Enum<BrowserVersionFeatures>
- - org.htmlunit.BrowserVersionFeatures

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<BrowserVersionFeatures>
```
public enum BrowserVersionFeatures
extends java.lang.Enum<BrowserVersionFeatures>
```
Constants of various features of each BrowserVersion.

Enum Constant Summary

Enum Constants
Enum Constant	Description
`ANCHOR_EMPTY_HREF_NO_FILENAME`	If the "href" attribute of HtmlAnchor is defined but empty then IE interprets this as an empty filename.
`ANCHOR_SEND_PING_REQUEST`	Ignore target when `href` is a javascript snippet.
`CONNECTION_KEEP_ALIVE_IE`	Use Keep-Alive instead of keep-alive.
`CONTENT_SECURITY_POLICY_IGNORED`	Browser does not check the CSP.
`CSS_BACKGROUND_INITIAL`	Background image is 'initial'.
`CSS_BACKGROUND_RGBA`	Background image is 'rgba(0, 0, 0, 0)'.
`CSS_CSSTEXT_FF_STYLE`	`CSSFontFaceRule.cssText` uses one more blank.
`CSS_CSSTEXT_IE_STYLE`	`CSSFontFaceRule.cssText` uses `\n\t` to break lines.
`CSS_DIALOG_NONE`	Is display style of HtmlDialog is 'none'.
`CSS_DISPLAY_BLOCK`	Is display style 'block'.
`CSS_DISPLAY_BLOCK2`	Is display style 'block'.
`CSS_LENGTH_INITIAL`	'initial' is a valid length value.
`CSS_NOSCRIPT_DISPLAY_INLINE`	The default value of the display property for the 'noscript' tag is 'inline' instead of the default one.
`CSS_OUTLINE_WIDTH_UNIT_NOT_REQUIRED`	Unit is not required when setting outline-width style.
`CSS_PROGRESS_DISPLAY_INLINE`	The default value of the display property for the 'progress' tag is 'inline' instead of the default one.
`CSS_PSEUDO_SELECTOR_MS_PLACEHHOLDER`	Is the css pseudo selector -ms-input-placeholder supported.
`CSS_PSEUDO_SELECTOR_PLACEHOLDER_SHOWN`	Is the css pseudo selector placeholder-shown supported.
`CSS_RP_DISPLAY_NONE`	The default value of the display property for the 'rp' tag is 'none'.
`CSS_RT_DISPLAY_RUBY_TEXT_ALWAYS`	The default value of the display property for the 'rt' tag is always 'ruby-text'.
`CSS_SET_NULL_THROWS`	Throws exception on setting a CSS style value to null.
`CSS_STYLE_PROP_DISCONNECTED_IS_EMPTY`	For disconnected items style properties are blank.
`CSS_STYLE_PROP_FONT_DISCONNECTED_IS_EMPTY`	For disconnected items style font property is blank.
`CSS_VERTICAL_ALIGN_SUPPORTS_AUTO`	'auto' is supported when setting vertical-align style.
`CSS_ZINDEX_TYPE_INTEGER`	zIndex is of type Integer.
`DIALOGWINDOW_REFERER`	Add the 'Referer' header to a request triggered by window.showModalDialog.
`DOM_NORMALIZE_REMOVE_CHILDREN`	IE removes all child text nodes, but FF preserves the first.
`EVENT_BEFORE_UNLOAD_RETURN_VALUE_IS_HTML5_LIKE`	Indicates whether returnValue behaves HTML5-like with an empty string default.
`EVENT_CONTEXT_MENU_HAS_DETAIL_1`	The context menu MouseEvent has a detail of 1.
`EVENT_FOCUS_FOCUS_IN_BLUR_OUT`	Triggers the onfocus onfocusin blur onfocusout events in this order.
`EVENT_FOCUS_IN_FOCUS_OUT_BLUR`	Triggers the onfocusin onfocus onfocusout blur events in this order.
`EVENT_FOCUS_ON_LOAD`	Triggers the onfocus event when focusing the body on load.
`EVENT_HANDLER_NULL_RETURN_IS_MEANINGFUL`	Indicates whether returning 'null' from a property handler is meaningful.
`EVENT_MOUSE_ON_DISABLED`	Mouse events are triggered on disabled elements also.
`EVENT_ONANIMATION_DOCUMENT_CREATE_NOT_SUPPORTED`	`AnimationEvent` can not be created by calling document.createEvent('AnimationEvent').
`EVENT_ONCHANGE_AFTER_ONCLICK`	Triggers "onchange" event handler after "onclick" event handler.
`EVENT_ONCLICK_FOR_SELECT_ONLY`	Triggers "onclick" event handler for the select only, not for the clicked option.
`EVENT_ONCLICK_POINTEREVENT_DETAIL_0`	`PointerEvent`has detail of 0.
`EVENT_ONCLICK_USES_POINTEREVENT`	Triggers 'onclick' event handler using `PointerEvent`.
`EVENT_ONCLOSE_DOCUMENT_CREATE_NOT_SUPPORTED`	`CloseEvent` can not be created by calling document.createEvent('CloseEvent').
`EVENT_ONDOUBLECLICK_USES_POINTEREVENT`	Triggers 'ondblclick' event handler using `PointerEvent`.
`EVENT_ONLOAD_INTERNAL_JAVASCRIPT`	Triggers "onload" event if internal javascript loaded.
`EVENT_ONMESSAGE_DEFAULT_DATA_NULL`	MessageEvent default data value is null.
`EVENT_ONMOUSEDOWN_FOR_SELECT_OPTION_TRIGGERS_ADDITIONAL_DOWN_FOR_SELECT`	Does not trigger "onmousedown" event handler for the select options.
`EVENT_ONMOUSEDOWN_NOT_FOR_SELECT_OPTION`	Does not trigger "onmousedown" event handler for the select options.
`EVENT_ONMOUSEOVER_FOR_DISABLED_OPTION`	FF triggers a mouseover event even if the option is disabled.
`EVENT_ONMOUSEOVER_NEVER_FOR_SELECT_OPTION`	IE never triggers a mouseover event for select options.
`EVENT_ONMOUSEUP_FOR_SELECT_OPTION_TRIGGERS_ADDITIONAL_UP_FOR_SELECT`	Does not trigger "onmousedown" event handler for the select options.
`EVENT_ONMOUSEUP_NOT_FOR_SELECT_OPTION`	Does not trigger "onmouseup" event handler for the select options.
`EVENT_ONPOPSTATE_DOCUMENT_CREATE_NOT_SUPPORTED`	`PopStateEvent` can not be created by calling document.createEvent('PopStateEvent').
`EVENT_TYPE_BEFOREUNLOADEVENT`	Supports event type 'BeforeUnloadEvent'.
`EVENT_TYPE_HASHCHANGEEVENT`	Supports event type 'HashChangeEvent'.
`EVENT_TYPE_MOUSEWHEELEVENT`	Supports vendor specific event type 'MouseWheelEvent'.
`EVENT_TYPE_POINTEREVENT`	Supports event type 'PointerEvent'.
`EVENT_TYPE_PROGRESSEVENT`	Supports event type 'ProgressEvent'.
`EVENT_TYPE_TEXTEVENT`	Supports event type 'TextEvent'.
`EVENT_TYPE_WHEELEVENT`	Supports event type 'WheelEvent'.
`FOCUS_BODY_ELEMENT_AT_START`	For new pages the focus points to the body node.
`FORM_FORM_ATTRIBUTE_SUPPORTED`	Form elements are able to refer to the for by using the from attribute.
`FORM_IGNORE_REL_NOREFERRER`	Form elements are able to refer to the for by using the from attribute.
`FORM_PARAMETRS_NOT_SUPPORTED_FOR_IMAGE`	Form formxxx parameters not supported for input type image.
`FORM_SUBMISSION_DOWNLOWDS_ALSO_IF_ONLY_HASH_CHANGED`	Form submit forces a real request also if only the hash was changed.
`FORM_SUBMISSION_HEADER_CACHE_CONTROL_MAX_AGE`	Form submit includes the Cache-Control: max-age=0 header.
`FORM_SUBMISSION_HEADER_CACHE_CONTROL_NO_CACHE`	Form submit includes the Cache-Control: no-cache header.
`FORM_SUBMISSION_HEADER_ORIGIN`	Forms are ignoring the rel='noreferrer' attribute.
`FORM_SUBMISSION_URL_WITHOUT_HASH`	Form submit is done without the hash part of the action url.
`FORMFIELD_REACHABLE_BY_NEW_NAMES`	Indicates if a form field is directly reachable by its new name once this has been changed.
`FORMFIELD_REACHABLE_BY_ORIGINAL_NAME`	Indicates if a form field is directly reachable by its original name once this has been changed.
`FRAME_LOCATION_ABOUT_BLANK_FOR_ABOUT_SCHEME`	If the frame src has 'about:' scheme always use 'about:blank' as source.
`HTML_ATTRIBUTE_LOWER_CASE`	HTML attributes are always lower case.
`HTML_COLOR_EXPAND_ZERO`	Expand #0 to #000000.
`HTML_COLOR_RESTRICT`	Do not allow anything invalid in color, but restrict to valid values (names and hex digits) only.
`HTML_COLOR_TO_LOWER`	Convert the color (name and hex code) to lower case.
`HTML_COMMAND_TAG`	HTML parser supports the 'command' tag.
`HTML_ISINDEX_TAG`	HTML parser supports the 'isindex' tag.
`HTML_MAIN_TAG`	HTML parser supports the 'main' tag.
`HTML_OBJECT_CLASSID`	Supports <object> `classid` attribute.
`HTMLABBREVIATED`
`HTMLALLCOLLECTION_DO_NOT_CONVERT_STRINGS_TO_NUMBER`	HtmlAllCollection.item returns null instead of undefined if an element was not found.
`HTMLALLCOLLECTION_INTEGER_INDEX`	HtmlAllCollection.item(int) requires int parameter.
`HTMLALLCOLLECTION_NO_COLLECTION_FOR_MANY_HITS`	HtmlCollection returns the first hit instead of a collection if many elements found.
`HTMLALLCOLLECTION_NULL_IF_NAMED_ITEM_NOT_FOUND`	HtmlAllCollection.namedItem returns null instead of undefined if an element was not found.
`HTMLBASE_HREF_DEFAULT_EMPTY`	Base tag href attribute is empty if not defined.
`HTMLBASEFONT_END_TAG_FORBIDDEN`	Should org.htmlunit.javascript.host.html.HTMLBaseFontElement#isEndTagForbidden().
`HTMLBUTTON_SUBMIT_IGNORES_DISABLED_STATE`	If type submit/reset the form update is triggered even if disabled.
`HTMLBUTTON_WILL_VALIDATE_IGNORES_READONLY`	willValidate does not check the readonly property.
`HTMLCOLLECTION_ITEM_FUNCT_SUPPORTS_DOUBLE_INDEX_ALSO`	HtmlCollection.item() supports also doubles as index.
`HTMLCOLLECTION_ITEM_SUPPORTS_DOUBLE_INDEX_ALSO`	HtmlCollection.item[] supports also doubles as index.
`HTMLCOLLECTION_ITEM_SUPPORTS_ID_SEARCH_ALSO`	HtmlCollection.item searches by id also.
`HTMLCOLLECTION_NAMED_ITEM_ID_FIRST`	HtmlCollection.namedItem searches by id first.
`HTMLCOLLECTION_NULL_IF_NOT_FOUND`	HtmlCollection returns null instead of undefined if an element was not found.
`HTMLCOLLECTION_SUPPORTS_PARANTHESES`	HtmlAllCollection(int) is not supported.
`HTMLDOCUMENT_CHARSET_LOWERCASE`	Is `document.charset` lower-case.
`HTMLDOCUMENT_COLOR`	Do document.bgColor/.alinkColor/.vlinkColor/.linkColor have value by default.
`HTMLDOCUMENT_COOKIES_IGNORE_BLANK`	Calling cookies setter with blank string does not reset the cookies.
`HTMLDOCUMENT_ELEMENTS_BY_NAME_EMPTY`	/** `document.getElementsByName` returns an empty list if called with the empty string.
`HTMLDOCUMENT_FUNCTION_DETACHED`	We can use functions in detached documents.
`HTMLDOCUMENT_GET_ALSO_FRAMES`	Calls to `document.XYZ` also looks at frames.
`HTMLDOCUMENT_GET_FOR_ID_AND_OR_NAME`	Calls to `document.XYZ` looks at children with the specified ID and/or name.
`HTMLDOCUMENT_GET_PREFERS_STANDARD_FUNCTIONS`	Calls to `document.XYZ` should first look at standard functions before looking at elements named `XYZ`.
`HTMLELEMENT_ALIGN_INVALID`	Allows invalid 'align' values.
`HTMLELEMENT_DETACH_ACTIVE_TRIGGERS_NO_KEYUP_EVENT`	Detaching the active element from the dom tree triggers no keyup event.
`HTMLELEMENT_REMOVE_ACTIVE_TRIGGERS_BLUR_EVENT`	Removing the active element from the dom tree triggers the onblur event.
`HTMLIMAGE_BLANK_SRC_AS_EMPTY`	Handle blank source like empty.
`HTMLIMAGE_EMPTY_SRC_DISPLAY_FALSE`	Empty src attribute sets display to false.
`HTMLIMAGE_HTMLELEMENT`	Is document.cretaeElement('image') an HTMLElement.
`HTMLIMAGE_HTMLUNKNOWNELEMENT`	Is document.cretaeElement('image') an HTMLUnknownElement.
`HTMLIMAGE_INVISIBLE_NO_SRC`	Mark the image as invisible if no src attribute defined.
`HTMLIMAGE_NAME_VALUE_PARAMS`	Clicking an image input submits the value as param if defined.
`HTMLINPUT_ATTRIBUTE_MIN_MAX_LENGTH_SUPPORTED`	HTMLInputElement: minlength and maxlength attributes are supported.
`HTMLINPUT_CHECKBOX_DOES_NOT_CLICK_SURROUNDING_ANCHOR`	When clicking a `checkbox` or `radio` input the surrounding anchor is not clicked.
`HTMLINPUT_DOES_NOT_CLICK_SURROUNDING_ANCHOR`	When clicking an input the surrounding anchor is not clicked.
`HTMLINPUT_FILE_SELECTION_START_END_NULL`	HTMLInputElement: type `file` selectionSart/End are null.
`HTMLINPUT_FILES_UNDEFINED`	HTMLInputElement: `files` to be `undefined`.
`HTMLINPUT_TYPE_COLOR_NOT_SUPPORTED`	HTMLInputElement color type is not supported.
`HTMLINPUT_TYPE_DATETIME_LOCAL_SUPPORTED`	HTMLInputElement datetime-local type is supported.
`HTMLINPUT_TYPE_DATETIME_SUPPORTED`	HTMLInputElement date and time types are supported.
`HTMLINPUT_TYPE_IMAGE_IGNORES_CUSTOM_VALIDITY`	HTMLInputElement image type is not supported.
`HTMLINPUT_TYPE_MONTH_SUPPORTED`	HTMLInputElement month type is supported.
`HTMLINPUT_TYPE_WEEK_SUPPORTED`	HTMLInputElement week type is supported.
`HTMLKEYGEN_END_TAG_FORBIDDEN`	Should the HTMLElement of `keygen` have no end tag.
`HTMLLINK_CHECK_TYPE_FOR_STYLESHEET`	If the type is present for a link only use if type is text/css.
`HTMLOPTION_PREVENT_DISABLED`
`HTMLOPTION_REMOVE_SELECTED_ATTRIB_DESELECTS`	Removing the selected attribute, de selects the option.
`HTMLSCRIPT_TRIM_TYPE`	Trims the value of the type attribute before to verify it.
`HTMLSELECT_WILL_VALIDATE_ALWAYS_TRUE`	willValidate returns always true.
`HTMLSELECT_WILL_VALIDATE_IGNORES_READONLY`	willValidate does not check the readonly property.
`HTMLTEXTAREA_SET_DEFAULT_VALUE_UPDATES_VALUE`	Setting defaultValue updates the value also.
`HTMLTEXTAREA_USE_ALL_TEXT_CHILDREN`	When calculation the value of a text area ie uses a recursive approach.
`HTMLTEXTAREA_WILL_VALIDATE_IGNORES_READONLY`	willValidate does not check the readonly property.
`HTMLTRACK_END_TAG_FORBIDDEN`	Should org.htmlunit.javascript.host.html.HTMLTrackElement#isEndTagForbidden().
`HTTP_COOKIE_EXTENDED_DATE_PATTERNS_1`	Additionally support dates in format "d/M/yyyy".
`HTTP_COOKIE_EXTENDED_DATE_PATTERNS_2`	Dates format pattern 2.
`HTTP_COOKIE_EXTRACT_PATH_FROM_LOCATION`	Indicates that the path is extracted from the location.
`HTTP_COOKIE_REMOVE_DOT_FROM_ROOT_DOMAINS`	domain '.org' is handled as 'org'.
`HTTP_COOKIE_START_DATE_1970`	Indicates that the start date for two digits cookies is 1970 instead of 2000 (Two digits years are interpreted as 20xx if before 1970 and as 19xx otherwise).
`HTTP_HEADER_CH_UA`	Browser sends Sec-ch headers.
`HTTP_HEADER_SEC_FETCH`	Browser sends Sec-Fetch headers.
`HTTP_HEADER_UPGRADE_INSECURE_REQUEST`	Browser sends Upgrade-Insecure-Requests header.
`HTTP_REDIRECT_WITHOUT_HASH`	Redirection is done without the hash.
`JS_ALIGN_ACCEPTS_ARBITRARY_VALUES`	Setting the property align to arbitrary values is allowed.
`JS_ALIGN_FOR_INPUT_IGNORES_VALUES`	Setting the property align of an input element ignores the value if the value is one of center, justify, left or right.
`JS_ANCHOR_HOSTNAME_IGNORE_BLANK`	The anchor hostname setter ignores blank url's.
`JS_ANCHOR_PATHNAME_DETECT_WIN_DRIVES_URL`	The anchor pathname detects url's starting with one letter as file url's.
`JS_ANCHOR_PATHNAME_DETECT_WIN_DRIVES_URL_REPLACE`	The anchor pathname detects url's starting with one letter as file url's and replaces them with the file protocol.
`JS_ANCHOR_PATHNAME_NONE_FOR_BROKEN_URL`	The anchor pathname property returns nothing for broken http(s) url's.
`JS_ANCHOR_PATHNAME_PREFIX_WIN_DRIVES_URL`	The anchor pathname prefixes file url's with '/'.
`JS_ANCHOR_PROTOCOL_COLON_FOR_BROKEN_URL`	The anchor protocol property returns ':' for broken http(s) url's.
`JS_ANCHOR_PROTOCOL_COLON_UPPER_CASE_DRIVE_LETTERS`	The anchor protocol property converts drive letters to uppercase.
`JS_ANCHOR_PROTOCOL_HTTP_FOR_BROKEN_URL`	The anchor protocol property returns 'http' for broken http(s) url's.
`JS_ANCHOR_PROTOCOL_INVALID_THROWS`	The anchor protocol property setter throws an error if the protocol is not valid.
`JS_ANCHOR_REQUIRES_NAME_OR_ID`	Javascript property anchors includes all anchors with a name or an id property.
`JS_API_FETCH`	Javascript fetch api is supported.
`JS_AREA_WITHOUT_HREF_FOCUSABLE`	An area element without a href attribute is focusable.
`JS_ARGUMENTS_READ_ONLY_ACCESSED_FROM_FUNCTION`	Indicates that "someFunction.arguments" is a read-only view of the function's argument.
`JS_ARRAY_FROM`	Indicates that Array.from() is supported.
`JS_ATTR_FIRST_LAST_CHILD_RETURNS_NULL`	firstChild and lastChild returns null for Attr (like IE does).
`JS_AUDIO_PROCESSING_EVENT_CTOR`	AudioProcessingEvent ctor is callable.
`JS_BGSOUND_AS_UNKNOWN`	HTMLBGSoundElement reported as HTMLUnknownElement.
`JS_BLOB_CONTENT_TYPE_CASE_SENSITIVE`	Whether `Blob` stores the content type case sensitive.
`JS_BLOB_EVENT_REQUIRES_DATA`	BlobEvent ctor requires a data value.
`JS_BODY_MARGINS_8`	Body `margin` is 8px.
`JS_BOUNDINGCLIENTRECT_THROWS_IF_DISCONNECTED`	HtmlElement.getBoundingClientRect throws an error if the element is not attached to the page.
`JS_CANVAS_DATA_URL_CHROME_PNG`	toDataURL for canvas returns the CHROME version of the PNG.
`JS_CANVAS_DATA_URL_IE_PNG`	toDataURL for canvas returns the IE version of the PNG.
`JS_CLEAR_RESTRICT`	Do not allow invalid clear values.
`JS_CLIENTHEIGHT_INPUT_17`	ClientHeight for input is 17.
`JS_CLIENTHEIGHT_INPUT_18`	ClientHeight for input is 18.
`JS_CLIENTHEIGHT_RADIO_CHECKBOX_10`	ClientHeight for radio button and checkbox is 10.
`JS_CLIENTRECTLIST_THROWS_IF_ITEM_NOT_FOUND`	ClientRectList.item throws instead of returning null if an element was not found.
`JS_CLIENTWIDTH_INPUT_TEXT_143`	ClientWidth for text/password input is 143.
`JS_CLIENTWIDTH_INPUT_TEXT_173`	ClientWidth for text/password input is 173.
`JS_CLIENTWIDTH_RADIO_CHECKBOX_10`	ClientWidth for radio button and checkbox is 10.
`JS_CONSOLE_TIMESTAMP`	Console has timeStamp() method.
`JS_CSSRULELIST_ENUM_ITEM_LENGTH`	item is enumerated before length property of CSSRuleList.
`JS_DATE_LOCALE_DATE_SHORT`	`Date.toLocaleDateString()` returns a short form (d.M.yyyy).
`JS_DATE_WITH_LEFT_TO_RIGHT_MARK`	`DateTimeFormat` uses the Unicode Character `'LEFT-TO-RIGHT MARK'`.
`JS_DOCTYPE_ENTITIES_NULL`	Javascript doctyp.entities returns null (FF10).
`JS_DOCTYPE_NOTATIONS_NULL`	Javascript doctyp.notations returns null (FF10).
`JS_DOCUMENT_CREATE_ATTRUBUTE_LOWER_CASE`	Indicates that document.createAttribute converts the local name to lowercase.
`JS_DOCUMENT_DESIGN_MODE_INHERIT`	The browser supports the design mode 'Inherit'.
`JS_DOCUMENT_EVALUATE_RECREATES_RESULT`	Javascript document.evaluate creates a new result object even if provided as param.
`JS_DOCUMENT_FORMS_FUNCTION_SUPPORTED`	Javascript document.forms(...) supported.
`JS_DOCUMENT_SELECTION_RANGE_COUNT`	The browser has selection `rangeCount`.
`JS_DOCUMENT_SETTING_DOMAIN_THROWS_FOR_ABOUT_BLANK`	Javascript property document.domain doesn't allow setting domain of `about:blank`.
`JS_DOM_CDATA_DELETE_THROWS_NEGATIVE_COUNT`	Javascript property function `delete` throws an exception if the given count is negative.
`JS_DOMIMPLEMENTATION_CREATE_HTMLDOCOMENT_REQUIRES_TITLE`	createHTMLDucument requires a title.
`JS_DOMIMPLEMENTATION_FEATURE_CORE_3`	If document.implementation.hasFeature() supports 'Core 1.0'.
`JS_DOMIMPLEMENTATION_FEATURE_CSS_1`	If document.implementation.hasFeature() supports 'CSS 1.0'.
`JS_DOMIMPLEMENTATION_FEATURE_CSS_2`	If document.implementation.hasFeature() supports 'CSS 2.0'.
`JS_DOMIMPLEMENTATION_FEATURE_CSS_3`	If document.implementation.hasFeature() supports 'CSS 3.0'.
`JS_DOMIMPLEMENTATION_FEATURE_CSS2_1`	If document.implementation.hasFeature() supports 'CSS2 1.0'.
`JS_DOMIMPLEMENTATION_FEATURE_CSS2_3`	If document.implementation.hasFeature() supports 'CSS2 3.0'.
`JS_DOMIMPLEMENTATION_FEATURE_CSS3_1`	If document.implementation.hasFeature() supports 'CSS3 1.0'.
`JS_DOMIMPLEMENTATION_FEATURE_CSS3_2`	If document.implementation.hasFeature() supports 'CSS3 2.0'.
`JS_DOMIMPLEMENTATION_FEATURE_CSS3_3`	If document.implementation.hasFeature() supports 'CSS3 3.0'.
`JS_DOMIMPLEMENTATION_FEATURE_EVENTS_1`	If document.implementation.hasFeature() supports 'Events 1.0'.
`JS_DOMIMPLEMENTATION_FEATURE_KEYBOARDEVENTS`	If document.implementation.hasFeature() supports 'KeyboardEvents'.
`JS_DOMIMPLEMENTATION_FEATURE_LS`	If document.implementation.hasFeature() supports 'LS'.
`JS_DOMIMPLEMENTATION_FEATURE_MUTATIONNAMEEVENTS`	If document.implementation.hasFeature() supports 'MutationNameEvents'.
`JS_DOMIMPLEMENTATION_FEATURE_RANGE_1`	If document.implementation.hasFeature() supports 'Range 1.0'.
`JS_DOMIMPLEMENTATION_FEATURE_RANGE_3`	If document.implementation.hasFeature() supports 'Range 3.0'.
`JS_DOMIMPLEMENTATION_FEATURE_STYLESHEETS`	If document.implementation.hasFeature() supports 'StyleSheets 2.0'.
`JS_DOMIMPLEMENTATION_FEATURE_SVG_BASICSTRUCTURE_1_2`	If document.implementation.hasFeature() supports 'http://www.w3.org/TR/SVG11/feature#BasicStructure 1.2'.
`JS_DOMIMPLEMENTATION_FEATURE_TEXTEVENTS`	If document.implementation.hasFeature() supports 'TextEvents'.
`JS_DOMIMPLEMENTATION_FEATURE_UIEVENTS_2`	If document.implementation.hasFeature() supports 'UIEvents 2.0'.
`JS_DOMIMPLEMENTATION_FEATURE_VALIDATION`	If document.implementation.hasFeature() supports 'Validation'.
`JS_DOMIMPLEMENTATION_FEATURE_VIEWS_1`	If document.implementation.hasFeature() supports 'Views 1.0'.
`JS_DOMIMPLEMENTATION_FEATURE_VIEWS_3`	If document.implementation.hasFeature() supports 'Views 3.0'.
`JS_DOMIMPLEMENTATION_FEATURE_XPATH`	If document.implementation.hasFeature() supports 'XPath 3.0'.
`JS_DOMPARSER_EMPTY_STRING_IS_ERROR`	`DOMParser.parseFromString(..)` handles an empty String as error.
`JS_DOMPARSER_EXCEPTION_ON_ERROR`	`DOMParser.parseFromString(..)` throws an exception if an error occurs.
`JS_DOMPARSER_PARSERERROR_ON_ERROR`	`DOMParser.parseFromString(..)` creates a document containing a `parsererror` element.
`JS_DOMTOKENLIST_CONTAINS_RETURNS_FALSE_FOR_BLANK`	DOMTokenList returns false instead of throwing an exception when receiver is blank.
`JS_DOMTOKENLIST_ENHANCED_WHITESPACE_CHARS`	DOMTokenList uses an enhanced set of whitespace chars.
`JS_DOMTOKENLIST_GET_NULL_IF_OUTSIDE`	DOMTokenList index access returns null if index is outside.
`JS_DOMTOKENLIST_LENGTH_IGNORES_DUPLICATES`	DOMTokenList ignores duplicates when determining the length.
`JS_DOMTOKENLIST_REMOVE_WHITESPACE_CHARS_ON_ADD`	DOMTokenList removed all whitespace chars during add.
`JS_DOMTOKENLIST_REMOVE_WHITESPACE_CHARS_ON_REMOVE`	DOMTokenList removed all whitespace chars during remove.
`JS_ELEMENT_GET_ATTRIBUTE_RETURNS_EMPTY`	Indicates that attributeNS returns an empty string instead of null if not found.
`JS_ERROR_CAPTURE_STACK_TRACE`	Javascript `Error.captureStackTrace`.
`JS_ERROR_STACK_TRACE_LIMIT`	Javascript `Error.stackTraceLimit`.
`JS_EVENT_INPUT_CTOR_INPUTTYPE`	Javascript InputEvent reads the inputType property from data.
`JS_EVENT_KEYBOARD_CTOR_WHICH`	Javascript KeyboardEvent reads the which property from data.
`JS_EVENT_LOAD_SUPPRESSED_BY_CONTENT_SECURIRY_POLICY`	do not trigger the onload event if the frame content was not shown because of the csp.
`JS_FILEREADER_CONTENT_TYPE`	Whether `FileReader` includes content type or not.
`JS_FILEREADER_EMPTY_NULL`	Whether `FileReader` includes `base64` for empty content or not.
`JS_FORM_ACTION_EXPANDURL_NOT_DEFINED`	Indicates that the action property will not be expanded if defined as empty string.
`JS_FORM_DATA_CONTENT_TYPE_PLAIN_IF_FILE_TYPE_UNKNOWN`	use content-type text/plain if the file type is unknown'.
`JS_FORM_DISPATCHEVENT_SUBMITS`	form.dispatchEvent(e) submits the form if the event is of type 'submit'.
`JS_FORM_REJECT_INVALID_ENCODING`	Setting form.encoding only allowed for valid encodings.
`JS_FORM_SUBMIT_FORCES_DOWNLOAD`	Calling form.submit() twice forces double download.
`JS_FORM_USABLE_AS_FUNCTION`	Support for document.formName('inputName').
`JS_FRAME_CONTENT_DOCUMENT_ACCESS_DENIED_THROWS`	contentDocument throws if the frame document access is denied.
`JS_GLOBAL_THIS`	Supports globalThis.
`JS_GROUPINGRULE_INSERTRULE_INDEX_OPTIONAL`	The index parameter of `CSSGroupingRule.insertRule(String, Object)` is optional.
`JS_HTML_HYPHEN_ELEMENT_CLASS_NAME`	HTMLElement instead of HTMLUnknownElement for elements with hyphen ('-').
`JS_HTML_OBJECT_VALIDITYSTATE_ISVALID_IGNORES_CUSTOM_ERROR`	HTMLObject Validity isValid ignores custom error property.
`JS_HTML_RUBY_ELEMENT_CLASS_NAME`	HTMLElement instead of HTMLUnknownElement for ruby elements.
`JS_IFRAME_ALWAYS_EXECUTE_ONLOAD`	Executes the `onload` handler, regardless of the whether the element was already attached to the page.
`JS_IGNORES_LAST_LINE_CONTAINING_UNCOMMENTED`	Ignore the last line containing uncommented.
`JS_IGNORES_UTF8_BOM_SOMETIMES`	Ignore the UTF8 BOM header when loading external js in some situations.
`JS_IMAGE_COMPLETE_RETURNS_TRUE_FOR_NO_REQUEST`	The complete property returns also true, if the image download was failing or if there was no src at all.
`JS_IMAGE_WIDTH_HEIGHT_EMPTY_SOURCE_RETURNS_0x0`	Getting the width and height of an image tag with an empty source returns 0x0.
`JS_IMAGE_WIDTH_HEIGHT_RETURNS_16x16_0x0`	Getting the width and height of an image tag without a source returns 16x16; for invalid values returns 0.
`JS_IMAGE_WIDTH_HEIGHT_RETURNS_24x24_0x0`	Getting the width and height of an image tag without a source returns 24x24; for invalid values returns 0x0.
`JS_IMAGE_WIDTH_HEIGHT_RETURNS_28x30_28x30`	Getting the width and height of an image tag without a source returns 28x30; for invalid values returns same.
`JS_INNER_HTML_ADD_CHILD_FOR_NULL_VALUE`	Indicates that innerHTML adds the child also for null values.
`JS_INNER_HTML_LF`	Indicates that innerHTML uses `lf` instead of `lf`.
`JS_INNER_TEXT_SCRIPT`	Indicates that innerText adds script content also.
`JS_INNER_TEXT_SVG_NL`	Indicates that innerText add a nl when reaching svg element.
`JS_INNER_TEXT_SVG_TITLE`	Indicates that innerText add svg title content also.
`JS_INNER_TEXT_VALUE_NULL`	Indicates that innerText setter supports null values.
`JS_INPUT_CHANGE_TYPE_DROPS_VALUE`	The value is ignored when the type of an input is changed.
`JS_INPUT_CHANGE_TYPE_DROPS_VALUE_WEEK_MONTH`	The value is ignored when the type of an week/month input is changed.
`JS_INPUT_IGNORE_NEGATIVE_SELECTION_START`	Ignore negative selection starts.
`JS_INPUT_NUMBER_ACCEPT_ALL`	FF accepts all chars.
`JS_INPUT_NUMBER_DOT_AT_END_IS_DOUBLE`	FF comma at end is not an integer.
`JS_INPUT_NUMBER_SELECTION_START_END_NULL`	Chrome/FF returns null for selectionStart/selectionEnd.
`JS_INPUT_SET_TYPE_LOWERCASE`	Setting the type property of an input converts the type to lowercase.
`JS_INPUT_SET_UNSUPORTED_TYPE_EXCEPTION`	Setting of unsupported type value throw exception.
`JS_INPUT_SET_VALUE_DATE_SUPPORTED`	Setting the value of an Input Date will check for correct format.
`JS_INPUT_SET_VALUE_EMAIL_TRIMMED`	Setting the value of an Input Email to blank will result in an empty value.
`JS_INPUT_SET_VALUE_MOVE_SELECTION_TO_START`	Setting the value of an Input Text/Password/TextArea resets the selection.
`JS_INPUT_URL_VALUE_TRIMMED`	Setting the value of an Input URL to blank will result in an empty value.
`JS_INTL_NAMED_OBJECT`	Intl is named Object.
`JS_INTL_V8_BREAK_ITERATOR`	Indicates that Intl.v8BreakIterator is supported.
`JS_IS_SEARCH_PROVIDER_INSTALLED_ZERO`	Indicates that isSearchProviderInstalled returns zero instead of undefined.
`JS_LABEL_FORM_OF_SELF`	The property form of a label returns the form the label is assigned to.
`JS_LOCATION_HASH_HASH_IS_ENCODED`	location.hash returns an encoded hash.
`JS_LOCATION_HASH_IS_DECODED`	Set this property if the browser evaluates window.location.hash to #ü (like Firefox) for url 'http://localhost/something/#%C3%BC'. IE evaluates to #%C3%BC.
`JS_LOCATION_HASH_RETURNS_HASH_FOR_EMPTY_DEFINED`	Property location.hash returns '#' for urls ending with a hash sign (e.g. http://localhost/something/#).
`JS_LOCATION_HREF_HASH_IS_ENCODED`	Set this property if the browser evaluates window.location.hash to #%C3%BC; (like Firefox) for url 'http://localhost/something/#ü'. IE evaluates to #ü.
`JS_LOCATION_RELOAD_REFERRER`	Reload sends a referrer header.
`JS_MEDIA_LIST_ALL`	Indicates that an empty media list is represented by the string 'all'.
`JS_MEDIA_LIST_EMPTY_STRING`	Indicates that an empty media list is represented by the string ''.
`JS_MENU_TYPE_EMPTY`	Type property of menu has always '' as value.
`JS_MENU_TYPE_PASS`	Type property of menu returns the current (maybe invalid) value.
`JS_NATIVE_FUNCTION_TOSTRING_COMPACT`	Indicates if the String representation of a native function is without newline.
`JS_NATIVE_FUNCTION_TOSTRING_NEW_LINE`	Indicates if the String representation of a native function begins and ends with a `\n`.
`JS_NATIVE_FUNCTION_TOSTRING_NL`	Indicates if the String representation of a native function has a newline for empty parameter list.
`JS_NAVIGATOR_DO_NOT_TRACK_UNSPECIFIED`	Navigator.doNotTrack returns unspecified if not set.
`JS_NODE_CONTAINS_RETURNS_FALSE_FOR_INVALID_ARG`	`Node.contains` returns false instead of throwing an exception.
`JS_NODE_INSERT_BEFORE_REF_OPTIONAL`	The reference argument of `Node.insertBefore(..)` is optional.
`JS_OBJECT_ASSIGN`	Indicates that Object.assign() is supported.
`JS_OBJECT_GET_OWN_PROPERTY_SYMBOLS`	Indicates that Object.getOwnPropertySymbols() is supported.
`JS_OFFSET_PARENT_NULL_IF_FIXED`	Indicates that someObj.offsetParent returns null, it someObj has fixed style.
`JS_OUTER_HTML_NULL_AS_STRING`	element.outerHTML handles null value as string "null".
`JS_OUTER_HTML_REMOVES_CHILDREN_FOR_DETACHED`	element.outerHTML removes all children from detached node.
`JS_OUTER_HTML_THROWS_FOR_DETACHED`	element.outerHTML removes all children from detached node.
`JS_PAGERULE_SELECTORTEXT_EMPTY`	Indicates that CSSPageRule.selectorText always returns an empty string.
`JS_PHRASE_COMMON_CLASS_NAME`	Indicates that HTMLPhraseElements returning 'HTMLElement' as class name.
`JS_POP_STATE_EVENT_CLONE_STATE`	Indicates that the `PopStateEvent`.`state` is cloned.
`JS_PRE_WIDTH_STRING`	Indicates that the `pre.width` is string.
`JS_PROMISE`	Supports Promise.
`JS_PROPERTY_DESCRIPTOR_NAME`	Indicates that the `Object.getOwnPropertyDescriptor.get` contains name.
`JS_PROPERTY_DESCRIPTOR_NEW_LINE`	Indicates that the `Object.getOwnPropertyDescriptor.get` starts with a new line.
`JS_REFLECT`	Support `Reflect`.
`JS_REGEXP_EMPTY_LASTPAREN_IF_TOO_MANY_GROUPS`	`RegExp.lastParen` returns an empty string if the RegExp has too many groups.
`JS_REGEXP_GROUP0_RETURNS_WHOLE_MATCH`	RegExp group `$0` returns the whole previous match (see `Matcher.group()`).
`JS_SCRIPT_HANDLE_204_AS_ERROR`	Javascript script tags handles a 204 (no content) response for the src attrib as error.
`JS_SCRIPT_SUPPORTS_FOR_AND_EVENT_WINDOW`	Javascript script tags supports the 'for' and the 'event' attribute.
`JS_SELECT_FILE_THROWS`	Indicates that setting the value to null has no effect.
`JS_SELECT_OPTIONS_HAS_SELECT_CLASS_NAME`	Indicates that select.options has a wong class name.
`JS_SELECT_OPTIONS_IGNORE_NEGATIVE_LENGTH`	Ignore negative value when setting the length.
`JS_SELECT_OPTIONS_IN_ALWAYS_TRUE`	The 'in' operator returns always true for HtmlOptionsCollection.
`JS_SELECT_OPTIONS_NULL_FOR_OUTSIDE`	Indicates that select.options returns null if requested index is outside.
`JS_SELECT_OPTIONS_REMOVE_IGNORE_IF_INDEX_NEGATIVE`	Indicates that select.options.remove ignores the call if index is too large.
`JS_SELECT_OPTIONS_REMOVE_THROWS_IF_NEGATIV`	Indicates that select.options[i] throws an exception if the requested index is negative.
`JS_SELECT_REMOVE_IGNORE_IF_INDEX_OUTSIDE`	Indicates that select.options.remove ignores the call if index is too large.
`JS_SELECT_SET_VALUES_CHECKS_ONLY_VALUE_ATTRIBUTE`	Indicates that select.value = 'val' only checks the value attribute and not the option text.
`JS_SELECTOR_TEXT_LOWERCASE`	Javascript selectorText property returns selectors in lower case.
`JS_STORAGE_GET_FROM_ITEMS`	Whether to get any property from the items first.
`JS_STORAGE_PRESERVED_INCLUDED`	Whether to add to the storage even preserved words.
`JS_STRING_INCLUDES`	Indicates that string.includes() is supported.
`JS_STRING_REPEAT`	Indicates that string.startsWith() and .endWith() are supported.
`JS_STRING_STARTS_ENDS_WITH`	Indicates that string.startsWith() and .endWith() are supported.
`JS_STRING_TRIM_LEFT_RIGHT`	Indicates that string.trimLeft() and .trimRight() are supported.
`JS_STYLE_UNSUPPORTED_PROPERTY_GETTER`	IE supports accessing unsupported style elements via getter like val = elem.style.htmlunit;.
`JS_STYLE_WORD_SPACING_ACCEPTS_PERCENT`	Indicates wordSpacing support percent values.
`JS_STYLE_WRONG_INDEX_RETURNS_UNDEFINED`	Indicates that trying to access the style property with a wrong index returns undefined instead of "".
`JS_STYLESHEETLIST_ACTIVE_ONLY`	Stylesheet list contains only active style sheets.
`JS_SYMBOL`	Supports Symbol.
`JS_TABLE_CELL_HEIGHT_DOES_NOT_RETURN_NEGATIVE_VALUES`	The width cell height does not return negative values.
`JS_TABLE_CELL_OFFSET_INCLUDES_BORDER`	The width cell offset calculation takes border into account.
`JS_TABLE_CELL_WIDTH_DOES_NOT_RETURN_NEGATIVE_VALUES`	The width cell property does not return negative values.
`JS_TABLE_COLUMN_WIDTH_NO_NEGATIVE_VALUES`	The width column property does not return negative values.
`JS_TABLE_COLUMN_WIDTH_NULL_STRING`	The width column property has a value of 'null' for null.
`JS_TABLE_ROW_DELETE_CELL_REQUIRES_INDEX`	Calling deleteCell without an index throws an exception.
`JS_TABLE_SPAN_SET_ZERO_IF_INVALID`	Set span zo zero if provided value is invalid.
`JS_TABLE_SPAN_THROWS_EXCEPTION_IF_INVALID`	Throws an exception if the value for column span is less than one.
`JS_TABLE_VALIGN_SUPPORTS_IE_VALUES`	Indicates that table elements supports the values "top", "bottom", "middle", "baseline".
`JS_TEXT_AREA_GET_MAXLENGTH_MAX_INT`	Getting the property maxLength if it is not defined in the DOM returns MAX_INT.
`JS_TEXT_AREA_SET_COLS_NEGATIVE_THROWS_EXCEPTION`	Setting the property cols throws an exception, if the provided value is less than 0.
`JS_TEXT_AREA_SET_COLS_THROWS_EXCEPTION`	Setting the property cols throws an exception, if the provided value is not convertible into an integer.
`JS_TEXT_AREA_SET_MAXLENGTH_NEGATIVE_THROWS_EXCEPTION`	Setting the property `maxLength` throws an exception, if the provided value is less than 0.
`JS_TEXT_AREA_SET_ROWS_NEGATIVE_THROWS_EXCEPTION`	Setting the property `rows` throws an exception, if the provided value is less than 0.
`JS_TEXT_AREA_SET_ROWS_THROWS_EXCEPTION`	Setting the property rows throws an exception, if the provided value is not convertible into an integer.
`JS_TEXT_AREA_SET_VALUE_NULL`	Setting the value processes null as null value.
`JS_TREEWALKER_EXPAND_ENTITY_REFERENCES_FALSE`	Indicates that `TreeWalker.expandEntityReferences` is always `false`.
`JS_TREEWALKER_FILTER_FUNCTION_ONLY`	Indicates that the filter to be used by the TreeWalker has to be a function (so no object with a method `acceptNode(..)` is supported).
`JS_TYPE_ACCEPTS_ARBITRARY_VALUES`	Setting the property align to arbitrary values is allowed.
`JS_VALIGN_CONVERTS_TO_LOWERCASE`	Setting the property valign converts to lowercase.
`JS_WEAK_SET`	Indicates that WeakSet is supported.
`JS_WIDTH_HEIGHT_ACCEPTS_ARBITRARY_VALUES`	Setting the property width/height to arbitrary values is allowed.
`JS_WINDOW_ACTIVEXOBJECT_HIDDEN`	The window.ActiveXObject is special in IE http://msdn.microsoft.com/en-us/library/ie/dn423948%28v=vs.85%29.aspx.
`JS_WINDOW_CHANGE_OPENER_ONLY_WINDOW_OBJECT`	Changing the opener of a window to something not null and not a window is not valid.
`JS_WINDOW_COMPUTED_STYLE_PSEUDO_ACCEPT_WITHOUT_COLON`	window.getComputedStyle works with pseudo selectors without colon in front.
`JS_WINDOW_FORMFIELDS_ACCESSIBLE_BY_NAME`	`window.name` returns also form fields (e.g. input, textarea).
`JS_WINDOW_FRAME_BY_ID_RETURNS_WINDOW`	`window..frames['id']` returns the frame window instead of the frame element.
`JS_WINDOW_FRAMES_ACCESSIBLE_BY_ID`	Support for accessing the frame of a window by id additionally to using the name.
`JS_WINDOW_INSTALL_TRIGGER_NULL`	Javascript InstallTrigger property set to null.
`JS_WINDOW_OUTER_INNER_HEIGHT_DIFF_131`	Difference of window.outer/inner height is 131.
`JS_WINDOW_OUTER_INNER_HEIGHT_DIFF_138`	Difference of window.outer/inner height is 138.
`JS_WINDOW_OUTER_INNER_HEIGHT_DIFF_86`	Difference of window.outer/inner height is 86.
`JS_WINDOW_OUTER_INNER_HEIGHT_DIFF_91`	Difference of window.outer/inner height is 91.
`JS_WINDOW_SELECTION_NULL_IF_INVISIBLE`	Window.getSelection returns null, if the window is not visible.
`JS_WINDOW_TOP_WRITABLE`	Window.top property is writable.
`JS_WORKER_IMPORT_SCRIPTS_ACCEPTS_ALL`	Method importScripts does not check the content type for js.
`JS_XML`	Supports XML.
`JS_XML_GET_ELEMENT_BY_ID__ANY_ELEMENT`	XMLDocument: .getElementById() to return any element, not HTML specifically.
`JS_XML_GET_ELEMENTS_BY_TAG_NAME_LOCAL`	XMLDocument: .getElementsByTagName() to search the nodes by their local name.
`JS_XML_SERIALIZER_BLANK_BEFORE_SELF_CLOSING`	Indicates that new XMLSerializer().serializeToString(..) inserts a blank before self-closing a tag.
`JS_XML_SERIALIZER_HTML_DOCUMENT_FRAGMENT_ALWAYS_EMPTY`	Indicates that new XMLSerializer().serializeToString(..) called with a document fragment created by an HTMLPage always returns ''.
`JS_XML_SERIALIZER_ROOT_CDATA_AS_ESCAPED_TEXT`	Indicates that `XMLSerializer.serializeToString(..)` serializes a single CDataSection as escaped text instead of `<!`
`JS_XML_SUPPORT_VIA_ACTIVEXOBJECT`	Indicates that the browser uses the ActiveXObject for implementing XML support.
`JS_XSLT_TRANSFORM_INDENT`	`XSLTProcessor.transformToDocument` supports output indent attribute.
`KEYBOARD_EVENT_SPECIAL_KEYPRESS`	With special keys [in .type(int)], should we trigger onkeypress event or not.
`KEYGEN_AS_BLOCK`	Handle `<keygen>` as `<block>`.
`META_X_UA_COMPATIBLE`	Indicates that the browser considers the meta X-UA-Compatible when determining compatibility/quirks mode.
`MULTICOL_BLOCK`	The default display style of multicol is 'block'.
`PAGE_SELECTION_RANGE_FROM_SELECTABLE_TEXT_INPUT`
`QUERYSELECTOR_CSS3_PSEUDO_REQUIRE_ATTACHED_NODE`	IE throws a syntax error if a css3 pseudo selector is used on a detached node.
`QUERYSELECTORALL_NOT_IN_QUIRKS`	Indicates `.querySelectorAll()` and `.querySelector()` is not supported in quirks mode.
`RESETINPUT_DEFAULT_VALUE_IF_VALUE_NOT_DEFINED`	Set the value attribute of a reset input to 'Reset' if no value attribute specified.
`SLOT_CONTENTS`	The default display style of slot is 'content'.
`STYLESHEET_ADD_RULE_RETURNS_POS`	Method addRule returns the rule position instead of -1.
`STYLESHEET_HREF_EMPTY_IS_NULL`	Indicates that the href property for a <link rel="stylesheet" type="text/css" href="" /> (href empty) is null.
`SUBMITINPUT_DEFAULT_VALUE_IF_VALUE_NOT_DEFINED`	Set the value attribute of a submit input to 'Submit Query' if no value attribute specified.
`SVG_UNKNOWN_ARE_DOM`	Indicates that unknown tags inside an SVG element are handled as DOM elements, not SVG elements.
`URL_ABOUT_BLANK_HAS_BLANK_PATH`	Indicates, that the pathname for the url 'blank' is empty; instead of 'blank'.
`URL_AUTH_CREDENTIALS`	Indicates, that the browser supports username and password as part of the url (e.g. http://john.smith:secret@localhost).
`URL_IGNORE_SPECIAL`	The protocol setter does not check for special protocols.
`URL_MINIMAL_QUERY_ENCODING`	Replace only ' ' with %20 when encode the query part of an url.
`URL_MISSING_SLASHES`	Handles missing slashes.
`WEBSOCKET_ORIGIN_SET`	Set the origin property for web socket events.
`WINDOW_EXECUTE_EVENTS`	Execute window events.
`XHR_ALL_RESPONSE_HEADERS_APPEND_SEPARATOR`	XMLHttpRequest.getAllResponseHeaders() has a trailing separator.
`XHR_ALL_RESPONSE_HEADERS_SEPARATE_BY_LF`	XMLHttpRequest.getAllResponseHeaders() uses only Lf as separator.
`XHR_FIRE_STATE_OPENED_AGAIN_IN_ASYNC_MODE`	XMLHttpRequest triggers the opened event at the beginning of the send method again.
`XHR_HANDLE_SYNC_NETWORK_ERRORS`	Indicates that the Browser handles async and sync network errors the same way.
`XHR_LENGTH_COMPUTABLE`	ProgressEvent.lengthComputable is true.
`XHR_LOAD_ALWAYS_AFTER_DONE`	XMLHttpRequest triggers the load events also if the abort was signaled.
`XHR_LOAD_START_ASYNC`	XMLHttpRequest triggers the load start event async.
`XHR_NO_CROSS_ORIGIN_TO_ABOUT`	A cross origin request to `about:blank` is not allowed.
`XHR_OPEN_ALLOW_EMTPY_URL`	Indicates if an empty url is allowed as url param for the open method.
`XHR_PROGRESS_ON_NETWORK_ERROR_ASYNC`	XMLHttpRequest triggers an additional progress event if a network error was thrown in async mode.
`XHR_RESPONSE_TEXT_EMPTY_UNSENT`	If state unsent the response text is empty even if the response type is wrong.
`XHR_RESPONSE_TYPE_THROWS_UNSENT`	Setting the responseType throws in state unsent.
`XHR_SEND_IGNORES_BLOB_MIMETYPE_AS_CONTENTTYPE`	Indicates if the XMLHttpRequest.send() method will send the mimeType of the blob as Content-Type header.
`XHR_SEND_NETWORK_ERROR_IF_ABORTED`	Indicates if the XMLHttpRequest.send() method will throw if aborted.
`XHR_USE_CONTENT_CHARSET`	Indicates that the content charset is used for response parsing.
`XPATH_SELECTION_NAMESPACES`	Indicates that the 'SelectionNamespaces' property is supported by XPath expressions.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static BrowserVersionFeatures`	`valueOf(java.lang.String name)`	Returns the enum constant of this type with the specified name.
`static BrowserVersionFeatures[]`	`values()`	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

- Enum Constant Detail
  - ANCHOR_EMPTY_HREF_NO_FILENAME
```
public static final BrowserVersionFeatures ANCHOR_EMPTY_HREF_NO_FILENAME
```
    If the "href" attribute of HtmlAnchor is defined but empty then IE interprets this as an empty filename. Example: The page https://www.htmlunit.org/test/myFile.html contains an anchor with an empty href attribute. Clicking the link in IE force the load of page https://www.htmlunit.org/test/. In Firefox the URL is unchanged.
  - ANCHOR_SEND_PING_REQUEST
```
public static final BrowserVersionFeatures ANCHOR_SEND_PING_REQUEST
```
    Ignore target when href is a javascript snippet.
  - CONNECTION_KEEP_ALIVE_IE
```
public static final BrowserVersionFeatures CONNECTION_KEEP_ALIVE_IE
```
    Use Keep-Alive instead of keep-alive.
  - CONTENT_SECURITY_POLICY_IGNORED
```
public static final BrowserVersionFeatures CONTENT_SECURITY_POLICY_IGNORED
```
    Browser does not check the CSP.
  - CSS_BACKGROUND_INITIAL
```
public static final BrowserVersionFeatures CSS_BACKGROUND_INITIAL
```
    Background image is 'initial'.
  - CSS_BACKGROUND_RGBA
```
public static final BrowserVersionFeatures CSS_BACKGROUND_RGBA
```
    Background image is 'rgba(0, 0, 0, 0)'.
  - CSS_CSSTEXT_FF_STYLE
```
public static final BrowserVersionFeatures CSS_CSSTEXT_FF_STYLE
```
    CSSFontFaceRule.cssText uses one more blank.
  - CSS_CSSTEXT_IE_STYLE
```
public static final BrowserVersionFeatures CSS_CSSTEXT_IE_STYLE
```
    CSSFontFaceRule.cssText uses \n\t to break lines.
  - CSS_DIALOG_NONE
```
public static final BrowserVersionFeatures CSS_DIALOG_NONE
```
    Is display style of HtmlDialog is 'none'.
  - CSS_DISPLAY_BLOCK
```
public static final BrowserVersionFeatures CSS_DISPLAY_BLOCK
```
    Is display style 'block'.
  - CSS_DISPLAY_BLOCK2
```
public static final BrowserVersionFeatures CSS_DISPLAY_BLOCK2
```
    Is display style 'block'.
  - CSS_LENGTH_INITIAL
```
public static final BrowserVersionFeatures CSS_LENGTH_INITIAL
```
    'initial' is a valid length value.
  - CSS_NOSCRIPT_DISPLAY_INLINE
```
public static final BrowserVersionFeatures CSS_NOSCRIPT_DISPLAY_INLINE
```
    The default value of the display property for the 'noscript' tag is 'inline' instead of the default one.
  - CSS_OUTLINE_WIDTH_UNIT_NOT_REQUIRED
```
public static final BrowserVersionFeatures CSS_OUTLINE_WIDTH_UNIT_NOT_REQUIRED
```
    Unit is not required when setting outline-width style.
  - CSS_PROGRESS_DISPLAY_INLINE
```
public static final BrowserVersionFeatures CSS_PROGRESS_DISPLAY_INLINE
```
    The default value of the display property for the 'progress' tag is 'inline' instead of the default one.
  - CSS_PSEUDO_SELECTOR_MS_PLACEHHOLDER
```
public static final BrowserVersionFeatures CSS_PSEUDO_SELECTOR_MS_PLACEHHOLDER
```
    Is the css pseudo selector -ms-input-placeholder supported.
  - CSS_PSEUDO_SELECTOR_PLACEHOLDER_SHOWN
```
public static final BrowserVersionFeatures CSS_PSEUDO_SELECTOR_PLACEHOLDER_SHOWN
```
    Is the css pseudo selector placeholder-shown supported.
  - CSS_RP_DISPLAY_NONE
```
public static final BrowserVersionFeatures CSS_RP_DISPLAY_NONE
```
    The default value of the display property for the 'rp' tag is 'none'.
  - CSS_RT_DISPLAY_RUBY_TEXT_ALWAYS
```
public static final BrowserVersionFeatures CSS_RT_DISPLAY_RUBY_TEXT_ALWAYS
```
    The default value of the display property for the 'rt' tag is always 'ruby-text'.
  - CSS_SET_NULL_THROWS
```
public static final BrowserVersionFeatures CSS_SET_NULL_THROWS
```
    Throws exception on setting a CSS style value to null.
  - CSS_STYLE_PROP_DISCONNECTED_IS_EMPTY
```
public static final BrowserVersionFeatures CSS_STYLE_PROP_DISCONNECTED_IS_EMPTY
```
    For disconnected items style properties are blank.
  - CSS_STYLE_PROP_FONT_DISCONNECTED_IS_EMPTY
```
public static final BrowserVersionFeatures CSS_STYLE_PROP_FONT_DISCONNECTED_IS_EMPTY
```
    For disconnected items style font property is blank.
  - CSS_VERTICAL_ALIGN_SUPPORTS_AUTO
```
public static final BrowserVersionFeatures CSS_VERTICAL_ALIGN_SUPPORTS_AUTO
```
    'auto' is supported when setting vertical-align style.
  - CSS_ZINDEX_TYPE_INTEGER
```
public static final BrowserVersionFeatures CSS_ZINDEX_TYPE_INTEGER
```
    zIndex is of type Integer. Other values are ignored ('').
  - DIALOGWINDOW_REFERER
```
public static final BrowserVersionFeatures DIALOGWINDOW_REFERER
```
    Add the 'Referer' header to a request triggered by window.showModalDialog.
  - DOM_NORMALIZE_REMOVE_CHILDREN
```
public static final BrowserVersionFeatures DOM_NORMALIZE_REMOVE_CHILDREN
```
    IE removes all child text nodes, but FF preserves the first.
  - EVENT_BEFORE_UNLOAD_RETURN_VALUE_IS_HTML5_LIKE
```
public static final BrowserVersionFeatures EVENT_BEFORE_UNLOAD_RETURN_VALUE_IS_HTML5_LIKE
```
    Indicates whether returnValue behaves HTML5-like with an empty string default.
  - EVENT_CONTEXT_MENU_HAS_DETAIL_1
```
public static final BrowserVersionFeatures EVENT_CONTEXT_MENU_HAS_DETAIL_1
```
    The context menu MouseEvent has a detail of 1.
  - EVENT_FOCUS_FOCUS_IN_BLUR_OUT
```
public static final BrowserVersionFeatures EVENT_FOCUS_FOCUS_IN_BLUR_OUT
```
    Triggers the onfocus onfocusin blur onfocusout events in this order.
  - EVENT_FOCUS_IN_FOCUS_OUT_BLUR
```
public static final BrowserVersionFeatures EVENT_FOCUS_IN_FOCUS_OUT_BLUR
```
    Triggers the onfocusin onfocus onfocusout blur events in this order.
  - EVENT_FOCUS_ON_LOAD
```
public static final BrowserVersionFeatures EVENT_FOCUS_ON_LOAD
```
    Triggers the onfocus event when focusing the body on load.
  - EVENT_HANDLER_NULL_RETURN_IS_MEANINGFUL
```
public static final BrowserVersionFeatures EVENT_HANDLER_NULL_RETURN_IS_MEANINGFUL
```
    Indicates whether returning 'null' from a property handler is meaningful.
  - EVENT_MOUSE_ON_DISABLED
```
public static final BrowserVersionFeatures EVENT_MOUSE_ON_DISABLED
```
    Mouse events are triggered on disabled elements also.
  - EVENT_ONANIMATION_DOCUMENT_CREATE_NOT_SUPPORTED
```
public static final BrowserVersionFeatures EVENT_ONANIMATION_DOCUMENT_CREATE_NOT_SUPPORTED
```
    AnimationEvent can not be created by calling document.createEvent('AnimationEvent').
  - EVENT_ONCHANGE_AFTER_ONCLICK
```
public static final BrowserVersionFeatures EVENT_ONCHANGE_AFTER_ONCLICK
```
    Triggers "onchange" event handler after "onclick" event handler.
  - EVENT_ONCLICK_FOR_SELECT_ONLY
```
public static final BrowserVersionFeatures EVENT_ONCLICK_FOR_SELECT_ONLY
```
    Triggers "onclick" event handler for the select only, not for the clicked option.
  - EVENT_ONCLICK_POINTEREVENT_DETAIL_0
```
public static final BrowserVersionFeatures EVENT_ONCLICK_POINTEREVENT_DETAIL_0
```
    PointerEventhas detail of 0.
  - EVENT_ONCLICK_USES_POINTEREVENT
```
public static final BrowserVersionFeatures EVENT_ONCLICK_USES_POINTEREVENT
```
    Triggers 'onclick' event handler using PointerEvent.
  - EVENT_ONCLOSE_DOCUMENT_CREATE_NOT_SUPPORTED
```
public static final BrowserVersionFeatures EVENT_ONCLOSE_DOCUMENT_CREATE_NOT_SUPPORTED
```
    CloseEvent can not be created by calling document.createEvent('CloseEvent').
  - EVENT_ONDOUBLECLICK_USES_POINTEREVENT
```
public static final BrowserVersionFeatures EVENT_ONDOUBLECLICK_USES_POINTEREVENT
```
    Triggers 'ondblclick' event handler using PointerEvent.
  - EVENT_ONLOAD_INTERNAL_JAVASCRIPT
```
public static final BrowserVersionFeatures EVENT_ONLOAD_INTERNAL_JAVASCRIPT
```
    Triggers "onload" event if internal javascript loaded.
  - EVENT_ONMESSAGE_DEFAULT_DATA_NULL
```
public static final BrowserVersionFeatures EVENT_ONMESSAGE_DEFAULT_DATA_NULL
```
    MessageEvent default data value is null.
  - EVENT_ONMOUSEDOWN_FOR_SELECT_OPTION_TRIGGERS_ADDITIONAL_DOWN_FOR_SELECT
```
public static final BrowserVersionFeatures EVENT_ONMOUSEDOWN_FOR_SELECT_OPTION_TRIGGERS_ADDITIONAL_DOWN_FOR_SELECT
```
    Does not trigger "onmousedown" event handler for the select options.
  - EVENT_ONMOUSEDOWN_NOT_FOR_SELECT_OPTION
```
public static final BrowserVersionFeatures EVENT_ONMOUSEDOWN_NOT_FOR_SELECT_OPTION
```
    Does not trigger "onmousedown" event handler for the select options.
  - EVENT_ONMOUSEOVER_FOR_DISABLED_OPTION
```
public static final BrowserVersionFeatures EVENT_ONMOUSEOVER_FOR_DISABLED_OPTION
```
    FF triggers a mouseover event even if the option is disabled.
  - EVENT_ONMOUSEOVER_NEVER_FOR_SELECT_OPTION
```
public static final BrowserVersionFeatures EVENT_ONMOUSEOVER_NEVER_FOR_SELECT_OPTION
```
    IE never triggers a mouseover event for select options.
  - EVENT_ONMOUSEUP_FOR_SELECT_OPTION_TRIGGERS_ADDITIONAL_UP_FOR_SELECT
```
public static final BrowserVersionFeatures EVENT_ONMOUSEUP_FOR_SELECT_OPTION_TRIGGERS_ADDITIONAL_UP_FOR_SELECT
```
    Does not trigger "onmousedown" event handler for the select options.
  - EVENT_ONMOUSEUP_NOT_FOR_SELECT_OPTION
```
public static final BrowserVersionFeatures EVENT_ONMOUSEUP_NOT_FOR_SELECT_OPTION
```
    Does not trigger "onmouseup" event handler for the select options.
  - EVENT_ONPOPSTATE_DOCUMENT_CREATE_NOT_SUPPORTED
```
public static final BrowserVersionFeatures EVENT_ONPOPSTATE_DOCUMENT_CREATE_NOT_SUPPORTED
```
    PopStateEvent can not be created by calling document.createEvent('PopStateEvent').
  - EVENT_TYPE_BEFOREUNLOADEVENT
```
public static final BrowserVersionFeatures EVENT_TYPE_BEFOREUNLOADEVENT
```
    Supports event type 'BeforeUnloadEvent'.
  - EVENT_TYPE_HASHCHANGEEVENT
```
public static final BrowserVersionFeatures EVENT_TYPE_HASHCHANGEEVENT
```
    Supports event type 'HashChangeEvent'.
  - EVENT_TYPE_MOUSEWHEELEVENT
```
public static final BrowserVersionFeatures EVENT_TYPE_MOUSEWHEELEVENT
```
    Supports vendor specific event type 'MouseWheelEvent'.
  - EVENT_TYPE_POINTEREVENT
```
public static final BrowserVersionFeatures EVENT_TYPE_POINTEREVENT
```
    Supports event type 'PointerEvent'.
  - EVENT_TYPE_PROGRESSEVENT
```
public static final BrowserVersionFeatures EVENT_TYPE_PROGRESSEVENT
```
    Supports event type 'ProgressEvent'.
  - EVENT_TYPE_TEXTEVENT
```
public static final BrowserVersionFeatures EVENT_TYPE_TEXTEVENT
```
    Supports event type 'TextEvent'.
  - EVENT_TYPE_WHEELEVENT
```
public static final BrowserVersionFeatures EVENT_TYPE_WHEELEVENT
```
    Supports event type 'WheelEvent'.
  - FOCUS_BODY_ELEMENT_AT_START
```
public static final BrowserVersionFeatures FOCUS_BODY_ELEMENT_AT_START
```
    For new pages the focus points to the body node.
  - FORMFIELD_REACHABLE_BY_NEW_NAMES
```
public static final BrowserVersionFeatures FORMFIELD_REACHABLE_BY_NEW_NAMES
```
    Indicates if a form field is directly reachable by its new name once this has been changed.
  - FORMFIELD_REACHABLE_BY_ORIGINAL_NAME
```
public static final BrowserVersionFeatures FORMFIELD_REACHABLE_BY_ORIGINAL_NAME
```
    Indicates if a form field is directly reachable by its original name once this has been changed.
  - FORM_FORM_ATTRIBUTE_SUPPORTED
```
public static final BrowserVersionFeatures FORM_FORM_ATTRIBUTE_SUPPORTED
```
    Form elements are able to refer to the for by using the from attribute.
  - FORM_IGNORE_REL_NOREFERRER
```
public static final BrowserVersionFeatures FORM_IGNORE_REL_NOREFERRER
```
    Form elements are able to refer to the for by using the from attribute.
  - FORM_PARAMETRS_NOT_SUPPORTED_FOR_IMAGE
```
public static final BrowserVersionFeatures FORM_PARAMETRS_NOT_SUPPORTED_FOR_IMAGE
```
    Form formxxx parameters not supported for input type image.
  - FORM_SUBMISSION_DOWNLOWDS_ALSO_IF_ONLY_HASH_CHANGED
```
public static final BrowserVersionFeatures FORM_SUBMISSION_DOWNLOWDS_ALSO_IF_ONLY_HASH_CHANGED
```
    Form submit forces a real request also if only the hash was changed.
  - FORM_SUBMISSION_HEADER_CACHE_CONTROL_MAX_AGE
```
public static final BrowserVersionFeatures FORM_SUBMISSION_HEADER_CACHE_CONTROL_MAX_AGE
```
    Form submit includes the Cache-Control: max-age=0 header.
  - FORM_SUBMISSION_HEADER_CACHE_CONTROL_NO_CACHE
```
public static final BrowserVersionFeatures FORM_SUBMISSION_HEADER_CACHE_CONTROL_NO_CACHE
```
    Form submit includes the Cache-Control: no-cache header.
  - FORM_SUBMISSION_HEADER_ORIGIN
```
public static final BrowserVersionFeatures FORM_SUBMISSION_HEADER_ORIGIN
```
    Forms are ignoring the rel='noreferrer' attribute.
  - FORM_SUBMISSION_URL_WITHOUT_HASH
```
public static final BrowserVersionFeatures FORM_SUBMISSION_URL_WITHOUT_HASH
```
    Form submit is done without the hash part of the action url.
  - FRAME_LOCATION_ABOUT_BLANK_FOR_ABOUT_SCHEME
```
public static final BrowserVersionFeatures FRAME_LOCATION_ABOUT_BLANK_FOR_ABOUT_SCHEME
```
    If the frame src has 'about:' scheme always use 'about:blank' as source.
  - HTMLABBREVIATED
```
public static final BrowserVersionFeatures HTMLABBREVIATED
```
  - HTMLALLCOLLECTION_DO_NOT_CONVERT_STRINGS_TO_NUMBER
```
public static final BrowserVersionFeatures HTMLALLCOLLECTION_DO_NOT_CONVERT_STRINGS_TO_NUMBER
```
    HtmlAllCollection.item returns null instead of undefined if an element was not found.
  - HTMLALLCOLLECTION_INTEGER_INDEX
```
public static final BrowserVersionFeatures HTMLALLCOLLECTION_INTEGER_INDEX
```
    HtmlAllCollection.item(int) requires int parameter.
  - HTMLALLCOLLECTION_NO_COLLECTION_FOR_MANY_HITS
```
public static final BrowserVersionFeatures HTMLALLCOLLECTION_NO_COLLECTION_FOR_MANY_HITS
```
    HtmlCollection returns the first hit instead of a collection if many elements found.
  - HTMLALLCOLLECTION_NULL_IF_NAMED_ITEM_NOT_FOUND
```
public static final BrowserVersionFeatures HTMLALLCOLLECTION_NULL_IF_NAMED_ITEM_NOT_FOUND
```
    HtmlAllCollection.namedItem returns null instead of undefined if an element was not found.
  - HTMLBASEFONT_END_TAG_FORBIDDEN
```
public static final BrowserVersionFeatures HTMLBASEFONT_END_TAG_FORBIDDEN
```
    Should org.htmlunit.javascript.host.html.HTMLBaseFontElement#isEndTagForbidden().
  - HTMLBASE_HREF_DEFAULT_EMPTY
```
public static final BrowserVersionFeatures HTMLBASE_HREF_DEFAULT_EMPTY
```
    Base tag href attribute is empty if not defined.
  - HTMLBUTTON_SUBMIT_IGNORES_DISABLED_STATE
```
public static final BrowserVersionFeatures HTMLBUTTON_SUBMIT_IGNORES_DISABLED_STATE
```
    If type submit/reset the form update is triggered even if disabled.
  - HTMLBUTTON_WILL_VALIDATE_IGNORES_READONLY
```
public static final BrowserVersionFeatures HTMLBUTTON_WILL_VALIDATE_IGNORES_READONLY
```
    willValidate does not check the readonly property.
  - HTMLCOLLECTION_ITEM_FUNCT_SUPPORTS_DOUBLE_INDEX_ALSO
```
public static final BrowserVersionFeatures HTMLCOLLECTION_ITEM_FUNCT_SUPPORTS_DOUBLE_INDEX_ALSO
```
    HtmlCollection.item() supports also doubles as index.
  - HTMLCOLLECTION_ITEM_SUPPORTS_DOUBLE_INDEX_ALSO
```
public static final BrowserVersionFeatures HTMLCOLLECTION_ITEM_SUPPORTS_DOUBLE_INDEX_ALSO
```
    HtmlCollection.item[] supports also doubles as index.
  - HTMLCOLLECTION_ITEM_SUPPORTS_ID_SEARCH_ALSO
```
public static final BrowserVersionFeatures HTMLCOLLECTION_ITEM_SUPPORTS_ID_SEARCH_ALSO
```
    HtmlCollection.item searches by id also.
  - HTMLCOLLECTION_NAMED_ITEM_ID_FIRST
```
public static final BrowserVersionFeatures HTMLCOLLECTION_NAMED_ITEM_ID_FIRST
```
    HtmlCollection.namedItem searches by id first.
  - HTMLCOLLECTION_NULL_IF_NOT_FOUND
```
public static final BrowserVersionFeatures HTMLCOLLECTION_NULL_IF_NOT_FOUND
```
    HtmlCollection returns null instead of undefined if an element was not found.
  - HTMLCOLLECTION_SUPPORTS_PARANTHESES
```
public static final BrowserVersionFeatures HTMLCOLLECTION_SUPPORTS_PARANTHESES
```
    HtmlAllCollection(int) is not supported.
  - HTMLDOCUMENT_CHARSET_LOWERCASE
```
public static final BrowserVersionFeatures HTMLDOCUMENT_CHARSET_LOWERCASE
```
    Is document.charset lower-case.
  - HTMLDOCUMENT_COLOR
```
public static final BrowserVersionFeatures HTMLDOCUMENT_COLOR
```
    Do document.bgColor/.alinkColor/.vlinkColor/.linkColor have value by default.
  - HTMLDOCUMENT_COOKIES_IGNORE_BLANK
```
public static final BrowserVersionFeatures HTMLDOCUMENT_COOKIES_IGNORE_BLANK
```
    Calling cookies setter with blank string does not reset the cookies.
  - HTMLDOCUMENT_ELEMENTS_BY_NAME_EMPTY
```
public static final BrowserVersionFeatures HTMLDOCUMENT_ELEMENTS_BY_NAME_EMPTY
```
    /** document.getElementsByName returns an empty list if called with the empty string.
  - HTMLDOCUMENT_FUNCTION_DETACHED
```
public static final BrowserVersionFeatures HTMLDOCUMENT_FUNCTION_DETACHED
```
    We can use functions in detached documents.
  - HTMLDOCUMENT_GET_ALSO_FRAMES
```
public static final BrowserVersionFeatures HTMLDOCUMENT_GET_ALSO_FRAMES
```
    Calls to document.XYZ also looks at frames.
  - HTMLDOCUMENT_GET_FOR_ID_AND_OR_NAME
```
public static final BrowserVersionFeatures HTMLDOCUMENT_GET_FOR_ID_AND_OR_NAME
```
    Calls to document.XYZ looks at children with the specified ID and/or name.
  - HTMLDOCUMENT_GET_PREFERS_STANDARD_FUNCTIONS
```
public static final BrowserVersionFeatures HTMLDOCUMENT_GET_PREFERS_STANDARD_FUNCTIONS
```
    Calls to document.XYZ should first look at standard functions before looking at elements named XYZ.
  - HTMLELEMENT_ALIGN_INVALID
```
public static final BrowserVersionFeatures HTMLELEMENT_ALIGN_INVALID
```
    Allows invalid 'align' values.
  - HTMLELEMENT_DETACH_ACTIVE_TRIGGERS_NO_KEYUP_EVENT
```
public static final BrowserVersionFeatures HTMLELEMENT_DETACH_ACTIVE_TRIGGERS_NO_KEYUP_EVENT
```
    Detaching the active element from the dom tree triggers no keyup event.
  - HTMLELEMENT_REMOVE_ACTIVE_TRIGGERS_BLUR_EVENT
```
public static final BrowserVersionFeatures HTMLELEMENT_REMOVE_ACTIVE_TRIGGERS_BLUR_EVENT
```
    Removing the active element from the dom tree triggers the onblur event.
  - HTMLIMAGE_BLANK_SRC_AS_EMPTY
```
public static final BrowserVersionFeatures HTMLIMAGE_BLANK_SRC_AS_EMPTY
```
    Handle blank source like empty.
  - HTMLIMAGE_EMPTY_SRC_DISPLAY_FALSE
```
public static final BrowserVersionFeatures HTMLIMAGE_EMPTY_SRC_DISPLAY_FALSE
```
    Empty src attribute sets display to false.
  - HTMLIMAGE_HTMLELEMENT
```
public static final BrowserVersionFeatures HTMLIMAGE_HTMLELEMENT
```
    Is document.cretaeElement('image') an HTMLElement.
  - HTMLIMAGE_HTMLUNKNOWNELEMENT
```
public static final BrowserVersionFeatures HTMLIMAGE_HTMLUNKNOWNELEMENT
```
    Is document.cretaeElement('image') an HTMLUnknownElement.
  - HTMLIMAGE_INVISIBLE_NO_SRC
```
public static final BrowserVersionFeatures HTMLIMAGE_INVISIBLE_NO_SRC
```
    Mark the image as invisible if no src attribute defined.
  - HTMLIMAGE_NAME_VALUE_PARAMS
```
public static final BrowserVersionFeatures HTMLIMAGE_NAME_VALUE_PARAMS
```
    Clicking an image input submits the value as param if defined.
  - HTMLINPUT_ATTRIBUTE_MIN_MAX_LENGTH_SUPPORTED
```
public static final BrowserVersionFeatures HTMLINPUT_ATTRIBUTE_MIN_MAX_LENGTH_SUPPORTED
```
    HTMLInputElement: minlength and maxlength attributes are supported.
  - HTMLINPUT_CHECKBOX_DOES_NOT_CLICK_SURROUNDING_ANCHOR
```
public static final BrowserVersionFeatures HTMLINPUT_CHECKBOX_DOES_NOT_CLICK_SURROUNDING_ANCHOR
```
    When clicking a checkbox or radio input the surrounding anchor is not clicked.
  - HTMLINPUT_DOES_NOT_CLICK_SURROUNDING_ANCHOR
```
public static final BrowserVersionFeatures HTMLINPUT_DOES_NOT_CLICK_SURROUNDING_ANCHOR
```
    When clicking an input the surrounding anchor is not clicked.
  - HTMLINPUT_FILES_UNDEFINED
```
public static final BrowserVersionFeatures HTMLINPUT_FILES_UNDEFINED
```
    HTMLInputElement: files to be undefined.
  - HTMLINPUT_FILE_SELECTION_START_END_NULL
```
public static final BrowserVersionFeatures HTMLINPUT_FILE_SELECTION_START_END_NULL
```
    HTMLInputElement: type file selectionSart/End are null.
  - HTMLINPUT_TYPE_COLOR_NOT_SUPPORTED
```
public static final BrowserVersionFeatures HTMLINPUT_TYPE_COLOR_NOT_SUPPORTED
```
    HTMLInputElement color type is not supported.
  - HTMLINPUT_TYPE_DATETIME_LOCAL_SUPPORTED
```
public static final BrowserVersionFeatures HTMLINPUT_TYPE_DATETIME_LOCAL_SUPPORTED
```
    HTMLInputElement datetime-local type is supported.
  - HTMLINPUT_TYPE_DATETIME_SUPPORTED
```
public static final BrowserVersionFeatures HTMLINPUT_TYPE_DATETIME_SUPPORTED
```
    HTMLInputElement date and time types are supported.
  - HTMLINPUT_TYPE_IMAGE_IGNORES_CUSTOM_VALIDITY
```
public static final BrowserVersionFeatures HTMLINPUT_TYPE_IMAGE_IGNORES_CUSTOM_VALIDITY
```
    HTMLInputElement image type is not supported.
  - HTMLINPUT_TYPE_MONTH_SUPPORTED
```
public static final BrowserVersionFeatures HTMLINPUT_TYPE_MONTH_SUPPORTED
```
    HTMLInputElement month type is supported.
  - HTMLINPUT_TYPE_WEEK_SUPPORTED
```
public static final BrowserVersionFeatures HTMLINPUT_TYPE_WEEK_SUPPORTED
```
    HTMLInputElement week type is supported.
  - HTMLKEYGEN_END_TAG_FORBIDDEN
```
public static final BrowserVersionFeatures HTMLKEYGEN_END_TAG_FORBIDDEN
```
    Should the HTMLElement of keygen have no end tag.
  - HTMLLINK_CHECK_TYPE_FOR_STYLESHEET
```
public static final BrowserVersionFeatures HTMLLINK_CHECK_TYPE_FOR_STYLESHEET
```
    If the type is present for a link only use if type is text/css.
  - HTMLOPTION_PREVENT_DISABLED
```
public static final BrowserVersionFeatures HTMLOPTION_PREVENT_DISABLED
```
  - HTMLOPTION_REMOVE_SELECTED_ATTRIB_DESELECTS
```
public static final BrowserVersionFeatures HTMLOPTION_REMOVE_SELECTED_ATTRIB_DESELECTS
```
    Removing the selected attribute, de selects the option.
  - HTMLSCRIPT_TRIM_TYPE
```
public static final BrowserVersionFeatures HTMLSCRIPT_TRIM_TYPE
```
    Trims the value of the type attribute before to verify it.
  - HTMLSELECT_WILL_VALIDATE_ALWAYS_TRUE
```
public static final BrowserVersionFeatures HTMLSELECT_WILL_VALIDATE_ALWAYS_TRUE
```
    willValidate returns always true.
  - HTMLSELECT_WILL_VALIDATE_IGNORES_READONLY
```
public static final BrowserVersionFeatures HTMLSELECT_WILL_VALIDATE_IGNORES_READONLY
```
    willValidate does not check the readonly property.
  - HTMLTEXTAREA_SET_DEFAULT_VALUE_UPDATES_VALUE
```
public static final BrowserVersionFeatures HTMLTEXTAREA_SET_DEFAULT_VALUE_UPDATES_VALUE
```
    Setting defaultValue updates the value also.
  - HTMLTEXTAREA_USE_ALL_TEXT_CHILDREN
```
public static final BrowserVersionFeatures HTMLTEXTAREA_USE_ALL_TEXT_CHILDREN
```
    When calculation the value of a text area ie uses a recursive approach.
  - HTMLTEXTAREA_WILL_VALIDATE_IGNORES_READONLY
```
public static final BrowserVersionFeatures HTMLTEXTAREA_WILL_VALIDATE_IGNORES_READONLY
```
    willValidate does not check the readonly property.
  - HTMLTRACK_END_TAG_FORBIDDEN
```
public static final BrowserVersionFeatures HTMLTRACK_END_TAG_FORBIDDEN
```
    Should org.htmlunit.javascript.host.html.HTMLTrackElement#isEndTagForbidden().
  - HTML_ATTRIBUTE_LOWER_CASE
```
public static final BrowserVersionFeatures HTML_ATTRIBUTE_LOWER_CASE
```
    HTML attributes are always lower case.
  - HTML_COLOR_EXPAND_ZERO
```
public static final BrowserVersionFeatures HTML_COLOR_EXPAND_ZERO
```
    Expand #0 to #000000.
  - HTML_COLOR_RESTRICT
```
public static final BrowserVersionFeatures HTML_COLOR_RESTRICT
```
    Do not allow anything invalid in color, but restrict to valid values (names and hex digits) only.
  - HTML_COLOR_TO_LOWER
```
public static final BrowserVersionFeatures HTML_COLOR_TO_LOWER
```
    Convert the color (name and hex code) to lower case.
  - HTML_COMMAND_TAG
```
public static final BrowserVersionFeatures HTML_COMMAND_TAG
```
    HTML parser supports the 'command' tag.
  - HTML_ISINDEX_TAG
```
public static final BrowserVersionFeatures HTML_ISINDEX_TAG
```
    HTML parser supports the 'isindex' tag.
  - HTML_MAIN_TAG
```
public static final BrowserVersionFeatures HTML_MAIN_TAG
```
    HTML parser supports the 'main' tag.
  - HTML_OBJECT_CLASSID
```
public static final BrowserVersionFeatures HTML_OBJECT_CLASSID
```
    Supports <object> classid attribute.
  - HTTP_COOKIE_EXTENDED_DATE_PATTERNS_1
```
public static final BrowserVersionFeatures HTTP_COOKIE_EXTENDED_DATE_PATTERNS_1
```
    Additionally support dates in format "d/M/yyyy".
  - HTTP_COOKIE_EXTENDED_DATE_PATTERNS_2
```
public static final BrowserVersionFeatures HTTP_COOKIE_EXTENDED_DATE_PATTERNS_2
```
    Dates format pattern 2.
  - HTTP_COOKIE_EXTRACT_PATH_FROM_LOCATION
```
public static final BrowserVersionFeatures HTTP_COOKIE_EXTRACT_PATH_FROM_LOCATION
```
    Indicates that the path is extracted from the location. Sample: from the location /foo/boo only /foo is used.
  - HTTP_COOKIE_REMOVE_DOT_FROM_ROOT_DOMAINS
```
public static final BrowserVersionFeatures HTTP_COOKIE_REMOVE_DOT_FROM_ROOT_DOMAINS
```
    domain '.org' is handled as 'org'.
  - HTTP_COOKIE_START_DATE_1970
```
public static final BrowserVersionFeatures HTTP_COOKIE_START_DATE_1970
```
    Indicates that the start date for two digits cookies is 1970 instead of 2000 (Two digits years are interpreted as 20xx if before 1970 and as 19xx otherwise).
  - HTTP_HEADER_CH_UA
```
public static final BrowserVersionFeatures HTTP_HEADER_CH_UA
```
    Browser sends Sec-ch headers.
  - HTTP_HEADER_SEC_FETCH
```
public static final BrowserVersionFeatures HTTP_HEADER_SEC_FETCH
```
    Browser sends Sec-Fetch headers.
  - HTTP_HEADER_UPGRADE_INSECURE_REQUEST
```
public static final BrowserVersionFeatures HTTP_HEADER_UPGRADE_INSECURE_REQUEST
```
    Browser sends Upgrade-Insecure-Requests header.
  - HTTP_REDIRECT_WITHOUT_HASH
```
public static final BrowserVersionFeatures HTTP_REDIRECT_WITHOUT_HASH
```
    Redirection is done without the hash.
  - JS_ALIGN_ACCEPTS_ARBITRARY_VALUES
```
public static final BrowserVersionFeatures JS_ALIGN_ACCEPTS_ARBITRARY_VALUES
```
    Setting the property align to arbitrary values is allowed.
  - JS_ALIGN_FOR_INPUT_IGNORES_VALUES
```
public static final BrowserVersionFeatures JS_ALIGN_FOR_INPUT_IGNORES_VALUES
```
    Setting the property align of an input element ignores the value if the value is one of center, justify, left or right. For all other values an exception is still thrown.
  - JS_ANCHOR_HOSTNAME_IGNORE_BLANK
```
public static final BrowserVersionFeatures JS_ANCHOR_HOSTNAME_IGNORE_BLANK
```
    The anchor hostname setter ignores blank url's.
  - JS_ANCHOR_PATHNAME_DETECT_WIN_DRIVES_URL
```
public static final BrowserVersionFeatures JS_ANCHOR_PATHNAME_DETECT_WIN_DRIVES_URL
```
    The anchor pathname detects url's starting with one letter as file url's.
  - JS_ANCHOR_PATHNAME_DETECT_WIN_DRIVES_URL_REPLACE
```
public static final BrowserVersionFeatures JS_ANCHOR_PATHNAME_DETECT_WIN_DRIVES_URL_REPLACE
```
    The anchor pathname detects url's starting with one letter as file url's and replaces them with the file protocol.
  - JS_ANCHOR_PATHNAME_NONE_FOR_BROKEN_URL
```
public static final BrowserVersionFeatures JS_ANCHOR_PATHNAME_NONE_FOR_BROKEN_URL
```
    The anchor pathname property returns nothing for broken http(s) url's.
  - JS_ANCHOR_PATHNAME_PREFIX_WIN_DRIVES_URL
```
public static final BrowserVersionFeatures JS_ANCHOR_PATHNAME_PREFIX_WIN_DRIVES_URL
```
    The anchor pathname prefixes file url's with '/'.
  - JS_ANCHOR_PROTOCOL_COLON_FOR_BROKEN_URL
```
public static final BrowserVersionFeatures JS_ANCHOR_PROTOCOL_COLON_FOR_BROKEN_URL
```
    The anchor protocol property returns ':' for broken http(s) url's.
  - JS_ANCHOR_PROTOCOL_COLON_UPPER_CASE_DRIVE_LETTERS
```
public static final BrowserVersionFeatures JS_ANCHOR_PROTOCOL_COLON_UPPER_CASE_DRIVE_LETTERS
```
    The anchor protocol property converts drive letters to uppercase.
  - JS_ANCHOR_PROTOCOL_HTTP_FOR_BROKEN_URL
```
public static final BrowserVersionFeatures JS_ANCHOR_PROTOCOL_HTTP_FOR_BROKEN_URL
```
    The anchor protocol property returns 'http' for broken http(s) url's.
  - JS_ANCHOR_PROTOCOL_INVALID_THROWS
```
public static final BrowserVersionFeatures JS_ANCHOR_PROTOCOL_INVALID_THROWS
```
    The anchor protocol property setter throws an error if the protocol is not valid.
  - JS_ANCHOR_REQUIRES_NAME_OR_ID
```
public static final BrowserVersionFeatures JS_ANCHOR_REQUIRES_NAME_OR_ID
```
    Javascript property anchors includes all anchors with a name or an id property. If not set name property is required.
  - JS_API_FETCH
```
public static final BrowserVersionFeatures JS_API_FETCH
```
    Javascript fetch api is supported.
  - JS_AREA_WITHOUT_HREF_FOCUSABLE
```
public static final BrowserVersionFeatures JS_AREA_WITHOUT_HREF_FOCUSABLE
```
    An area element without a href attribute is focusable.
  - JS_ARGUMENTS_READ_ONLY_ACCESSED_FROM_FUNCTION
```
public static final BrowserVersionFeatures JS_ARGUMENTS_READ_ONLY_ACCESSED_FROM_FUNCTION
```
    Indicates that "someFunction.arguments" is a read-only view of the function's argument.
  - JS_ARRAY_FROM
```
public static final BrowserVersionFeatures JS_ARRAY_FROM
```
    Indicates that Array.from() is supported.
  - JS_ATTR_FIRST_LAST_CHILD_RETURNS_NULL
```
public static final BrowserVersionFeatures JS_ATTR_FIRST_LAST_CHILD_RETURNS_NULL
```
    firstChild and lastChild returns null for Attr (like IE does).
  - JS_AUDIO_PROCESSING_EVENT_CTOR
```
public static final BrowserVersionFeatures JS_AUDIO_PROCESSING_EVENT_CTOR
```
    AudioProcessingEvent ctor is callable.
  - JS_BGSOUND_AS_UNKNOWN
```
public static final BrowserVersionFeatures JS_BGSOUND_AS_UNKNOWN
```
    HTMLBGSoundElement reported as HTMLUnknownElement.
  - JS_BLOB_CONTENT_TYPE_CASE_SENSITIVE
```
public static final BrowserVersionFeatures JS_BLOB_CONTENT_TYPE_CASE_SENSITIVE
```
    Whether Blob stores the content type case sensitive.
  - JS_BLOB_EVENT_REQUIRES_DATA
```
public static final BrowserVersionFeatures JS_BLOB_EVENT_REQUIRES_DATA
```
    BlobEvent ctor requires a data value.
  - JS_BODY_MARGINS_8
```
public static final BrowserVersionFeatures JS_BODY_MARGINS_8
```
    Body margin is 8px.
  - JS_BOUNDINGCLIENTRECT_THROWS_IF_DISCONNECTED
```
public static final BrowserVersionFeatures JS_BOUNDINGCLIENTRECT_THROWS_IF_DISCONNECTED
```
    HtmlElement.getBoundingClientRect throws an error if the element is not attached to the page.
  - JS_CANVAS_DATA_URL_CHROME_PNG
```
public static final BrowserVersionFeatures JS_CANVAS_DATA_URL_CHROME_PNG
```
    toDataURL for canvas returns the CHROME version of the PNG.
  - JS_CANVAS_DATA_URL_IE_PNG
```
public static final BrowserVersionFeatures JS_CANVAS_DATA_URL_IE_PNG
```
    toDataURL for canvas returns the IE version of the PNG.
  - JS_CLEAR_RESTRICT
```
public static final BrowserVersionFeatures JS_CLEAR_RESTRICT
```
    Do not allow invalid clear values.
  - JS_CLIENTHEIGHT_INPUT_17
```
public static final BrowserVersionFeatures JS_CLIENTHEIGHT_INPUT_17
```
    ClientHeight for input is 17.
  - JS_CLIENTHEIGHT_INPUT_18
```
public static final BrowserVersionFeatures JS_CLIENTHEIGHT_INPUT_18
```
    ClientHeight for input is 18.
  - JS_CLIENTHEIGHT_RADIO_CHECKBOX_10
```
public static final BrowserVersionFeatures JS_CLIENTHEIGHT_RADIO_CHECKBOX_10
```
    ClientHeight for radio button and checkbox is 10.
  - JS_CLIENTRECTLIST_THROWS_IF_ITEM_NOT_FOUND
```
public static final BrowserVersionFeatures JS_CLIENTRECTLIST_THROWS_IF_ITEM_NOT_FOUND
```
    ClientRectList.item throws instead of returning null if an element was not found.
  - JS_CLIENTWIDTH_INPUT_TEXT_143
```
public static final BrowserVersionFeatures JS_CLIENTWIDTH_INPUT_TEXT_143
```
    ClientWidth for text/password input is 143.
  - JS_CLIENTWIDTH_INPUT_TEXT_173
```
public static final BrowserVersionFeatures JS_CLIENTWIDTH_INPUT_TEXT_173
```
    ClientWidth for text/password input is 173.
  - JS_CLIENTWIDTH_RADIO_CHECKBOX_10
```
public static final BrowserVersionFeatures JS_CLIENTWIDTH_RADIO_CHECKBOX_10
```
    ClientWidth for radio button and checkbox is 10.
  - JS_CONSOLE_TIMESTAMP
```
public static final BrowserVersionFeatures JS_CONSOLE_TIMESTAMP
```
    Console has timeStamp() method.
  - JS_CSSRULELIST_ENUM_ITEM_LENGTH
```
public static final BrowserVersionFeatures JS_CSSRULELIST_ENUM_ITEM_LENGTH
```
    item is enumerated before length property of CSSRuleList.
  - JS_DATE_LOCALE_DATE_SHORT
```
public static final BrowserVersionFeatures JS_DATE_LOCALE_DATE_SHORT
```
    Date.toLocaleDateString() returns a short form (d.M.yyyy).
  - JS_DATE_WITH_LEFT_TO_RIGHT_MARK
```
public static final BrowserVersionFeatures JS_DATE_WITH_LEFT_TO_RIGHT_MARK
```
    DateTimeFormat uses the Unicode Character 'LEFT-TO-RIGHT MARK'.
  - JS_DOCTYPE_ENTITIES_NULL
```
public static final BrowserVersionFeatures JS_DOCTYPE_ENTITIES_NULL
```
    Javascript doctyp.entities returns null (FF10).
  - JS_DOCTYPE_NOTATIONS_NULL
```
public static final BrowserVersionFeatures JS_DOCTYPE_NOTATIONS_NULL
```
    Javascript doctyp.notations returns null (FF10).
  - JS_DOCUMENT_CREATE_ATTRUBUTE_LOWER_CASE
```
public static final BrowserVersionFeatures JS_DOCUMENT_CREATE_ATTRUBUTE_LOWER_CASE
```
    Indicates that document.createAttribute converts the local name to lowercase.
  - JS_DOCUMENT_DESIGN_MODE_INHERIT
```
public static final BrowserVersionFeatures JS_DOCUMENT_DESIGN_MODE_INHERIT
```
    The browser supports the design mode 'Inherit'.
  - JS_DOCUMENT_EVALUATE_RECREATES_RESULT
```
public static final BrowserVersionFeatures JS_DOCUMENT_EVALUATE_RECREATES_RESULT
```
    Javascript document.evaluate creates a new result object even if provided as param.
  - JS_DOCUMENT_FORMS_FUNCTION_SUPPORTED
```
public static final BrowserVersionFeatures JS_DOCUMENT_FORMS_FUNCTION_SUPPORTED
```
    Javascript document.forms(...) supported.
  - JS_DOCUMENT_SELECTION_RANGE_COUNT
```
public static final BrowserVersionFeatures JS_DOCUMENT_SELECTION_RANGE_COUNT
```
    The browser has selection rangeCount.
  - JS_DOCUMENT_SETTING_DOMAIN_THROWS_FOR_ABOUT_BLANK
```
public static final BrowserVersionFeatures JS_DOCUMENT_SETTING_DOMAIN_THROWS_FOR_ABOUT_BLANK
```
    Javascript property document.domain doesn't allow setting domain of about:blank.
  - JS_DOMIMPLEMENTATION_CREATE_HTMLDOCOMENT_REQUIRES_TITLE
```
public static final BrowserVersionFeatures JS_DOMIMPLEMENTATION_CREATE_HTMLDOCOMENT_REQUIRES_TITLE
```
    createHTMLDucument requires a title.
  - JS_DOMIMPLEMENTATION_FEATURE_CORE_3
```
public static final BrowserVersionFeatures JS_DOMIMPLEMENTATION_FEATURE_CORE_3
```
    If document.implementation.hasFeature() supports 'Core 1.0'.
  - JS_DOMIMPLEMENTATION_FEATURE_CSS2_1
```
public static final BrowserVersionFeatures JS_DOMIMPLEMENTATION_FEATURE_CSS2_1
```
    If document.implementation.hasFeature() supports 'CSS2 1.0'.
  - JS_DOMIMPLEMENTATION_FEATURE_CSS2_3
```
public static final BrowserVersionFeatures JS_DOMIMPLEMENTATION_FEATURE_CSS2_3
```
    If document.implementation.hasFeature() supports 'CSS2 3.0'.
  - JS_DOMIMPLEMENTATION_FEATURE_CSS3_1
```
public static final BrowserVersionFeatures JS_DOMIMPLEMENTATION_FEATURE_CSS3_1
```
    If document.implementation.hasFeature() supports 'CSS3 1.0'.
  - JS_DOMIMPLEMENTATION_FEATURE_CSS3_2
```
public static final BrowserVersionFeatures JS_DOMIMPLEMENTATION_FEATURE_CSS3_2
```
    If document.implementation.hasFeature() supports 'CSS3 2.0'.
  - JS_DOMIMPLEMENTATION_FEATURE_CSS3_3
```
public static final BrowserVersionFeatures JS_DOMIMPLEMENTATION_FEATURE_CSS3_3
```
    If document.implementation.hasFeature() supports 'CSS3 3.0'.
  - JS_DOMIMPLEMENTATION_FEATURE_CSS_1
```
public static final BrowserVersionFeatures JS_DOMIMPLEMENTATION_FEATURE_CSS_1
```
    If document.implementation.hasFeature() supports 'CSS 1.0'.
  - JS_DOMIMPLEMENTATION_FEATURE_CSS_2
```
public static final BrowserVersionFeatures JS_DOMIMPLEMENTATION_FEATURE_CSS_2
```
    If document.implementation.hasFeature() supports 'CSS 2.0'.
  - JS_DOMIMPLEMENTATION_FEATURE_CSS_3
```
public static final BrowserVersionFeatures JS_DOMIMPLEMENTATION_FEATURE_CSS_3
```
    If document.implementation.hasFeature() supports 'CSS 3.0'.
  - JS_DOMIMPLEMENTATION_FEATURE_EVENTS_1
```
public static final BrowserVersionFeatures JS_DOMIMPLEMENTATION_FEATURE_EVENTS_1
```
    If document.implementation.hasFeature() supports 'Events 1.0'.
  - JS_DOMIMPLEMENTATION_FEATURE_KEYBOARDEVENTS
```
public static final BrowserVersionFeatures JS_DOMIMPLEMENTATION_FEATURE_KEYBOARDEVENTS
```
    If document.implementation.hasFeature() supports 'KeyboardEvents'.
  - JS_DOMIMPLEMENTATION_FEATURE_LS
```
public static final BrowserVersionFeatures JS_DOMIMPLEMENTATION_FEATURE_LS
```
    If document.implementation.hasFeature() supports 'LS'.
  - JS_DOMIMPLEMENTATION_FEATURE_MUTATIONNAMEEVENTS
```
public static final BrowserVersionFeatures JS_DOMIMPLEMENTATION_FEATURE_MUTATIONNAMEEVENTS
```
    If document.implementation.hasFeature() supports 'MutationNameEvents'.
  - JS_DOMIMPLEMENTATION_FEATURE_RANGE_1
```
public static final BrowserVersionFeatures JS_DOMIMPLEMENTATION_FEATURE_RANGE_1
```
    If document.implementation.hasFeature() supports 'Range 1.0'.
  - JS_DOMIMPLEMENTATION_FEATURE_RANGE_3
```
public static final BrowserVersionFeatures JS_DOMIMPLEMENTATION_FEATURE_RANGE_3
```
    If document.implementation.hasFeature() supports 'Range 3.0'.
  - JS_DOMIMPLEMENTATION_FEATURE_STYLESHEETS
```
public static final BrowserVersionFeatures JS_DOMIMPLEMENTATION_FEATURE_STYLESHEETS
```
    If document.implementation.hasFeature() supports 'StyleSheets 2.0'.
  - JS_DOMIMPLEMENTATION_FEATURE_SVG_BASICSTRUCTURE_1_2
```
public static final BrowserVersionFeatures JS_DOMIMPLEMENTATION_FEATURE_SVG_BASICSTRUCTURE_1_2
```
    If document.implementation.hasFeature() supports 'http://www.w3.org/TR/SVG11/feature#BasicStructure 1.2'.
  - JS_DOMIMPLEMENTATION_FEATURE_TEXTEVENTS
```
public static final BrowserVersionFeatures JS_DOMIMPLEMENTATION_FEATURE_TEXTEVENTS
```
    If document.implementation.hasFeature() supports 'TextEvents'.
  - JS_DOMIMPLEMENTATION_FEATURE_UIEVENTS_2
```
public static final BrowserVersionFeatures JS_DOMIMPLEMENTATION_FEATURE_UIEVENTS_2
```
    If document.implementation.hasFeature() supports 'UIEvents 2.0'.
  - JS_DOMIMPLEMENTATION_FEATURE_VALIDATION
```
public static final BrowserVersionFeatures JS_DOMIMPLEMENTATION_FEATURE_VALIDATION
```
    If document.implementation.hasFeature() supports 'Validation'.
  - JS_DOMIMPLEMENTATION_FEATURE_VIEWS_1
```
public static final BrowserVersionFeatures JS_DOMIMPLEMENTATION_FEATURE_VIEWS_1
```
    If document.implementation.hasFeature() supports 'Views 1.0'.
  - JS_DOMIMPLEMENTATION_FEATURE_VIEWS_3
```
public static final BrowserVersionFeatures JS_DOMIMPLEMENTATION_FEATURE_VIEWS_3
```
    If document.implementation.hasFeature() supports 'Views 3.0'.
  - JS_DOMIMPLEMENTATION_FEATURE_XPATH
```
public static final BrowserVersionFeatures JS_DOMIMPLEMENTATION_FEATURE_XPATH
```
    If document.implementation.hasFeature() supports 'XPath 3.0'.
  - JS_DOMPARSER_EMPTY_STRING_IS_ERROR
```
public static final BrowserVersionFeatures JS_DOMPARSER_EMPTY_STRING_IS_ERROR
```
    DOMParser.parseFromString(..) handles an empty String as error.
  - JS_DOMPARSER_EXCEPTION_ON_ERROR
```
public static final BrowserVersionFeatures JS_DOMPARSER_EXCEPTION_ON_ERROR
```
    DOMParser.parseFromString(..) throws an exception if an error occurs.
  - JS_DOMPARSER_PARSERERROR_ON_ERROR
```
public static final BrowserVersionFeatures JS_DOMPARSER_PARSERERROR_ON_ERROR
```
    DOMParser.parseFromString(..) creates a document containing a parsererror element.
  - JS_DOMTOKENLIST_CONTAINS_RETURNS_FALSE_FOR_BLANK
```
public static final BrowserVersionFeatures JS_DOMTOKENLIST_CONTAINS_RETURNS_FALSE_FOR_BLANK
```
    DOMTokenList returns false instead of throwing an exception when receiver is blank.
  - JS_DOMTOKENLIST_ENHANCED_WHITESPACE_CHARS
```
public static final BrowserVersionFeatures JS_DOMTOKENLIST_ENHANCED_WHITESPACE_CHARS
```
    DOMTokenList uses an enhanced set of whitespace chars.
  - JS_DOMTOKENLIST_GET_NULL_IF_OUTSIDE
```
public static final BrowserVersionFeatures JS_DOMTOKENLIST_GET_NULL_IF_OUTSIDE
```
    DOMTokenList index access returns null if index is outside.
  - JS_DOMTOKENLIST_LENGTH_IGNORES_DUPLICATES
```
public static final BrowserVersionFeatures JS_DOMTOKENLIST_LENGTH_IGNORES_DUPLICATES
```
    DOMTokenList ignores duplicates when determining the length.
  - JS_DOMTOKENLIST_REMOVE_WHITESPACE_CHARS_ON_ADD
```
public static final BrowserVersionFeatures JS_DOMTOKENLIST_REMOVE_WHITESPACE_CHARS_ON_ADD
```
    DOMTokenList removed all whitespace chars during add.
  - JS_DOMTOKENLIST_REMOVE_WHITESPACE_CHARS_ON_REMOVE
```
public static final BrowserVersionFeatures JS_DOMTOKENLIST_REMOVE_WHITESPACE_CHARS_ON_REMOVE
```
    DOMTokenList removed all whitespace chars during remove.
  - JS_DOM_CDATA_DELETE_THROWS_NEGATIVE_COUNT
```
public static final BrowserVersionFeatures JS_DOM_CDATA_DELETE_THROWS_NEGATIVE_COUNT
```
    Javascript property function delete throws an exception if the given count is negative.
  - JS_ELEMENT_GET_ATTRIBUTE_RETURNS_EMPTY
```
public static final BrowserVersionFeatures JS_ELEMENT_GET_ATTRIBUTE_RETURNS_EMPTY
```
    Indicates that attributeNS returns an empty string instead of null if not found.
  - JS_ERROR_CAPTURE_STACK_TRACE
```
public static final BrowserVersionFeatures JS_ERROR_CAPTURE_STACK_TRACE
```
    Javascript Error.captureStackTrace.
  - JS_ERROR_STACK_TRACE_LIMIT
```
public static final BrowserVersionFeatures JS_ERROR_STACK_TRACE_LIMIT
```
    Javascript Error.stackTraceLimit.
  - JS_EVENT_INPUT_CTOR_INPUTTYPE
```
public static final BrowserVersionFeatures JS_EVENT_INPUT_CTOR_INPUTTYPE
```
    Javascript InputEvent reads the inputType property from data.
  - JS_EVENT_KEYBOARD_CTOR_WHICH
```
public static final BrowserVersionFeatures JS_EVENT_KEYBOARD_CTOR_WHICH
```
    Javascript KeyboardEvent reads the which property from data.
  - JS_EVENT_LOAD_SUPPRESSED_BY_CONTENT_SECURIRY_POLICY
```
public static final BrowserVersionFeatures JS_EVENT_LOAD_SUPPRESSED_BY_CONTENT_SECURIRY_POLICY
```
    do not trigger the onload event if the frame content was not shown because of the csp.
  - JS_FILEREADER_CONTENT_TYPE
```
public static final BrowserVersionFeatures JS_FILEREADER_CONTENT_TYPE
```
    Whether FileReader includes content type or not.
  - JS_FILEREADER_EMPTY_NULL
```
public static final BrowserVersionFeatures JS_FILEREADER_EMPTY_NULL
```
    Whether FileReader includes base64 for empty content or not.
  - JS_FORM_ACTION_EXPANDURL_NOT_DEFINED
```
public static final BrowserVersionFeatures JS_FORM_ACTION_EXPANDURL_NOT_DEFINED
```
    Indicates that the action property will not be expanded if defined as empty string.
  - JS_FORM_DATA_CONTENT_TYPE_PLAIN_IF_FILE_TYPE_UNKNOWN
```
public static final BrowserVersionFeatures JS_FORM_DATA_CONTENT_TYPE_PLAIN_IF_FILE_TYPE_UNKNOWN
```
    use content-type text/plain if the file type is unknown'.
  - JS_FORM_DISPATCHEVENT_SUBMITS
```
public static final BrowserVersionFeatures JS_FORM_DISPATCHEVENT_SUBMITS
```
    form.dispatchEvent(e) submits the form if the event is of type 'submit'.
  - JS_FORM_REJECT_INVALID_ENCODING
```
public static final BrowserVersionFeatures JS_FORM_REJECT_INVALID_ENCODING
```
    Setting form.encoding only allowed for valid encodings.
  - JS_FORM_SUBMIT_FORCES_DOWNLOAD
```
public static final BrowserVersionFeatures JS_FORM_SUBMIT_FORCES_DOWNLOAD
```
    Calling form.submit() twice forces double download.
  - JS_FORM_USABLE_AS_FUNCTION
```
public static final BrowserVersionFeatures JS_FORM_USABLE_AS_FUNCTION
```
    Support for document.formName('inputName').
  - JS_FRAME_CONTENT_DOCUMENT_ACCESS_DENIED_THROWS
```
public static final BrowserVersionFeatures JS_FRAME_CONTENT_DOCUMENT_ACCESS_DENIED_THROWS
```
    contentDocument throws if the frame document access is denied.
  - JS_GLOBAL_THIS
```
public static final BrowserVersionFeatures JS_GLOBAL_THIS
```
    Supports globalThis.
  - JS_GROUPINGRULE_INSERTRULE_INDEX_OPTIONAL
```
public static final BrowserVersionFeatures JS_GROUPINGRULE_INSERTRULE_INDEX_OPTIONAL
```
    The index parameter of CSSGroupingRule.insertRule(String, Object) is optional.
  - JS_HTML_HYPHEN_ELEMENT_CLASS_NAME
```
public static final BrowserVersionFeatures JS_HTML_HYPHEN_ELEMENT_CLASS_NAME
```
    HTMLElement instead of HTMLUnknownElement for elements with hyphen ('-').
  - JS_HTML_OBJECT_VALIDITYSTATE_ISVALID_IGNORES_CUSTOM_ERROR
```
public static final BrowserVersionFeatures JS_HTML_OBJECT_VALIDITYSTATE_ISVALID_IGNORES_CUSTOM_ERROR
```
    HTMLObject Validity isValid ignores custom error property.
  - JS_HTML_RUBY_ELEMENT_CLASS_NAME
```
public static final BrowserVersionFeatures JS_HTML_RUBY_ELEMENT_CLASS_NAME
```
    HTMLElement instead of HTMLUnknownElement for ruby elements.
  - JS_IFRAME_ALWAYS_EXECUTE_ONLOAD
```
public static final BrowserVersionFeatures JS_IFRAME_ALWAYS_EXECUTE_ONLOAD
```
    Executes the onload handler, regardless of the whether the element was already attached to the page.
  - JS_IGNORES_LAST_LINE_CONTAINING_UNCOMMENTED
```
public static final BrowserVersionFeatures JS_IGNORES_LAST_LINE_CONTAINING_UNCOMMENTED
```
    Ignore the last line containing uncommented.
  - JS_IGNORES_UTF8_BOM_SOMETIMES
```
public static final BrowserVersionFeatures JS_IGNORES_UTF8_BOM_SOMETIMES
```
    Ignore the UTF8 BOM header when loading external js in some situations.
  - JS_IMAGE_COMPLETE_RETURNS_TRUE_FOR_NO_REQUEST
```
public static final BrowserVersionFeatures JS_IMAGE_COMPLETE_RETURNS_TRUE_FOR_NO_REQUEST
```
    The complete property returns also true, if the image download was failing or if there was no src at all.
  - JS_IMAGE_WIDTH_HEIGHT_EMPTY_SOURCE_RETURNS_0x0
```
public static final BrowserVersionFeatures JS_IMAGE_WIDTH_HEIGHT_EMPTY_SOURCE_RETURNS_0x0
```
    Getting the width and height of an image tag with an empty source returns 0x0.
  - JS_IMAGE_WIDTH_HEIGHT_RETURNS_16x16_0x0
```
public static final BrowserVersionFeatures JS_IMAGE_WIDTH_HEIGHT_RETURNS_16x16_0x0
```
    Getting the width and height of an image tag without a source returns 16x16; for invalid values returns 0.
  - JS_IMAGE_WIDTH_HEIGHT_RETURNS_24x24_0x0
```
public static final BrowserVersionFeatures JS_IMAGE_WIDTH_HEIGHT_RETURNS_24x24_0x0
```
    Getting the width and height of an image tag without a source returns 24x24; for invalid values returns 0x0.
  - JS_IMAGE_WIDTH_HEIGHT_RETURNS_28x30_28x30
```
public static final BrowserVersionFeatures JS_IMAGE_WIDTH_HEIGHT_RETURNS_28x30_28x30
```
    Getting the width and height of an image tag without a source returns 28x30; for invalid values returns same.
  - JS_INNER_HTML_ADD_CHILD_FOR_NULL_VALUE
```
public static final BrowserVersionFeatures JS_INNER_HTML_ADD_CHILD_FOR_NULL_VALUE
```
    Indicates that innerHTML adds the child also for null values.
  - JS_INNER_HTML_LF
```
public static final BrowserVersionFeatures JS_INNER_HTML_LF
```
    Indicates that innerHTML uses lf instead of lf.
  - JS_INNER_TEXT_SCRIPT
```
public static final BrowserVersionFeatures JS_INNER_TEXT_SCRIPT
```
    Indicates that innerText adds script content also.
  - JS_INNER_TEXT_SVG_NL
```
public static final BrowserVersionFeatures JS_INNER_TEXT_SVG_NL
```
    Indicates that innerText add a nl when reaching svg element.
  - JS_INNER_TEXT_SVG_TITLE
```
public static final BrowserVersionFeatures JS_INNER_TEXT_SVG_TITLE
```
    Indicates that innerText add svg title content also.
  - JS_INNER_TEXT_VALUE_NULL
```
public static final BrowserVersionFeatures JS_INNER_TEXT_VALUE_NULL
```
    Indicates that innerText setter supports null values.
  - JS_INPUT_CHANGE_TYPE_DROPS_VALUE
```
public static final BrowserVersionFeatures JS_INPUT_CHANGE_TYPE_DROPS_VALUE
```
    The value is ignored when the type of an input is changed.
  - JS_INPUT_CHANGE_TYPE_DROPS_VALUE_WEEK_MONTH
```
public static final BrowserVersionFeatures JS_INPUT_CHANGE_TYPE_DROPS_VALUE_WEEK_MONTH
```
    The value is ignored when the type of an week/month input is changed.
  - JS_INPUT_IGNORE_NEGATIVE_SELECTION_START
```
public static final BrowserVersionFeatures JS_INPUT_IGNORE_NEGATIVE_SELECTION_START
```
    Ignore negative selection starts.
  - JS_INPUT_NUMBER_ACCEPT_ALL
```
public static final BrowserVersionFeatures JS_INPUT_NUMBER_ACCEPT_ALL
```
    FF accepts all chars.
  - JS_INPUT_NUMBER_DOT_AT_END_IS_DOUBLE
```
public static final BrowserVersionFeatures JS_INPUT_NUMBER_DOT_AT_END_IS_DOUBLE
```
    FF comma at end is not an integer.
  - JS_INPUT_NUMBER_SELECTION_START_END_NULL
```
public static final BrowserVersionFeatures JS_INPUT_NUMBER_SELECTION_START_END_NULL
```
    Chrome/FF returns null for selectionStart/selectionEnd.
  - JS_INPUT_SET_TYPE_LOWERCASE
```
public static final BrowserVersionFeatures JS_INPUT_SET_TYPE_LOWERCASE
```
    Setting the type property of an input converts the type to lowercase.
  - JS_INPUT_SET_UNSUPORTED_TYPE_EXCEPTION
```
public static final BrowserVersionFeatures JS_INPUT_SET_UNSUPORTED_TYPE_EXCEPTION
```
    Setting of unsupported type value throw exception.
  - JS_INPUT_SET_VALUE_DATE_SUPPORTED
```
public static final BrowserVersionFeatures JS_INPUT_SET_VALUE_DATE_SUPPORTED
```
    Setting the value of an Input Date will check for correct format.
  - JS_INPUT_SET_VALUE_EMAIL_TRIMMED
```
public static final BrowserVersionFeatures JS_INPUT_SET_VALUE_EMAIL_TRIMMED
```
    Setting the value of an Input Email to blank will result in an empty value.
  - JS_INPUT_SET_VALUE_MOVE_SELECTION_TO_START
```
public static final BrowserVersionFeatures JS_INPUT_SET_VALUE_MOVE_SELECTION_TO_START
```
    Setting the value of an Input Text/Password/TextArea resets the selection.
  - JS_INPUT_URL_VALUE_TRIMMED
```
public static final BrowserVersionFeatures JS_INPUT_URL_VALUE_TRIMMED
```
    Setting the value of an Input URL to blank will result in an empty value.
  - JS_INTL_NAMED_OBJECT
```
public static final BrowserVersionFeatures JS_INTL_NAMED_OBJECT
```
    Intl is named Object.
  - JS_INTL_V8_BREAK_ITERATOR
```
public static final BrowserVersionFeatures JS_INTL_V8_BREAK_ITERATOR
```
    Indicates that Intl.v8BreakIterator is supported.
  - JS_IS_SEARCH_PROVIDER_INSTALLED_ZERO
```
public static final BrowserVersionFeatures JS_IS_SEARCH_PROVIDER_INSTALLED_ZERO
```
    Indicates that isSearchProviderInstalled returns zero instead of undefined.
  - JS_LABEL_FORM_OF_SELF
```
public static final BrowserVersionFeatures JS_LABEL_FORM_OF_SELF
```
    The property form of a label returns the form the label is assigned to.
  - JS_LOCATION_HASH_HASH_IS_ENCODED
```
public static final BrowserVersionFeatures JS_LOCATION_HASH_HASH_IS_ENCODED
```
    location.hash returns an encoded hash.
  - JS_LOCATION_HASH_IS_DECODED
```
public static final BrowserVersionFeatures JS_LOCATION_HASH_IS_DECODED
```
    Set this property if the browser evaluates
    window.location.hash to #ü (like Firefox)
    for url 'http://localhost/something/#%C3%BC'.
    IE evaluates to #%C3%BC.
  - JS_LOCATION_HASH_RETURNS_HASH_FOR_EMPTY_DEFINED
```
public static final BrowserVersionFeatures JS_LOCATION_HASH_RETURNS_HASH_FOR_EMPTY_DEFINED
```
    Property location.hash returns '#' for urls ending with a hash sign (e.g. http://localhost/something/#).
  - JS_LOCATION_HREF_HASH_IS_ENCODED
```
public static final BrowserVersionFeatures JS_LOCATION_HREF_HASH_IS_ENCODED
```
    Set this property if the browser evaluates
    window.location.hash to #%C3%BC; (like Firefox)
    for url 'http://localhost/something/#ü'.
    IE evaluates to #ü.
  - JS_LOCATION_RELOAD_REFERRER
```
public static final BrowserVersionFeatures JS_LOCATION_RELOAD_REFERRER
```
    Reload sends a referrer header.
  - JS_MEDIA_LIST_ALL
```
public static final BrowserVersionFeatures JS_MEDIA_LIST_ALL
```
    Indicates that an empty media list is represented by the string 'all'.
  - JS_MEDIA_LIST_EMPTY_STRING
```
public static final BrowserVersionFeatures JS_MEDIA_LIST_EMPTY_STRING
```
    Indicates that an empty media list is represented by the string ''.
  - JS_MENU_TYPE_EMPTY
```
public static final BrowserVersionFeatures JS_MENU_TYPE_EMPTY
```
    Type property of menu has always '' as value.
  - JS_MENU_TYPE_PASS
```
public static final BrowserVersionFeatures JS_MENU_TYPE_PASS
```
    Type property of menu returns the current (maybe invalid) value.
  - JS_NATIVE_FUNCTION_TOSTRING_COMPACT
```
public static final BrowserVersionFeatures JS_NATIVE_FUNCTION_TOSTRING_COMPACT
```
    Indicates if the String representation of a native function is without newline.
  - JS_NATIVE_FUNCTION_TOSTRING_NEW_LINE
```
public static final BrowserVersionFeatures JS_NATIVE_FUNCTION_TOSTRING_NEW_LINE
```
    Indicates if the String representation of a native function begins and ends with a \n.
  - JS_NATIVE_FUNCTION_TOSTRING_NL
```
public static final BrowserVersionFeatures JS_NATIVE_FUNCTION_TOSTRING_NL
```
    Indicates if the String representation of a native function has a newline for empty parameter list.
  - JS_NAVIGATOR_DO_NOT_TRACK_UNSPECIFIED
```
public static final BrowserVersionFeatures JS_NAVIGATOR_DO_NOT_TRACK_UNSPECIFIED
```
    Navigator.doNotTrack returns unspecified if not set.
  - JS_NODE_CONTAINS_RETURNS_FALSE_FOR_INVALID_ARG
```
public static final BrowserVersionFeatures JS_NODE_CONTAINS_RETURNS_FALSE_FOR_INVALID_ARG
```
    Node.contains returns false instead of throwing an exception.
  - JS_NODE_INSERT_BEFORE_REF_OPTIONAL
```
public static final BrowserVersionFeatures JS_NODE_INSERT_BEFORE_REF_OPTIONAL
```
    The reference argument of Node.insertBefore(..) is optional.
  - JS_OBJECT_ASSIGN
```
public static final BrowserVersionFeatures JS_OBJECT_ASSIGN
```
    Indicates that Object.assign() is supported.
  - JS_OBJECT_GET_OWN_PROPERTY_SYMBOLS
```
public static final BrowserVersionFeatures JS_OBJECT_GET_OWN_PROPERTY_SYMBOLS
```
    Indicates that Object.getOwnPropertySymbols() is supported.
  - JS_OFFSET_PARENT_NULL_IF_FIXED
```
public static final BrowserVersionFeatures JS_OFFSET_PARENT_NULL_IF_FIXED
```
    Indicates that someObj.offsetParent returns null, it someObj has fixed style.
  - JS_OUTER_HTML_NULL_AS_STRING
```
public static final BrowserVersionFeatures JS_OUTER_HTML_NULL_AS_STRING
```
    element.outerHTML handles null value as string "null".
  - JS_OUTER_HTML_REMOVES_CHILDREN_FOR_DETACHED
```
public static final BrowserVersionFeatures JS_OUTER_HTML_REMOVES_CHILDREN_FOR_DETACHED
```
    element.outerHTML removes all children from detached node.
  - JS_OUTER_HTML_THROWS_FOR_DETACHED
```
public static final BrowserVersionFeatures JS_OUTER_HTML_THROWS_FOR_DETACHED
```
    element.outerHTML removes all children from detached node.
  - JS_PAGERULE_SELECTORTEXT_EMPTY
```
public static final BrowserVersionFeatures JS_PAGERULE_SELECTORTEXT_EMPTY
```
    Indicates that CSSPageRule.selectorText always returns an empty string.
  - JS_PHRASE_COMMON_CLASS_NAME
```
public static final BrowserVersionFeatures JS_PHRASE_COMMON_CLASS_NAME
```
    Indicates that HTMLPhraseElements returning 'HTMLElement' as class name.
  - JS_POP_STATE_EVENT_CLONE_STATE
```
public static final BrowserVersionFeatures JS_POP_STATE_EVENT_CLONE_STATE
```
    Indicates that the PopStateEvent.state is cloned.
  - JS_PRE_WIDTH_STRING
```
public static final BrowserVersionFeatures JS_PRE_WIDTH_STRING
```
    Indicates that the pre.width is string.
  - JS_PROMISE
```
public static final BrowserVersionFeatures JS_PROMISE
```
    Supports Promise.
  - JS_PROPERTY_DESCRIPTOR_NAME
```
public static final BrowserVersionFeatures JS_PROPERTY_DESCRIPTOR_NAME
```
    Indicates that the Object.getOwnPropertyDescriptor.get contains name.
  - JS_PROPERTY_DESCRIPTOR_NEW_LINE
```
public static final BrowserVersionFeatures JS_PROPERTY_DESCRIPTOR_NEW_LINE
```
    Indicates that the Object.getOwnPropertyDescriptor.get starts with a new line.
  - JS_REFLECT
```
public static final BrowserVersionFeatures JS_REFLECT
```
    Support Reflect.
  - JS_REGEXP_EMPTY_LASTPAREN_IF_TOO_MANY_GROUPS
```
public static final BrowserVersionFeatures JS_REGEXP_EMPTY_LASTPAREN_IF_TOO_MANY_GROUPS
```
    RegExp.lastParen returns an empty string if the RegExp has too many groups.
  - JS_REGEXP_GROUP0_RETURNS_WHOLE_MATCH
```
public static final BrowserVersionFeatures JS_REGEXP_GROUP0_RETURNS_WHOLE_MATCH
```
    RegExp group $0 returns the whole previous match (see Matcher.group()).
  - JS_SCRIPT_HANDLE_204_AS_ERROR
```
public static final BrowserVersionFeatures JS_SCRIPT_HANDLE_204_AS_ERROR
```
    Javascript script tags handles a 204 (no content) response for the src attrib as error.
  - JS_SCRIPT_SUPPORTS_FOR_AND_EVENT_WINDOW
```
public static final BrowserVersionFeatures JS_SCRIPT_SUPPORTS_FOR_AND_EVENT_WINDOW
```
    Javascript script tags supports the 'for' and the 'event' attribute.
  - JS_SELECTOR_TEXT_LOWERCASE
```
public static final BrowserVersionFeatures JS_SELECTOR_TEXT_LOWERCASE
```
    Javascript selectorText property returns selectors in lower case.
  - JS_SELECT_FILE_THROWS
```
public static final BrowserVersionFeatures JS_SELECT_FILE_THROWS
```
    Indicates that setting the value to null has no effect.
  - JS_SELECT_OPTIONS_HAS_SELECT_CLASS_NAME
```
public static final BrowserVersionFeatures JS_SELECT_OPTIONS_HAS_SELECT_CLASS_NAME
```
    Indicates that select.options has a wong class name.
  - JS_SELECT_OPTIONS_IGNORE_NEGATIVE_LENGTH
```
public static final BrowserVersionFeatures JS_SELECT_OPTIONS_IGNORE_NEGATIVE_LENGTH
```
    Ignore negative value when setting the length.
  - JS_SELECT_OPTIONS_IN_ALWAYS_TRUE
```
public static final BrowserVersionFeatures JS_SELECT_OPTIONS_IN_ALWAYS_TRUE
```
    The 'in' operator returns always true for HtmlOptionsCollection.
  - JS_SELECT_OPTIONS_NULL_FOR_OUTSIDE
```
public static final BrowserVersionFeatures JS_SELECT_OPTIONS_NULL_FOR_OUTSIDE
```
    Indicates that select.options returns null if requested index is outside.
  - JS_SELECT_OPTIONS_REMOVE_IGNORE_IF_INDEX_NEGATIVE
```
public static final BrowserVersionFeatures JS_SELECT_OPTIONS_REMOVE_IGNORE_IF_INDEX_NEGATIVE
```
    Indicates that select.options.remove ignores the call if index is too large.
  - JS_SELECT_OPTIONS_REMOVE_THROWS_IF_NEGATIV
```
public static final BrowserVersionFeatures JS_SELECT_OPTIONS_REMOVE_THROWS_IF_NEGATIV
```
    Indicates that select.options[i] throws an exception if the requested index is negative.
  - JS_SELECT_REMOVE_IGNORE_IF_INDEX_OUTSIDE
```
public static final BrowserVersionFeatures JS_SELECT_REMOVE_IGNORE_IF_INDEX_OUTSIDE
```
    Indicates that select.options.remove ignores the call if index is too large.
  - JS_SELECT_SET_VALUES_CHECKS_ONLY_VALUE_ATTRIBUTE
```
public static final BrowserVersionFeatures JS_SELECT_SET_VALUES_CHECKS_ONLY_VALUE_ATTRIBUTE
```
    Indicates that select.value = 'val' only checks the value attribute and not the option text.
  - JS_STORAGE_GET_FROM_ITEMS
```
public static final BrowserVersionFeatures JS_STORAGE_GET_FROM_ITEMS
```
    Whether to get any property from the items first.
  - JS_STORAGE_PRESERVED_INCLUDED
```
public static final BrowserVersionFeatures JS_STORAGE_PRESERVED_INCLUDED
```
    Whether to add to the storage even preserved words.
  - JS_STRING_INCLUDES
```
public static final BrowserVersionFeatures JS_STRING_INCLUDES
```
    Indicates that string.includes() is supported.
  - JS_STRING_REPEAT
```
public static final BrowserVersionFeatures JS_STRING_REPEAT
```
    Indicates that string.startsWith() and .endWith() are supported.
  - JS_STRING_STARTS_ENDS_WITH
```
public static final BrowserVersionFeatures JS_STRING_STARTS_ENDS_WITH
```
    Indicates that string.startsWith() and .endWith() are supported.
  - JS_STRING_TRIM_LEFT_RIGHT
```
public static final BrowserVersionFeatures JS_STRING_TRIM_LEFT_RIGHT
```
    Indicates that string.trimLeft() and .trimRight() are supported.
  - JS_STYLESHEETLIST_ACTIVE_ONLY
```
public static final BrowserVersionFeatures JS_STYLESHEETLIST_ACTIVE_ONLY
```
    Stylesheet list contains only active style sheets.
  - JS_STYLE_UNSUPPORTED_PROPERTY_GETTER
```
public static final BrowserVersionFeatures JS_STYLE_UNSUPPORTED_PROPERTY_GETTER
```
    IE supports accessing unsupported style elements via getter like val = elem.style.htmlunit;.
  - JS_STYLE_WORD_SPACING_ACCEPTS_PERCENT
```
public static final BrowserVersionFeatures JS_STYLE_WORD_SPACING_ACCEPTS_PERCENT
```
    Indicates wordSpacing support percent values.
  - JS_STYLE_WRONG_INDEX_RETURNS_UNDEFINED
```
public static final BrowserVersionFeatures JS_STYLE_WRONG_INDEX_RETURNS_UNDEFINED
```
    Indicates that trying to access the style property with a wrong index returns undefined instead of "".
  - JS_SYMBOL
```
public static final BrowserVersionFeatures JS_SYMBOL
```
    Supports Symbol.
  - JS_TABLE_CELL_HEIGHT_DOES_NOT_RETURN_NEGATIVE_VALUES
```
public static final BrowserVersionFeatures JS_TABLE_CELL_HEIGHT_DOES_NOT_RETURN_NEGATIVE_VALUES
```
    The width cell height does not return negative values.
  - JS_TABLE_CELL_OFFSET_INCLUDES_BORDER
```
public static final BrowserVersionFeatures JS_TABLE_CELL_OFFSET_INCLUDES_BORDER
```
    The width cell offset calculation takes border into account.
  - JS_TABLE_CELL_WIDTH_DOES_NOT_RETURN_NEGATIVE_VALUES
```
public static final BrowserVersionFeatures JS_TABLE_CELL_WIDTH_DOES_NOT_RETURN_NEGATIVE_VALUES
```
    The width cell property does not return negative values.
  - JS_TABLE_COLUMN_WIDTH_NO_NEGATIVE_VALUES
```
public static final BrowserVersionFeatures JS_TABLE_COLUMN_WIDTH_NO_NEGATIVE_VALUES
```
    The width column property does not return negative values.
  - JS_TABLE_COLUMN_WIDTH_NULL_STRING
```
public static final BrowserVersionFeatures JS_TABLE_COLUMN_WIDTH_NULL_STRING
```
    The width column property has a value of 'null' for null.
  - JS_TABLE_ROW_DELETE_CELL_REQUIRES_INDEX
```
public static final BrowserVersionFeatures JS_TABLE_ROW_DELETE_CELL_REQUIRES_INDEX
```
    Calling deleteCell without an index throws an exception.
  - JS_TABLE_SPAN_SET_ZERO_IF_INVALID
```
public static final BrowserVersionFeatures JS_TABLE_SPAN_SET_ZERO_IF_INVALID
```
    Set span zo zero if provided value is invalid.
  - JS_TABLE_SPAN_THROWS_EXCEPTION_IF_INVALID
```
public static final BrowserVersionFeatures JS_TABLE_SPAN_THROWS_EXCEPTION_IF_INVALID
```
    Throws an exception if the value for column span is less than one.
  - JS_TABLE_VALIGN_SUPPORTS_IE_VALUES
```
public static final BrowserVersionFeatures JS_TABLE_VALIGN_SUPPORTS_IE_VALUES
```
    Indicates that table elements supports the values "top", "bottom", "middle", "baseline".
  - JS_TEXT_AREA_GET_MAXLENGTH_MAX_INT
```
public static final BrowserVersionFeatures JS_TEXT_AREA_GET_MAXLENGTH_MAX_INT
```
    Getting the property maxLength if it is not defined in the DOM returns MAX_INT. FF and Chrome return -1.
  - JS_TEXT_AREA_SET_COLS_NEGATIVE_THROWS_EXCEPTION
```
public static final BrowserVersionFeatures JS_TEXT_AREA_SET_COLS_NEGATIVE_THROWS_EXCEPTION
```
    Setting the property cols throws an exception, if the provided value is less than 0. FF ignores the provided value in this case.
  - JS_TEXT_AREA_SET_COLS_THROWS_EXCEPTION
```
public static final BrowserVersionFeatures JS_TEXT_AREA_SET_COLS_THROWS_EXCEPTION
```
    Setting the property cols throws an exception, if the provided value is not convertible into an integer. FF ignores the provided value in this case and sets cols to 0.
  - JS_TEXT_AREA_SET_MAXLENGTH_NEGATIVE_THROWS_EXCEPTION
```
public static final BrowserVersionFeatures JS_TEXT_AREA_SET_MAXLENGTH_NEGATIVE_THROWS_EXCEPTION
```
    Setting the property maxLength throws an exception, if the provided value is less than 0.
  - JS_TEXT_AREA_SET_ROWS_NEGATIVE_THROWS_EXCEPTION
```
public static final BrowserVersionFeatures JS_TEXT_AREA_SET_ROWS_NEGATIVE_THROWS_EXCEPTION
```
    Setting the property rows throws an exception, if the provided value is less than 0.
  - JS_TEXT_AREA_SET_ROWS_THROWS_EXCEPTION
```
public static final BrowserVersionFeatures JS_TEXT_AREA_SET_ROWS_THROWS_EXCEPTION
```
    Setting the property rows throws an exception, if the provided value is not convertible into an integer. FF ignores the provided value in this case and sets rows to 0.
  - JS_TEXT_AREA_SET_VALUE_NULL
```
public static final BrowserVersionFeatures JS_TEXT_AREA_SET_VALUE_NULL
```
    Setting the value processes null as null value.
  - JS_TREEWALKER_EXPAND_ENTITY_REFERENCES_FALSE
```
public static final BrowserVersionFeatures JS_TREEWALKER_EXPAND_ENTITY_REFERENCES_FALSE
```
    Indicates that TreeWalker.expandEntityReferences is always false.
  - JS_TREEWALKER_FILTER_FUNCTION_ONLY
```
public static final BrowserVersionFeatures JS_TREEWALKER_FILTER_FUNCTION_ONLY
```
    Indicates that the filter to be used by the TreeWalker has to be a function (so no object with a method acceptNode(..) is supported).
  - JS_TYPE_ACCEPTS_ARBITRARY_VALUES
```
public static final BrowserVersionFeatures JS_TYPE_ACCEPTS_ARBITRARY_VALUES
```
    Setting the property align to arbitrary values is allowed.
  - JS_VALIGN_CONVERTS_TO_LOWERCASE
```
public static final BrowserVersionFeatures JS_VALIGN_CONVERTS_TO_LOWERCASE
```
    Setting the property valign converts to lowercase.
  - JS_WEAK_SET
```
public static final BrowserVersionFeatures JS_WEAK_SET
```
    Indicates that WeakSet is supported.
  - JS_WIDTH_HEIGHT_ACCEPTS_ARBITRARY_VALUES
```
public static final BrowserVersionFeatures JS_WIDTH_HEIGHT_ACCEPTS_ARBITRARY_VALUES
```
    Setting the property width/height to arbitrary values is allowed.
  - JS_WINDOW_ACTIVEXOBJECT_HIDDEN
```
public static final BrowserVersionFeatures JS_WINDOW_ACTIVEXOBJECT_HIDDEN
```
    The window.ActiveXObject is special in IE http://msdn.microsoft.com/en-us/library/ie/dn423948%28v=vs.85%29.aspx.
  - JS_WINDOW_CHANGE_OPENER_ONLY_WINDOW_OBJECT
```
public static final BrowserVersionFeatures JS_WINDOW_CHANGE_OPENER_ONLY_WINDOW_OBJECT
```
    Changing the opener of a window to something not null and not a window is not valid.
  - JS_WINDOW_COMPUTED_STYLE_PSEUDO_ACCEPT_WITHOUT_COLON
```
public static final BrowserVersionFeatures JS_WINDOW_COMPUTED_STYLE_PSEUDO_ACCEPT_WITHOUT_COLON
```
    window.getComputedStyle works with pseudo selectors without colon in front.
  - JS_WINDOW_FORMFIELDS_ACCESSIBLE_BY_NAME
```
public static final BrowserVersionFeatures JS_WINDOW_FORMFIELDS_ACCESSIBLE_BY_NAME
```
    window.name returns also form fields (e.g. input, textarea).
  - JS_WINDOW_FRAMES_ACCESSIBLE_BY_ID
```
public static final BrowserVersionFeatures JS_WINDOW_FRAMES_ACCESSIBLE_BY_ID
```
    Support for accessing the frame of a window by id additionally to using the name.
  - JS_WINDOW_FRAME_BY_ID_RETURNS_WINDOW
```
public static final BrowserVersionFeatures JS_WINDOW_FRAME_BY_ID_RETURNS_WINDOW
```
    window..frames['id'] returns the frame window instead of the frame element.
  - JS_WINDOW_INSTALL_TRIGGER_NULL
```
public static final BrowserVersionFeatures JS_WINDOW_INSTALL_TRIGGER_NULL
```
    Javascript InstallTrigger property set to null.
  - JS_WINDOW_OUTER_INNER_HEIGHT_DIFF_131
```
public static final BrowserVersionFeatures JS_WINDOW_OUTER_INNER_HEIGHT_DIFF_131
```
    Difference of window.outer/inner height is 131.
  - JS_WINDOW_OUTER_INNER_HEIGHT_DIFF_138
```
public static final BrowserVersionFeatures JS_WINDOW_OUTER_INNER_HEIGHT_DIFF_138
```
    Difference of window.outer/inner height is 138.
  - JS_WINDOW_OUTER_INNER_HEIGHT_DIFF_86
```
public static final BrowserVersionFeatures JS_WINDOW_OUTER_INNER_HEIGHT_DIFF_86
```
    Difference of window.outer/inner height is 86.
  - JS_WINDOW_OUTER_INNER_HEIGHT_DIFF_91
```
public static final BrowserVersionFeatures JS_WINDOW_OUTER_INNER_HEIGHT_DIFF_91
```
    Difference of window.outer/inner height is 91.
  - JS_WINDOW_SELECTION_NULL_IF_INVISIBLE
```
public static final BrowserVersionFeatures JS_WINDOW_SELECTION_NULL_IF_INVISIBLE
```
    Window.getSelection returns null, if the window is not visible.
  - JS_WINDOW_TOP_WRITABLE
```
public static final BrowserVersionFeatures JS_WINDOW_TOP_WRITABLE
```
    Window.top property is writable.
  - JS_WORKER_IMPORT_SCRIPTS_ACCEPTS_ALL
```
public static final BrowserVersionFeatures JS_WORKER_IMPORT_SCRIPTS_ACCEPTS_ALL
```
    Method importScripts does not check the content type for js.
  - JS_XML
```
public static final BrowserVersionFeatures JS_XML
```
    Supports XML.
  - JS_XML_GET_ELEMENTS_BY_TAG_NAME_LOCAL
```
public static final BrowserVersionFeatures JS_XML_GET_ELEMENTS_BY_TAG_NAME_LOCAL
```
    XMLDocument: .getElementsByTagName() to search the nodes by their local name.
  - JS_XML_GET_ELEMENT_BY_ID__ANY_ELEMENT
```
public static final BrowserVersionFeatures JS_XML_GET_ELEMENT_BY_ID__ANY_ELEMENT
```
    XMLDocument: .getElementById() to return any element, not HTML specifically.
  - JS_XML_SERIALIZER_BLANK_BEFORE_SELF_CLOSING
```
public static final BrowserVersionFeatures JS_XML_SERIALIZER_BLANK_BEFORE_SELF_CLOSING
```
    Indicates that new XMLSerializer().serializeToString(..) inserts a blank before self-closing a tag.
  - JS_XML_SERIALIZER_HTML_DOCUMENT_FRAGMENT_ALWAYS_EMPTY
```
public static final BrowserVersionFeatures JS_XML_SERIALIZER_HTML_DOCUMENT_FRAGMENT_ALWAYS_EMPTY
```
    Indicates that new XMLSerializer().serializeToString(..) called with a document fragment created by an HTMLPage always returns ''.
  - JS_XML_SERIALIZER_ROOT_CDATA_AS_ESCAPED_TEXT
```
public static final BrowserVersionFeatures JS_XML_SERIALIZER_ROOT_CDATA_AS_ESCAPED_TEXT
```
    Indicates that XMLSerializer.serializeToString(..) serializes a single CDataSection as escaped text instead of <![CDATA[xxx]]>.
  - JS_XML_SUPPORT_VIA_ACTIVEXOBJECT
```
public static final BrowserVersionFeatures JS_XML_SUPPORT_VIA_ACTIVEXOBJECT
```
    Indicates that the browser uses the ActiveXObject for implementing XML support.
  - JS_XSLT_TRANSFORM_INDENT
```
public static final BrowserVersionFeatures JS_XSLT_TRANSFORM_INDENT
```
    XSLTProcessor.transformToDocument supports output indent attribute.
  - KEYBOARD_EVENT_SPECIAL_KEYPRESS
```
public static final BrowserVersionFeatures KEYBOARD_EVENT_SPECIAL_KEYPRESS
```
    With special keys [in .type(int)], should we trigger onkeypress event or not.
  - KEYGEN_AS_BLOCK
```
public static final BrowserVersionFeatures KEYGEN_AS_BLOCK
```
    Handle <keygen> as <block>.
  - META_X_UA_COMPATIBLE
```
public static final BrowserVersionFeatures META_X_UA_COMPATIBLE
```
    Indicates that the browser considers the meta X-UA-Compatible when determining compatibility/quirks mode.
  - MULTICOL_BLOCK
```
public static final BrowserVersionFeatures MULTICOL_BLOCK
```
    The default display style of multicol is 'block'.
  - PAGE_SELECTION_RANGE_FROM_SELECTABLE_TEXT_INPUT
```
public static final BrowserVersionFeatures PAGE_SELECTION_RANGE_FROM_SELECTABLE_TEXT_INPUT
```
  - QUERYSELECTORALL_NOT_IN_QUIRKS
```
public static final BrowserVersionFeatures QUERYSELECTORALL_NOT_IN_QUIRKS
```
    Indicates .querySelectorAll() and .querySelector() is not supported in quirks mode.
  - QUERYSELECTOR_CSS3_PSEUDO_REQUIRE_ATTACHED_NODE
```
public static final BrowserVersionFeatures QUERYSELECTOR_CSS3_PSEUDO_REQUIRE_ATTACHED_NODE
```
    IE throws a syntax error if a css3 pseudo selector is used on a detached node.
  - RESETINPUT_DEFAULT_VALUE_IF_VALUE_NOT_DEFINED
```
public static final BrowserVersionFeatures RESETINPUT_DEFAULT_VALUE_IF_VALUE_NOT_DEFINED
```
    Set the value attribute of a reset input to 'Reset' if no value attribute specified.
  - SLOT_CONTENTS
```
public static final BrowserVersionFeatures SLOT_CONTENTS
```
    The default display style of slot is 'content'.
  - STYLESHEET_ADD_RULE_RETURNS_POS
```
public static final BrowserVersionFeatures STYLESHEET_ADD_RULE_RETURNS_POS
```
    Method addRule returns the rule position instead of -1.
  - STYLESHEET_HREF_EMPTY_IS_NULL
```
public static final BrowserVersionFeatures STYLESHEET_HREF_EMPTY_IS_NULL
```
    Indicates that the href property for a <link rel="stylesheet" type="text/css" href="" /> (href empty) is null.
  - SUBMITINPUT_DEFAULT_VALUE_IF_VALUE_NOT_DEFINED
```
public static final BrowserVersionFeatures SUBMITINPUT_DEFAULT_VALUE_IF_VALUE_NOT_DEFINED
```
    Set the value attribute of a submit input to 'Submit Query' if no value attribute specified.
  - SVG_UNKNOWN_ARE_DOM
```
public static final BrowserVersionFeatures SVG_UNKNOWN_ARE_DOM
```
    Indicates that unknown tags inside an SVG element are handled as DOM elements, not SVG elements.
  - URL_ABOUT_BLANK_HAS_BLANK_PATH
```
public static final BrowserVersionFeatures URL_ABOUT_BLANK_HAS_BLANK_PATH
```
    Indicates, that the pathname for the url 'blank' is empty; instead of 'blank'.
  - URL_AUTH_CREDENTIALS
```
public static final BrowserVersionFeatures URL_AUTH_CREDENTIALS
```
    Indicates, that the browser supports username and password as part of the url (e.g. http://john.smith:secret@localhost).
  - URL_IGNORE_SPECIAL
```
public static final BrowserVersionFeatures URL_IGNORE_SPECIAL
```
    The protocol setter does not check for special protocols.
  - URL_MINIMAL_QUERY_ENCODING
```
public static final BrowserVersionFeatures URL_MINIMAL_QUERY_ENCODING
```
    Replace only ' ' with %20 when encode the query part of an url.
  - URL_MISSING_SLASHES
```
public static final BrowserVersionFeatures URL_MISSING_SLASHES
```
    Handles missing slashes.
  - WEBSOCKET_ORIGIN_SET
```
public static final BrowserVersionFeatures WEBSOCKET_ORIGIN_SET
```
    Set the origin property for web socket events.
  - WINDOW_EXECUTE_EVENTS
```
public static final BrowserVersionFeatures WINDOW_EXECUTE_EVENTS
```
    Execute window events.
  - XHR_ALL_RESPONSE_HEADERS_APPEND_SEPARATOR
```
public static final BrowserVersionFeatures XHR_ALL_RESPONSE_HEADERS_APPEND_SEPARATOR
```
    XMLHttpRequest.getAllResponseHeaders() has a trailing separator.
  - XHR_ALL_RESPONSE_HEADERS_SEPARATE_BY_LF
```
public static final BrowserVersionFeatures XHR_ALL_RESPONSE_HEADERS_SEPARATE_BY_LF
```
    XMLHttpRequest.getAllResponseHeaders() uses only Lf as separator.
  - XHR_FIRE_STATE_OPENED_AGAIN_IN_ASYNC_MODE
```
public static final BrowserVersionFeatures XHR_FIRE_STATE_OPENED_AGAIN_IN_ASYNC_MODE
```
    XMLHttpRequest triggers the opened event at the beginning of the send method again.
  - XHR_HANDLE_SYNC_NETWORK_ERRORS
```
public static final BrowserVersionFeatures XHR_HANDLE_SYNC_NETWORK_ERRORS
```
    Indicates that the Browser handles async and sync network errors the same way.
  - XHR_LENGTH_COMPUTABLE
```
public static final BrowserVersionFeatures XHR_LENGTH_COMPUTABLE
```
    ProgressEvent.lengthComputable is true.
  - XHR_LOAD_ALWAYS_AFTER_DONE
```
public static final BrowserVersionFeatures XHR_LOAD_ALWAYS_AFTER_DONE
```
    XMLHttpRequest triggers the load events also if the abort was signaled.
  - XHR_LOAD_START_ASYNC
```
public static final BrowserVersionFeatures XHR_LOAD_START_ASYNC
```
    XMLHttpRequest triggers the load start event async.
  - XHR_NO_CROSS_ORIGIN_TO_ABOUT
```
public static final BrowserVersionFeatures XHR_NO_CROSS_ORIGIN_TO_ABOUT
```
    A cross origin request to about:blank is not allowed.
  - XHR_OPEN_ALLOW_EMTPY_URL
```
public static final BrowserVersionFeatures XHR_OPEN_ALLOW_EMTPY_URL
```
    Indicates if an empty url is allowed as url param for the open method.
  - XHR_PROGRESS_ON_NETWORK_ERROR_ASYNC
```
public static final BrowserVersionFeatures XHR_PROGRESS_ON_NETWORK_ERROR_ASYNC
```
    XMLHttpRequest triggers an additional progress event if a network error was thrown in async mode.
  - XHR_RESPONSE_TEXT_EMPTY_UNSENT
```
public static final BrowserVersionFeatures XHR_RESPONSE_TEXT_EMPTY_UNSENT
```
    If state unsent the response text is empty even if the response type is wrong.
  - XHR_RESPONSE_TYPE_THROWS_UNSENT
```
public static final BrowserVersionFeatures XHR_RESPONSE_TYPE_THROWS_UNSENT
```
    Setting the responseType throws in state unsent.
  - XHR_SEND_IGNORES_BLOB_MIMETYPE_AS_CONTENTTYPE
```
public static final BrowserVersionFeatures XHR_SEND_IGNORES_BLOB_MIMETYPE_AS_CONTENTTYPE
```
    Indicates if the XMLHttpRequest.send() method will send the mimeType of the blob as Content-Type header.
  - XHR_SEND_NETWORK_ERROR_IF_ABORTED
```
public static final BrowserVersionFeatures XHR_SEND_NETWORK_ERROR_IF_ABORTED
```
    Indicates if the XMLHttpRequest.send() method will throw if aborted.
  - XHR_USE_CONTENT_CHARSET
```
public static final BrowserVersionFeatures XHR_USE_CONTENT_CHARSET
```
    Indicates that the content charset is used for response parsing.
  - XPATH_SELECTION_NAMESPACES
```
public static final BrowserVersionFeatures XPATH_SELECTION_NAMESPACES
```
    Indicates that the 'SelectionNamespaces' property is supported by XPath expressions.
- Method Detail
  - values
```
public static BrowserVersionFeatures[] values()
```
    Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
    for (BrowserVersionFeatures c : BrowserVersionFeatures.values()) System.out.println(c);
    Returns:
    
    an array containing the constants of this enum type, in the order they are declared
  - valueOf
```
public static BrowserVersionFeatures valueOf(java.lang.String name)
```
    Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
    
    Parameters:
    
    name - the name of the enum constant to be returned.
    
    Returns:
    
    the enum constant with the specified name
    
    Throws:
    
    java.lang.IllegalArgumentException - if this enum type has no constant with the specified name
    
    java.lang.NullPointerException - if the argument is null

Enum BrowserVersionFeatures

Enum Constant Summary

Method Summary

Methods inherited from class java.lang.Enum

Methods inherited from class java.lang.Object

Enum Constant Detail

ANCHOR_EMPTY_HREF_NO_FILENAME

ANCHOR_SEND_PING_REQUEST

CONNECTION_KEEP_ALIVE_IE

CONTENT_SECURITY_POLICY_IGNORED

CSS_BACKGROUND_INITIAL

CSS_BACKGROUND_RGBA

CSS_CSSTEXT_FF_STYLE

CSS_CSSTEXT_IE_STYLE

CSS_DIALOG_NONE

CSS_DISPLAY_BLOCK

CSS_DISPLAY_BLOCK2

CSS_LENGTH_INITIAL

CSS_NOSCRIPT_DISPLAY_INLINE

CSS_OUTLINE_WIDTH_UNIT_NOT_REQUIRED

CSS_PROGRESS_DISPLAY_INLINE

CSS_PSEUDO_SELECTOR_MS_PLACEHHOLDER

CSS_PSEUDO_SELECTOR_PLACEHOLDER_SHOWN

CSS_RP_DISPLAY_NONE

CSS_RT_DISPLAY_RUBY_TEXT_ALWAYS

CSS_SET_NULL_THROWS

CSS_STYLE_PROP_DISCONNECTED_IS_EMPTY

CSS_STYLE_PROP_FONT_DISCONNECTED_IS_EMPTY

CSS_VERTICAL_ALIGN_SUPPORTS_AUTO

CSS_ZINDEX_TYPE_INTEGER

DIALOGWINDOW_REFERER

DOM_NORMALIZE_REMOVE_CHILDREN

EVENT_BEFORE_UNLOAD_RETURN_VALUE_IS_HTML5_LIKE

EVENT_CONTEXT_MENU_HAS_DETAIL_1

EVENT_FOCUS_FOCUS_IN_BLUR_OUT

EVENT_FOCUS_IN_FOCUS_OUT_BLUR

EVENT_FOCUS_ON_LOAD

EVENT_HANDLER_NULL_RETURN_IS_MEANINGFUL

EVENT_MOUSE_ON_DISABLED

EVENT_ONANIMATION_DOCUMENT_CREATE_NOT_SUPPORTED

EVENT_ONCHANGE_AFTER_ONCLICK

EVENT_ONCLICK_FOR_SELECT_ONLY

EVENT_ONCLICK_POINTEREVENT_DETAIL_0

EVENT_ONCLICK_USES_POINTEREVENT

EVENT_ONCLOSE_DOCUMENT_CREATE_NOT_SUPPORTED

EVENT_ONDOUBLECLICK_USES_POINTEREVENT

EVENT_ONLOAD_INTERNAL_JAVASCRIPT

EVENT_ONMESSAGE_DEFAULT_DATA_NULL

EVENT_ONMOUSEDOWN_FOR_SELECT_OPTION_TRIGGERS_ADDITIONAL_DOWN_FOR_SELECT

EVENT_ONMOUSEDOWN_NOT_FOR_SELECT_OPTION

EVENT_ONMOUSEOVER_FOR_DISABLED_OPTION

EVENT_ONMOUSEOVER_NEVER_FOR_SELECT_OPTION

EVENT_ONMOUSEUP_FOR_SELECT_OPTION_TRIGGERS_ADDITIONAL_UP_FOR_SELECT

EVENT_ONMOUSEUP_NOT_FOR_SELECT_OPTION

EVENT_ONPOPSTATE_DOCUMENT_CREATE_NOT_SUPPORTED

EVENT_TYPE_BEFOREUNLOADEVENT

EVENT_TYPE_HASHCHANGEEVENT

EVENT_TYPE_MOUSEWHEELEVENT

EVENT_TYPE_POINTEREVENT

EVENT_TYPE_PROGRESSEVENT

EVENT_TYPE_TEXTEVENT

EVENT_TYPE_WHEELEVENT

FOCUS_BODY_ELEMENT_AT_START

FORMFIELD_REACHABLE_BY_NEW_NAMES

FORMFIELD_REACHABLE_BY_ORIGINAL_NAME

FORM_FORM_ATTRIBUTE_SUPPORTED

FORM_IGNORE_REL_NOREFERRER

FORM_PARAMETRS_NOT_SUPPORTED_FOR_IMAGE

FORM_SUBMISSION_DOWNLOWDS_ALSO_IF_ONLY_HASH_CHANGED

FORM_SUBMISSION_HEADER_CACHE_CONTROL_MAX_AGE

FORM_SUBMISSION_HEADER_CACHE_CONTROL_NO_CACHE

FORM_SUBMISSION_HEADER_ORIGIN

FORM_SUBMISSION_URL_WITHOUT_HASH

FRAME_LOCATION_ABOUT_BLANK_FOR_ABOUT_SCHEME

HTMLABBREVIATED

HTMLALLCOLLECTION_DO_NOT_CONVERT_STRINGS_TO_NUMBER

HTMLALLCOLLECTION_INTEGER_INDEX

HTMLALLCOLLECTION_NO_COLLECTION_FOR_MANY_HITS

HTMLALLCOLLECTION_NULL_IF_NAMED_ITEM_NOT_FOUND

HTMLBASEFONT_END_TAG_FORBIDDEN