Comparison of layout engines (DOM)

The following tables compare DOM compatibility and support for a number of layout engines. Please see the individual products' articles for further information. This article is not all-inclusive or necessarily up-to-date. Unless otherwise specified in footnotes, comparisons are based on The Stable versions without any add-ons, extensions or external programs.

For features that are fully supported (based on DOM Level 2 or DOM Level 3 modules that are under W3C Recommendation), an exact version number is given if it is certain that the feature was added in such version; otherwise, a rough version number is given (e.g. < 2.0 means that the feature was supported since version 2.0 or below). DOM Level 0 and DOM Level 3 modules that are still under development are not included.

General overview

	Trident	Tasman	Gecko	WebCore	KHTML	Presto	iCab
DOM1
DOM2
DOM3

Core (Fundamental)

The interfaces within this section are considered fundamental, and must be fully implemented by all conforming implementations of the DOM, including all HTML DOM implementations.

		Trident	Tasman	Gecko	WebCore	KHTML	Presto
colspan="9" \| Exception DOMException
DOM1	`code`	?	?		?	?
colspan="9" \| Interface DOMStringList
DOM3	`length`	rowspan="3"	rowspan="3"	rowspan="3"	rowspan="3"	?	rowspan="3"
	`contains()`	?	?
	`item()`	?	?
colspan="9" \| Interface NameList
DOM3	`length`	rowspan="5"	rowspan="5"	rowspan="5"	rowspan="5"	rowspan="5"	rowspan="5"
	`getName()`
	`getNamespaceURI()`
	`contains()`
	`containsNS()`
colspan="9" \| Interface DOMImplementationList
DOM3	`length`	rowspan="2"	rowspan="2"	rowspan="2"	rowspan="2"	rowspan="2"	rowspan="2"
DOM3	`item()`
colspan="9" \| Interface DOMImplementationSource
DOM3	`getDOMImplementation()`	rowspan="2"	rowspan="2"	rowspan="2"	rowspan="2"	rowspan="2"	rowspan="2"
DOM3	`getDOMImplementationList()`
colspan="9" \| Interface DOMImplementation
DOM1	`hasFeature()`		?			?
DOM2	`createDocumentType()`	rowspan="2"	rowspan="2"	rowspan="2"	rowspan="2"	?	rowspan="2"
DOM2	`createDocument()`	?	?
DOM3	`getFeature()`					?
colspan="9" \| Interface DocumentFragment
DOM1	`(no properties)`				?	?
colspan="9" \| Interface Document
DOM1	`doctype`				rowspan="12"	?
	`implementation`				?		?
	`documentElement`				?		?
	`createElement()`				?		?
	`createDocumentFragment()`				?		?
	`createTextNode()`				?		?
	`createComment()`				?		?
	`createCDATASection()`				?		?
	`createProcessingInstruction()`		?		?		?
	`createAttribute()`				?		?
	`createEntityReference()`		?		?		?
	`getElementsByTagName()`				?		?
DOM2	`importNode()`			rowspan="5"	rowspan="5"	?
	`createElementNS()`			?		?
	`createAttributeNS()`			?		?
	`getElementsByTagNameNS()`			?		?
	`GetElementById()`			?		?
DOM3	`inputEncoding`	rowspan="10"	rowspan="10"	rowspan="10"		?
	`xmlEncoding`		?		?
	`xmlStandalone`		?		?
	`xmlVersion`		?		?
	`domConfig`		?		?
	`strictErrorChecking`		?		?
	`documentURI`		?		?
	`adoptNode()`		?		?
	`normalizeDocument()`		?		?
	`renameNode()`		?		?
colspan="9" \| Interface Node
DOM1	`nodeName`		rowspan="17"		rowspan="17"	?	rowspan="17"
	`nodeValue`			?	?
	`nodeType`			?	?
	`parentNode`			?	?
	`childNodes`			?	?
	`firstChild`			?	?
	`lastChild`			?	?
	`previousSibling`			?	?
	`nextSibling`			?	?
	`attributes`			?	?
	`ownerDocument`			?	?
	`insertBefore()`			?	?
	`replaceChild()`			?	?
	`removeChild()`			?	?
	`appendChild()`			?	?
	`hasChildNodes()`			?	?
	`cloneNode()`			?	?
DOM2	`namespaceURI`		rowspan="5"	rowspan="5"	rowspan="5"	?
	`prefix`		?		?
	`localName`		?		?
	`isSupported()`		?		?
	`hasAttributes()`		?		?
DOM3	`baseURI`		rowspan="11"		rowspan="11"	?
	`textContent`			?		?
	`compareDocumentPosition()`			?		?
	`isSameNode()`			?		?
	`lookupPrefix()`			?		?
	`isDefaultNamespace()`			?		?
	`lookupNamespaceURI()`			?		?
	`isEqualNode()`			?		?
	`getFeature()`			?		?
	`setUserData()`			?		?
	`getUserData()`			?		?
colspan="9" \| Interface NodeList
DOM1	`length`	rowspan="2"	rowspan="2"	rowspan="2"	rowspan="2"	?	rowspan="2"
DOM1	`item()`	?	?
colspan="9" \| Interface NamedNodeMap
DOM1	`length`	rowspan="5"	rowspan="5"	rowspan="5"	rowspan="5"	?	rowspan="5"
	`getNamedItem()`	?	?
	`setNamedItem()`	?	?
	`removeNamedItem()`	?	?
	`item()`	?	?
DOM2	`getNamedItemNS()`	rowspan="3"	rowspan="3"	rowspan="3"	rowspan="3"	?	rowspan="3"
	`setNamedItemNS()`	?	?
	`removeNamedItemNS()`	?	?
colspan="9" \| Interface CharacterData
DOM1	`data`	rowspan="7"	rowspan="7"	rowspan="7"	rowspan="7"	?	rowspan="7"
	`length`	?	?
	`substringData()`	?	?
	`appendData()`	?	?
	`insertData()`	?	?
	`deleteData()`	?	?
	`replaceData()`	?	?
colspan="9" \| Interface Attr
DOM1	`name`		?		rowspan="3"	?	rowspan="3"
	`specified`					?
	`value`		?		?	?
DOM2	`ownerElement`		?			?
DOM3	`schemaTypeInfo`	rowspan="2"	rowspan="2"	rowspan="2"	rowspan="2"	?	rowspan="2"
DOM3	`isId`	?	?
colspan="9" \| Interface Element
DOM1	`tagName`		rowspan="9"	rowspan="9"		?	rowspan="9"
	`getAttribute()`			?	?
	`setAttribute()`			?	?
	`removeAttribute()`			?	?
	`getAttributeNode()`			?	?
	`setAttributeNode()`			?	?
	`removeAttributeNode()`			?	?
	`getElementsByTagName()`			?	?
	`normalize()`			?	?
DOM2	`getAttributeNS()`	rowspan="8"		rowspan="8"	rowspan="8"	?	rowspan="8"
	`setAttributeNS()`		?	?
	`removeAttributeNS()`		?	?
	`getAttributeNodeNS()`		?	?
	`setAttributeNodeNS()`		?	?
	`getElementsByTagNameNS()`		?	?
	`hasAttribute()`		?	?
	`hasAttributeNS()`		?	?
DOM3	`schemaTypeInfo`	rowspan="4"	rowspan="4"	rowspan="4"	rowspan="4"	?	rowspan="4"
	`setIdAttribute()`	?	?
	`setIdAttributeNS()`	?	?
	`setIdAttributeNode()`	?	?
colspan="9" \| Interface Text
DOM1	`splitText()`					?
DOM3	`isElementContentWhitespace`	rowspan="3"	rowspan="3"	rowspan="3"	rowspan="3"	?
	`wholeText`	?		?
	`replaceWholeText()`	?		?
colspan="9" \| Interface Comment
DOM1	`(no properties)`					?
colspan="9" \| Interface TypeInfo
DOM3	`typeName`	rowspan="3"	rowspan="3"	rowspan="3"	rowspan="3"	rowspan="3"	rowspan="3"
	`typeNamespace`
	`isDerivedFrom()`
colspan="9" \| Interface UserDataHandler
DOM3	`handle()`
colspan="9" \| Interface DOMError
DOM3	`severity`	rowspan="6"	rowspan="6"	rowspan="6"	rowspan="6"	rowspan="6"
	`message`
	`type`
	`relatedException`
	`relatedData`
	`location`
colspan="9" \| Interface DOMErrorHandler
DOM3	`handleError()`
colspan="9" \| Interface DOMLocator
DOM3	`lineNumber`	rowspan="6"	rowspan="6"	rowspan="6"	rowspan="6"	rowspan="6"	rowspan="6"
	`columnNumber`
	`byteOffset`
	`utf16Offset`
	`relatedNode`
	`uri`
colspan="9" \| Interface DOMConfiguration
DOM3	`parameterNames`	rowspan="4"	rowspan="4"	rowspan="4"	rowspan="4"	?	rowspan="4"
	`setParameter()`	?	?
	`getParameter()`	?	?
	`canSetParameter()`	?	?

Trident Core (Fundamental) notes

getElementById() — returns elements with name attribute set to value being found, not only id. Present in IE7. 1
getAttribute(), setAttribute(), removeAttribute() — returns, sets, and removes, respectively, the corresponding DOM property instead of the string value of the attribute. For example, element.getAttribute('onclick') returns element.onclick, which is a reference to a function and not a string. Another example: element.removeAttribute('class') does not work as expected; element.removeAttribute('className') must be called instead. getAttribute and setAttribute with 'style' as their parameter don't work, but the inline style can be retrieved by setting the non-standard iFlags parameter to 2 (i.e. by calling element.getAttribute('style',2)), or accessed using the Node.style property. 2
AttributeNode.specified — Does not set specified to true if ownerElement should be null 3.
Node.isSameNode — isSameNode is only supported for XML documents, not HTML ones.

Gecko Core (Fundamental) notes

insertBefore(), replaceChild(), removeChild(), appendChild() — Fails on Attr nodes 4. appendChild does not work as expected for DocumentFragment nodes prior to 1.8 5.
createEntityReference() — Supported, but returns null when the method is checked 6.
AttributeNode.specified — Does not set specified to true if ownerElement is null 7. As it also does not create Attribute Nodes for default values specified in the DTD, it renders this property absolutely useless.

Presto Core (Fundamental) notes

getElementById() — returns elements with name attribute set to value being found, not only id 8.
URI attribute value — In versions prior to Opera 9, all URI attribute values are resolved to full URI. Hence the value from getAttribute() and getAttributeNode() could be wrong if relative URIs are used.
Attributes that are not supported in the layout engine are still parsed and available through DOM. E.g. char and charoff are available under .ch and .chOff.
In Opera 8.54 methods DOMImplementation.createDocument and DOMDocument.createElementNS both fail to accept any non-empty namespace URI. They work in Opera 9 Beta 2 and they may also have worked before (somebody with Opera 8, please check.) The symptom is that the namespaceURI property is null/empty and serialization gives wrong result.

Core (Extended)

The interfaces defined here form part of the DOM Core specification, but objects that expose these interfaces will never be encountered in a DOM implementation that deals only with HTML.

		Gecko	KHTML
colspan="9" \| Interface CDATASection
DOM1	`(no properties)`		?
colspan="9" \| Interface DocumentType
DOM1	`name`		?
	`entities`	9	?
	`notations`	10	?
DOM2	`publicId`		?
	`systemId`		?
	`internalSubset`		?
colspan="9" \| Interface Notation
DOM1	`publicId`		?
DOM1	`systemId`		?
colspan="9" \| Interface Entity
DOM1	`publicId`		?
	`systemId`		?
	`notationName`		?
DOM3	`inputEncoding`		?
	`xmlEncoding`		?
	`xmlVersion`		?
colspan="9" \| Interface EntityReference
DOM1	`(no properties)`		?
colspan="9" \| Interface ProcessingInstruction
DOM1	`target`		?
DOM1	`data`		?

HTML

The interfaces found within this section are not mandatory. This section extends the DOM Core API to describe objects and methods specific to HTML documents, and XHTML documents. In general, the functionality needed to manipulate hierarchical document structures, elements, and attributes will be found in the core section; functionality that depends on the specific elements defined in HTML will be found in this section. Elements deprecated since HTML 4.01 are not listed. Some elements and attributes listed here are deprecated in XHTML 1.1. For example, presentation attributes, image maps, frames and targets.

		Trident	Tasman	Gecko	WebCore	KHTML	Presto
colspan="9" \| Interface HTMLCollection
DOM1	`length`	rowspan="3"	?		?	?
	`item()`	?		?	?		?
	`namedItem()`	?		?	?		?
colspan="9" \| Interface HTMLOptionsCollection
DOM2	`length`	?	?		?	?
	`item()`	?	?		?	?
	`namedItem()`	?	?		?	?
colspan="9" \| Interface HTMLDocument
DOM1	`title`				?	?
	`referrer`				?	?
	`domain`				?	?
	`URL`				?	?
	`body`				?	?
	`images`				?	?
	`applets`				?	?
	`links`				?	?
	`forms`				?	?
	`anchors`				?	?
	`cookie`				?	?
	`open()`				?	?
	`close()`				?	?
	`write()`				?	?
	`writeln()`				?	?
	`getElementsByName()`		?		?	?
colspan="9" \| Interface HTMLElement
DOM1	`id`				?	?
	`title`				?	?
	`lang`				?	?
	`dir`				?	?
	`className`				?	?
colspan="9" \| Interface HTMLHtmlElement
DOM1	`version`		?		?	?
colspan="9" \| Interface HTMLHeadElement
DOM1	`profile`		?		?	?
colspan="9" \| Interface HTMLLinkElement
DOM1	`disabled`				?	?
	`charset`				?	?
	`href`				?	?
	`hreflang`				?	?
	`media`				?	?
	`rel`				?	?
	`rev`				?	?
	`target`				?	?
	`type`				?	?
colspan="9" \| Interface HTMLTitleElement
DOM1	`text`				?	?
colspan="9" \| Interface HTMLMetaElement
DOM1	`content`				?	?
	`httpEquiv`				?	?
	`name`				?	?
	`scheme`		?		?	?
colspan="9" \| Interface HTMLBaseElement
DOM1	`href`				?	?
DOM1	`target`				?	?
colspan="9" \| Interface HTMLStyleElement
DOM2	`disabled`	?	?		?	?
	`media`				?	?
	`type`				?	?
colspan="9" \| Interface HTMLBodyElement
DOM1	`aLink`				?	?
	`background`				?	?
	`bgColor`				?	?
	`link`				?	?
	`text`				?	?
	`vLink`				?	?
colspan="9" \| Interface HTMLFormElement
DOM1	`elements`				?	?
	`length`				?	?
	`name`				?	?
	`acceptEncoding`	?	?		?	?
	`action`				?	?
	`enctype`				?	?
	`method`				?	?
	`target`				?	?
	`submit()`				?	?
	`reset()`				?	?
colspan="9" \| Interface HTMLSelectElement
DOM1	`type`				?	?
	`selectedIndex`				?	?
	`value`				?	?
	`length`				?	?
	`form`	?	?		?	?
	`options`				?	?
	`disabled`				?	?
	`multiple`				?	?
	`name`				?	?
	`size`				?	?
	`tabIndex`	?	?		?	?
	`add()`	?	?		?	?
	`remove()`	?	?		?	?
	`blur()`				?	?
	`focus()`				?	?
colspan="9" \| Interface HTMLOptGroupElement
DOM1	`disabled`	?	?		?	?
DOM1	`label`				?	?
colspan="9" \| Interface HTMLOptionElement
DOM1	`form`				?	?
	`defaultSelected`				?	?
	`text`				?	?
	`index`	?	?		?	?
	`disabled`	?	?		?	?
	`label`				?	?
	`selected`				?	?
	`value`				?	?
colspan="9" \| Interface HTMLInputElement
DOM1	`defaultValue`				?	?
	`defaultChecked`				?	?
	`form`				?	?
	`accept`	?	?		?	?
	`accesskey`	?	?		?	?
	`align`	?	?		?	?
	`alt`	?	?		?	?
	`checked`				?	?
	`disabled`				?	?
	`maxLength`				?	?
	`name`				?	?
	`readOnly`				?	?
	`size`				?	?
	`src`				?	?
	`tabIndex`	?	?		?	?
	`type`				?	?
	`useMap`	?	?		?	?
	`value`				?	?
	`blur()`				?	?
	`focus()`				?	?
	`select()`				?	?
	`click()`				?	?
colspan="9" \| Interface HTMLTextAreaElement
DOM1	`defaultValue`				?	?
	`form`				?	?
	`accesskey`	?	?		?	?
	`cols`				?	?
	`disabled`				?	?
	`name`				?	?
	`readOnly`				?	?
	`rows`				?	?
	`tabIndex`	?	?		?	?
	`type`				?	?
	`value`				?	?
	`blur()`				?	?
	`focus()`				?	?
	`select()`				?	?
colspan="9" \| Interface HTMLButtonElement
DOM1	`form`				?	?
	`accesskey`	?	?		?	?
	`disabled`				?	?
	`name`				?	?
	`tabIndex`	?	?		?	?
	`type`				?	?
	`value`				?	?
colspan="9" \| Interface HTMLLabelElement
DOM1	`form`				?	?
	`accesskey`				?	?
	`htmlFor`				?	?
colspan="9" \| Interface HTMLFieldSetElement
DOM1	`form`				?	?
colspan="9" \| Interface HTMLLegendElement
DOM1	`form`				?	?
	`accesskey`	?	?		?	?
	`align`				?	?
colspan="9" \| Interface HTMLUListElement
DOM1	`compact`				?	?
DOM1	`type`				?	?
colspan="9" \| Interface HTMLOListElement
DOM1	`compact`				?	?
	`start`				?	?
	`type`				?	?
colspan="9" \| Interface HTMLDListElement
DOM1	`compact`				?	?
colspan="9" \| Interface HTMLLIElement
DOM1	`type`				?	?
DOM1	`value`				?	?
colspan="9" \| Interface HTMLDivElement
DOM1	`align`	?	?		?	?
colspan="9" \| Interface HTMLParagraphElement
DOM1	`align`	?	?		?	?
colspan="9" \| Interface HTMLHeadingElement
DOM1	`align`				?	?
colspan="9" \| Interface HTMLQuoteElement
DOM1	`cite`				?	?
colspan="9" \| Interface HTMLPreElement
DOM1	`width`	?	?		?	?
colspan="9" \| Interface HTMLBRElement
DOM1	`clear`				?	?
colspan="9" \| Interface HTMLHRElement
DOM1	`align`				?	?
	`noShade`				?	?
	`size`				?	?
	`width`				?	?
colspan="9" \| Interface HTMLModElement
DOM1	`cite`		?		?	?
DOM1	`dateTime`	?	?		?	?
colspan="9" \| Interface HTMLAnchorElement
DOM1	`accesskey`	?	?		?	?
	`charset`				?	?
	`coords`				?	?
	`href`				?	?
	`hreflang`				?	?
	`name`				?	?
	`rel`				?	?
	`rev`				?	?
	`shape`				?	?
	`tabIndex`	?	?		?	?
	`target`				?	?
	`type`				?	?
	`blur()`	?	?		?	?
	`focus()`	?	?		?	?
colspan="9" \| Interface HTMLImageElement
DOM1	`name`				?	?
	`align`				?	?
	`alt`				?	?
	`border`				?	?
	`height`				?	?
	`hspace`				?	?
	`isMap`				?	?
	`longDesc`		?		?	?
	`src`				?	?
	`useMap`				?	?
	`vspace`				?	?
	`width`				?	?
colspan="9" \| Interface HTMLObjectElement
DOM1	`form`	?	?		?	?
	`code`				?	?
	`align`				?	?
	`archive`	?	?		?	?
	`border`	?	?		?	?
	`codeBase`				?	?
	`codeType`				?	?
	`data`				?	?
	`declare`	?	?		?	?
	`height`				?	?
	`hspace`				?	?
	`name`				?	?
	`standby`	?	?		?	?
	`tabIndex`	?	?		?	?
	`type`				?	?
	`useMap`	?	?		?	?
	`vspace`				?	?
	`width`				?	?
DOM2	`contentDocument`				?	?
colspan="9" \| Interface HTMLParamElement
DOM1	`name`	?	?		?	?
	`type`	?	?		?	?
	`value`	?	?		?	?
	`valueType`		?		?	?
colspan="9" \| Interface HTMLMapElement
DOM1	`areas`				?	?
DOM1	`name`				?	?
colspan="9" \| Interface HTMLAreaElement
DOM1	`accesskey`	?	?		?	?
	`alt`				?	?
	`coords`				?	?
	`hrefs`	?	?		?	?
	`noHrefs`	?	?		?	?
	`shape`				?	?
	`tabIndex`	?	?		?	?
	`target`				?	?
colspan="9" \| Interface HTMLScriptElement
DOM1	`text`		0		?	?
	`htmlFor (reserved for future use)`				?	?
	`event (reserved for future use)`				?	?
	`charset`	?	?		?	?
	`defer`				?	?
	`src`				?	?
	`type`				?	?
	`target`	?	?		?	?
colspan="9" \| Interface HTMLTableElement
DOM1	`caption`				?	?
	`tHead`				?	?
	`tFoot`				?	?
	`rows`				?	?
	`tBodies`				?	?
	`align`				?	?
	`bgColor`				?	?
	`border`				?	?
	`cellPadding`					?
	`cellSpacing`				?	?
	`frame`				?	?
	`rules`				?	?
	`summary`				?	?
	`width`				?	?
	`createTHead()`				?	?
	`deleteTHead()`				?	?
	`createTFoot()`				?	?
	`deleteTFoot()`				?	?
	`createCaption()`				?	?
	`deleteCaption()`				?	?
	`insertRow()`				?	?
	`deleteRow()`				?	?
colspan="9" \| Interface HTMLTableCaptionElement
DOM1	`align`				?	?
colspan="9" \| Interface HTMLTableColElement
DOM1	`align`				?	?
	`ch`				?	?
	`chOff`				?	?
	`span`				?	?
	`vAlign`				?	?
	`width`				?	?
colspan="9" \| Interface HTMLTableSectionElement
DOM1	`align`				?	?
	`ch`				?	?
	`chOff`				?	?
	`vAlign`				?	?
	`rows`				?	?
	`insertRow()`				?	?
	`deleteRow()`				?	?
colspan="9" \| Interface HTMLTableRowElement
DOM1	`rowIndex`				?	?
	`sectionRowIndex`				?	?
	`cells`				?	?
	`align`				?	?
	`bgColor`				?	?
	`ch`				?	?
	`chOff`				?	?
	`vAlign`				?	?
	`insertCell()`				?	?
	`deleteCell()`				?	?
colspan="9" \| Interface HTMLTableCellElement
DOM1	`cellIndex`					?
	`abbr`				?	?
	`align`				?	?
	`axis`				?	?
	`bgColor`				?	?
	`ch`				?	?
	`chOff`				?	?
	`colSpan`				?	?
	`headers`				?	?
	`height`				?	?
	`noWrap`				?	?
	`rowSpan`				?	?
	`scope`	?	?		?	?
	`vAlign`				?	?
	`width`				?	?
colspan="9" \| Interface HTMLFrameSetElement
DOM1	`cols`				?	?
DOM1	`rows`				?	?
colspan="9" \| Interface HTMLFrameElement
DOM1	`frameBorder`				?	?
	`longDesc`				?	?
	`marginHeight`				?	?
	`marginWidth`				?	?
	`name`				?	?
	`noResize`	4.0			?	?
	`scrolling`				?	?
	`src`				?	?
DOM2	`contentDocument`				?	?
colspan="9" \| Interface HTMLIFrameSetElement
DOM1	`align`				?	?
	`frameBorder`	?	?		?	?
	`height`				?	?
	`longDesc`				?	?
	`marginHeight`				?	?
	`marginWidth`				?	?
	`name`				?	?
	`scrolling`				?	?
	`src`				?	?
	`width`				?	?
DOM2	`contentDocument`				?	?

Trident HTML notes

profile, href, background, action, cite, longDesc, codebase, data, src — Relative URL was not resolved to full URL.

WebCore HTML notes

cellIndex — Always return zero 11.

Presto HTML notes

text — Opera 8 and lower returned data at src, when it should return inline data instead.

Style (Style Sheets)

The interfaces found within this section are not mandatory. The interfaces in this section are base interfaces used to represent any type of style sheet.

		Tasman	WebCore	KHTML	Presto
colspan="9" \| Interface StyleSheet
DOM2	`type`	?	rowspan="7"	?
	`disabled`	?	?		?
	`ownerNode`	?	?		?
	`parentStyleSheet`	?	?		?
	`href`	?	?		?
	`title`	?	?		?
	`media`	?	?		?
colspan="9" \| Interface StyleSheetList
DOM2	`length`	?	rowspan="2"	?
DOM2	`item()`	?	?		?
colspan="9" \| Interface MediaList
DOM2	`mediaText`	?	rowspan="5"	?
	`length`	?	?		?
	`item()`	?	?		?
	`deleteMedium()`	?	?		?
	`appendMedium()`	?	?		?
colspan="9" \| Interface LinkStyle
DOM2	`sheet`	?		?
colspan="9" \| Interface DocumentStyle
DOM2	`styleSheets`	?		?

Trident Style (Style Sheets) notes

href — Relative URL is not resolved to full URL.
media — Returns string instead of MediaList.

Style (CSS Fundamental)

The interfaces within this section are considered fundamental CSS interfaces, and must be supported by all conforming implementations of the CSS module. These interfaces represent CSS style sheets specifically.

		Tasman	Gecko	WebCore	KHTML
colspan="9" \| Interface CSSStyleSheet
DOM2	`ownerRule`	?		?	?
	`cssRules`				?
	`insertRule()`				?
	`deleteRule()`				?
colspan="9" \| Interface StyleSheetList
DOM2	`length`	?		?	?
DOM2	`item()`	?		?	?
colspan="9" \| Interface CSSRuleList
DOM2	`length`	?		?	?
DOM2	`item()`	?		?	?
colspan="9" \| Interface CSSRule
DOM2	`type`	?		?	?
	`cssText`			?	?
	`parentStyleSheet`				?
	`parentRule`	?		?	?
colspan="9" \| Interface CSSStyleRule
DOM2	`selectorText`				?
DOM2	`style`	?		?	?
colspan="9" \| Interface CSSMediaRule
DOM2	`media`	?		?	?
	`cssRules`	?		?	?
	`insertRule()`	?		?	?
	`deleteRule()`	?		?	?
colspan="9" \| Interface CSSFontFaceRule
DOM2	`style`	?	12	?	?
colspan="9" \| Interface CSSPageRule
DOM2	`selectorText`	?	13	?	?
DOM2	`style`	?		?	?
colspan="9" \| Interface CSSImportRule
DOM2	`href`				?
	`media`	?		?	?
	`styleSheet`	?		?	?
colspan="9" \| Interface CSSCharsetRule
DOM2	`encoding`	?		?	?
colspan="9" \| Interface CSSUnknownRule
DOM2	`(no properties)`	?	14	?	?
colspan="9" \| Interface CSSStyleDeclaration
DOM2	`cssText`	?		?	?
	`length`	?		?	?
	`parentRule`	?		?	?
	`getPropertyValue()`				?
	`getPropertyCSSValue()`	?	15	?	?
	`removeProperty()`				?
	`getPropertyPriority()`			?	?
	`setProperty()`				?
	`item()`	?		?	?
colspan="9" \| Interface CSSValue
DOM2	`cssText`	?	16	?	?
DOM2	`cssValueType`	?		?	?
colspan="9" \| Interface CSSPrimitiveValue
DOM2	`primitiveType`	?	17	?	?
	`setFloatValue()`	?		?	?
	`getFloatValue()`	?		?	?
	`setStringValue()`	?		?	?
	`getStringValue()`	?		?	?
	`getCounterValue()`	?		?	?
	`getRectValue()`	?		?	?
	`getRGBColorValue()`	?		?	?
colspan="9" \| Interface CSSValueList
DOM2	`length`	?		?	?
DOM2	`item()`	?		?	?
colspan="9" \| Interface RGBColor
DOM2	`red`	?		?	?
	`green`	?		?	?
	`blue`	?		?	?
colspan="9" \| Interface Rect
DOM2	`top`	?		?	?
	`right`	?		?	?
	`bottom`	?		?	?
	`left`	?		?	?
colspan="9" \| Interface Counter
DOM2	`identifier`	?		?	?
	`listStyle`	?		?	?
	`separator`	?		?	?
colspan="9" \| Interface ViewCSS
DOM2	`getComputedStyle()`				?
colspan="9" \| Interface DocumentCSS
DOM2	`getOverrideStyle()`	?	18	?	?
colspan="9" \| Interface DOMImplementationCSS
DOM2	`createCSSStyleSheet()`	?	19	?	?
colspan="9" \| Interface ElementCSSInlineStyle
DOM2	`style`

Tasman Style (CSS Fundamental) notes

getPropertyPriority() — Returns !important instead of important.

Style (CSS Extended)

The interfaces found within this section are not mandatory.

		Trident	WebCore	KHTML
colspan="9" \| Interface CSS2Properties
DOM2	Support this interface		?	?
DOM2	Properties	Please refer to comparison of layout engines (CSS) for the comparison of CSS properties.

Events

The interfaces found within this section are not mandatory. The first goal is the design of a generic event system which allows registration of event handlers, describes event flow through a tree structure, and provides basic contextual information for each event. The second goal of the event model is to provide a common subset of the current event systems used in DOM Level 0 browsers. See also DOM Events for details.

		Trident	Tasman	Gecko	WebCore	KHTML	Presto
colspan="9" \| Interface EventTarget
DOM2	`addEventListener()`					?
	`removeEventListener()`				?	?
	`dispatchEvent()`				?	?
colspan="9" \| Interface EventListener
DOM2	`handleEvent()`	?	?	?	?	?	?
colspan="9" \| Interface Event
DOM2	`type`				?	?
	`target`					?
	`currentTarget`				?	?
	`eventPhase`				?	?
	`bubbles`				?	?
	`cancelable`				?	?
	`timeStamp`				?	?
	`stopPropagation()`				?	?
	`preventDefault()`				?	?
	`initEvent()`				?	?
colspan="9" \| Exception EventException
DOM2	`code`				?	?
colspan="9" \| Interface DocumentEvent
DOM2	`createEvent()`				?	?
colspan="9" \| Interface UIEvent
DOM2	`view`			20	?	?
	`detail`				?	?
	`initUIEvent()`				?	?
colspan="9" \| Events for interface UIEvent
DOM2	`DOMFocusIn`				?	?
	`DOMFocusOut`				?	?
	`DOMActivate`				?	?
colspan="9" \| Interface MouseEvent
DOM2	`screenX`					?
	`screenY`					?
	`clientX`					?
	`clientY`					?
	`ctrlKey`					?
	`shiftKey`					?
	`altKey`					?
	`metaKey`					?
	`button`					?
	`relatedTarget`					?
	`initMouseEvent()`	?	?		?	?
colspan="9" \| Events for interface MouseEvent
DOM2	`click`				?	?
	`mousedown`				?	?
	`mouseup`				?	?
	`mouseover`				?	?
	`mousemove`				?	?
	`mouseout`				?	?
colspan="9" \| Interface MutationEvent
DOM2	`relatedNode`				?	?
	`prevValue`				?	?
	`newValue`				?	?
	`attrName`				?	?
	`attrChange`				?	?
	`initMutationEvent`				?	?
colspan="9" \| Events for interface MutationEvent
DOM2	`DOMSubtreeModified`			21	?	?
	`DOMNodeInserted`				?	?
	`DOMNodeRemoved`				?	?
	`DOMNodeRemovedFromDocument`			22	?	?
	`DOMNodeInsertedIntoDocument`			23	?	?
	`DOMAttrModified`				?	?
	`DOMCharacterDataModified`				?	?
colspan="9" \| Events for HTML
DOM2	`load`				?	?
	`unload`				?	?
	`abort`				?	?
	`error`				?	?
	`select`				?	?
	`change`				?	?
	`submit`				?	?
	`reset`				?	?
	`focus`				?	?
	`blur`				?	?
	`resize`				?	?
	`scroll`				?	?

Trident Events notes

button — Does not use W3C values.

Tasman Events notes

button — Does not use W3C values.

Gecko Events notes

target — Return text node, if any, of the target element node prior to 1.3.
timeStamp — Returns a string, but should return a Date 24.

WebCore Events notes

target — Return text node, if any, of the target element node (fixed in v73, but reverted in v85).
clientX, clientY — Treated as pageX and pageY.
button — Does not use W3C values.

Presto Events notes

button — Does not use W3C values prior to 8.0.

Views

The interfaces found within this section are not mandatory. A document may have one or more "views" associated with it, e.g., a computed view on a document after applying a CSS stylesheet, or multiple presentations (e.g. HTML frame) of the same document in a client. That is, a view is some alternate representation of, or a presentation of, and associated with, a source document.

		Tasman	WebCore	KHTML
colspan="9" \| Interface AbstractView
DOM2	`document`	?	?	?
colspan="9" \| Interface DocumentView
DOM2	`defaultView`	?	?	?

Trident notes

defaultView — Trident does not support the defaultView property for documents, but it supports another property with the same meaning which is parentWindow.

Traversal

The interfaces found within this section are not mandatory. Its interfaces provide easy-to-use, robust, selective traversal of a document's contents.

		Tasman	WebCore	KHTML
colspan="9" \| Interface NodeIterator
DOM2	`root`	?	?	?
	`whatToShow`	?	?	?
	`filter`	?	?	?
	`expandEntityReferences`	?	?	?
	`nextNode()`	?	?	?
	`previousNode()`	?	?	?
	`detach()`	?	?	?
colspan="9" \| Interface NodeFilter
DOM2	`acceptNode()`	?	?	?
colspan="9" \| Interface TreeWalker
DOM2	`root`	?	?	?
	`whatToShow`	?	?	?
	`filter`	?	?	?
	`expandEntityReferences`	?	?	?
	`currentNode`	?	?	?
	`parentNode()`	?	?	?
	`firstChild()`	?	?	?
	`lastChild()`	?	?	?
	`previousSibling()`	?	?	?
	`nextSibling()`	?	?	?
	`previousNode()`	?	?	?
	`nextNode()`	?	?	?
colspan="9" \| Interface DocumentTraversal
DOM2	`createNodeIterator()`	?	?	?
DOM2	`createTreeWalker()`	?	?	?

Range

The interfaces found within this section are not mandatory. It includes methods for creating and moving a Range and methods for manipulating content with Ranges.

		Trident	Tasman	Gecko	WebCore	KHTML	Presto
colspan="9" \| Interface Range
DOM2	`startContainer`	rowspan="24"	?	rowspan="24"	rowspan="24"	?	rowspan="24"
	`startOffset`	?	?	?
	`endContainer`	?	?	?
	`endOffset`	?	?	?
	`collapsed`	?	?	?
	`commonAncestorContainer`	?	?	?
	`setStart()`	?	?	?
	`setEnd()`	?	?	?
	`setStartBefore()`	?	?	?
	`setStartAfter()`	?	?	?
	`setEndBefore()`	?	?	?
	`setEndAfter()`	?	?	?
	`collapse()`	?	?	?
	`selectNode()`	?	?	?
	`selectNodeContents()`	?	?	?
	`compareBoundaryPoints()`	?	?	?
	`deleteContents()`	?	?	?
	`extractContents()`	?	?	?
	`cloneContents()`	?	?	?
	`insertNode()`	?	?	?
	`surroundContents()`	?	?	?
	`cloneRange()`	?	?	?
	`toString()`	?	?	?
	`detach()`	?	?	?
colspan="9" \| Interface DocumentRange
DOM2	`createRange()`		?			?
colspan="9" \| Exception RangeException
DOM2	`code`		?			?

Load and Save

The interfaces within this section are considered fundamental, and must be fully implemented by all conforming implementations of the DOM Load and Save module.

		Gecko
colspan="9" \| Exception LSException
DOM3	`code`	25
colspan="9" \| Interface DOMImplementationLS
DOM3	`createLSParser()`
	`createLSSerializer()`
	`createLSInput()`
	`createLSOutput()`
colspan="9" \| Interface LSParser
DOM3	`domConfig`
	`filter`
	`async`
	`busy`
	`parse()`
	`parseURI()`
	`parseWithContext()`
	`abort()`
colspan="9" \| Interface LSInput
DOM3	`characterStream`
	`byteStream`
	`stringData`
	`systemId`
	`publicId`
	`baseURI`
	`encoding`
	`certifiedText`
colspan="9" \| Interface LSResourceResolver
DOM3	`resolveResource()`
colspan="9" \| Interface LSParserFilter
DOM3	`whatToShow`
	`startElement()`
	`acceptNode()`
colspan="9" \| Interface LSProgressEvent
DOM3	`input`
	`position`
	`totalSize`
colspan="9" \| Interface LSLoadEvent
DOM3	`newDocument`
DOM3	`input`
colspan="9" \| Interface LSSerializer
DOM3	`domConfig`
	`newLine`
	`filter`
	`write()`
	`writeToURI()`
	`writeToString()`
colspan="9" \| Interface LSOutput
DOM3	`characterStream`
	`byteStream`
	`systemId`
	`encoding`
colspan="9" \| Interface LSSerializerFilter
DOM3	`whatToShow`

Validation

The interfaces found within this section are not mandatory. This module provides interfaces to guide construction and editing of XML documents. Examples of such guided editing are queries like those that combine questions like "what does the schema allow me to insert/delete here" and "if I insert/delete here, will the document still be valid."

		Trident	Tasman	Gecko	WebCore	KHTML	Presto
colspan="9" \| Exception ExceptionVAL
DOM3	`code`
colspan="9" \| Interface DocumentEditVAL
DOM3	`continuousValidityChecking`
	`domConfig`
	`getDefinedElements()`
	`validateDocument()`
colspan="9" \| Interface NodeEditVAL
DOM3	`defaultValue`
	`enumeratedValues`
	`canInsertBefore()`
	`canRemoveChild()`
	`canReplaceChild()`
	`canAppendChild()`
	`nodeValidity()`
colspan="9" \| Interface ElementEditVAL
DOM3	`allowedChildren`
	`allowedFirstChildren`
	`allowedParents`
	`allowedNextSiblings`
	`allowedPreviousSiblings`
	`allowedAttributes`
	`requiredAttributes`
	`contentType`
	`canSetTextContent`
	`canSetAttribute`
	`canSetAttributeNode`
	`canSetAttributeNS`
	`canRemoveAttribute`
	`canRemoveAttributeNS`
	`canRemoveAttributeNode`
	`isElementDefined`
	`isElementDefinedNS`
colspan="9" \| Interface CharacterDataEditVAL
DOM3	`isWhitespaceOnly()`
	`canSetData()`
	`canAppendData()`
	`canReplaceData()`
	`canInsertData()`
	`canDeleteData()`

Main Menu

Comparison of layout engines (DOM)

General overview

Core (Fundamental)

Trident Core (Fundamental) notes

Gecko Core (Fundamental) notes

Presto Core (Fundamental) notes

Core (Extended)

HTML

Trident HTML notes

WebCore HTML notes

Presto HTML notes

Style (Style Sheets)

Trident Style (Style Sheets) notes

Style (CSS Fundamental)

Tasman Style (CSS Fundamental) notes

Style (CSS Extended)

Events

Trident Events notes

Tasman Events notes

Gecko Events notes

WebCore Events notes

Presto Events notes

Views

Trident notes

Traversal

Range

Load and Save

Validation

External links

Comparison of layout engines (DOM)

General overview

Core (Fundamental)

Trident Core (Fundamental) notes

Gecko Core (Fundamental) notes

Presto Core (Fundamental) notes

Core (Extended)

HTML

Trident HTML notes

WebCore HTML notes

Presto HTML notes

Style (Style Sheets)

Trident Style (Style Sheets) notes

Style (CSS Fundamental)

Tasman Style (CSS Fundamental) notes

Style (CSS Extended)

Events

Trident Events notes

Tasman Events notes

Gecko Events notes

WebCore Events notes

Presto Events notes

Views

Trident notes

Traversal

Range

Load and Save

Validation

External links

See Also

Comparison of layout engines (graphics)

Comparison of layout engines (XML)

Comparison of layout engines (XHTML)

Comparison of layout engines (HTML)

Comparison of layout engines (CSS)