DOMImplementation - Web API 接口参考 编辑

DOMImplementation 接口代表了一个对象，这个对象提供了不依赖于任何document的方法。这个对象可以通过Document.implementation属性获得

属性

这个接口没有特定的属性，并且也没有继承到任何属性。

方法

没有继承的方法

DOMImplementation.createDocument()

创建并返回一个 XMLDocument对象.

DOMImplementation.createDocumentType()

创建并返回一个 DocumentType对象.

DOMImplementation.createHTMLDocument()

创建并返回一个 Document对象.

DOMImplementation.hasFeature()

返回一个是否支持所给定特性的Boolean值。这个方法是不可靠的，仅用于兼容性目的：除了SVG相关的查询，它总是返回 true。旧浏览器的行为非常不一致

Returns a Boolean indicating if a given feature is supported or not. This function is unreliable and kept for compatibility purpose alone: except for SVG-related queries, it always returns true. Old browsers are very inconsistent in their behavior.

规范

Specification	Status	Comment
DOM DOMImplementation	Living Standard	Removed the getFeature() method. Added the createHTMLDocument() method. Modified the return type of createDocument() from Document to XMLDocument.
Document Object Model (DOM) Level 3 Core Specification DOMImplementation	Obsolete	Added the getFeature() method (never implemented by any user agent).
Document Object Model (DOM) Level 2 Core Specification DOMImplementation	Obsolete	Added the createDocument() and createDocumentType() methods.
Document Object Model (DOM) Level 1 Specification DOMImplementation	Obsolete	Initial definition.

浏览器兼容性

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

• Desktop
• Mobile

Feature	Chrome	Firefox (Gecko)	Internet Explorer	Opera	Safari
Basic support	1.0	1.0 (1.7 or earlier)	6.0	(Yes)	(Yes)
createHTMLDocument()	(Yes)	4.0 (2.0)	9.0	(Yes)	(Yes)
createDocument()	(Yes)	1.0 (1.7 or earlier)	9.0	(Yes)	(Yes)
hasFeature()	(Yes)	1.0 (1.7 or earlier) [1]	6.0	(Yes)	(Yes)
createDocumentType()	(Yes)	1.0 (1.7 or earlier)	9.0	(Yes)	(Yes)

Feature	Android	Firefox Mobile (Gecko)	IE Mobile	Opera Mobile	Safari Mobile
Basic support	(Yes)	1.0 (1.0)	(Yes)	(Yes)	(Yes)
createHTMLDocument()	(Yes)	4.0 (2.0)	(Yes)	(Yes)	(Yes)
createDocument()	(Yes)	1.0 (1.0)	(Yes)	(Yes)	(Yes)
hasFeature()	(Yes)	1.0 (1.0)	(Yes)	(Yes)	(Yes)
createDocumentType()	(Yes)	1.0 (1.0)	(Yes)	(Yes)	(Yes)

[1] Since Gecko 19, hasFeature() mostly returns true.

See also

• The DOM interfaces index.