Document.implementation
The Document.implementation
property returns a
DOMImplementation
object associated with the current document.
Value
A DOMImplementation
object.
Examples
var modName = "HTML";
var modVer = "2.0";
var conformTest = document.implementation.hasFeature( modName, modVer );
alert( "DOM " + modName + " " + modVer + " supported?: " + conformTest );
// alerts with: "DOM HTML 2.0 supported?: true" if DOM Level 2 HTML module is supported.
A list of module names (e.g., Core, HTML, XML, etc.) is available in the DOM Level 2 Conformance Section.
Notes
The W3C's DOM Level 1 Recommendation only specified the hasFeature
method,
which is one way to determine if a DOM module is supported by a browser (see example
above and What does your user
agent claim to support?). If available, other DOMImplementation
methods provide services for controlling things outside of a single document. For
example, the DOMImplementation
interface includes a
createDocumentType
method with which DTDs can be created for one or more
documents managed by the implementation.
Specifications
Specification |
---|
DOM Standard # ref-for-dom-document-implementation① |
Browser compatibility
BCD tables only load in the browser
Gecko-specific notes
-
Starting with Gecko 19.0 (Firefox 19.0 / Thunderbird 19.0 / SeaMonkey 2.16) the
hasFeature
method will always return true.