Node.isSupported

The Node.isSupported()returns a Boolean flag containing the result of a test whether the DOM implementation implements a specific feature and this feature is supported by the specific node.

Syntax

boolValue = element.isSupported(feature, version)

Parameters

feature

Is a DOMString containing the name of the feature to test. This is the same name which can be passed to the method hasFeature on DOMImplementation. Possible values defined within the core DOM specification are listed on the DOM Level 2 Conformance Section.

version

Is a DOMString containing the version number of the feature to test. In DOM Level 2, version 1, this is the string 2.0. If the version is not specified, supporting any version of the feature will cause the method to return true.

Example

<div id="doc">
</div>

<script>
 // Get an element and check to see if its supports the DOM2 HTML Module.
 var main = document.getElementById('doc');
 var output = main.isSupported('HTML', '2.0');
</script>

Specifications

Specification	Status	Comment
DOM The definition of 'Node' in that specification.	Living Standard	Removed from the specification.
Document Object Model (DOM) Level 3 Core Specification The definition of 'Node.isSupported()' in that specification.	Recommendation	No change from Document Object Model (DOM) Level 2 Core Specification.
Document Object Model (DOM) Level 2 Core Specification The definition of 'Node.isSupported()' in that specification.	Recommendation	Initial definition.

Browser compatibility

[1] This method will always return true (bug 801425)

See also

• The Node interface it belongs to.