JavaScript: The Definitive Guide, 5th Edition

Name

Node.isSupported( ): determine if a node supports a feature — DOM Level 2 Core

Synopsis

boolean isSupported(Stringfeature,
                    String version);

Arguments

feature

The name of the feature to test.

version

The version number of the feature to test, or the empty string to test for support of any version of the feature.

Returns

true if the node supports the specified version of the specified feature, and false if it does not.

Description

The W3C DOM standard is modular, and implementations are not required to implement all modules or features of the standard. This method tests whether the implementation of this node supports the specified version of the named feature. See DOMImplementation.hasFeature( ) for a list of values for the feature and version arguments.

See Also

DOMImplementation.hasFeature( )