DOMNode->isSupported() Checks if feature is supported for specified version &reftitle.description; DOMNode boolisSupported stringfeature stringversion Checks if the asked feature is supported for the specified version. &reftitle.parameters; feature The feature to test. See the example of for a list of features. version The version number of the feature to test. &reftitle.returnvalues; &return.success; &reftitle.seealso;