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hasFeature method (implementation)

Browser support:

Returns whether the specified feature and version is implemented by the browser.

To detect whether a DOM module and version is supported by a node, use the isSupported method.

Syntax:

object.hasFeature (feature, version);

You can find the related objects in the Supported by objects section below.

Parameters:

feature

Required. String that specifies the name of the feature. This parameter is case-insensitive.

Some of the possible values:

XML

XML DOM standard.

HTML

HTML DOM standard.

version

Required in Firefox and Opera, optional in Internet Explorer, Google Chrome and Safari. String that specifies the version number (such as '1.0').

Return value:

Boolean. One of the following values:

false	Not implemented.
true	Implemented.

Example HTML code 1:

This example illustrates the use of the hasFeature method:

<head>
    <script type="text/javascript">
        function CheckFeature () {
            alert (document.implementation.hasFeature ("HTML","1.0"));
        }
    </script>
</head>
<body>
    <button onclick="CheckFeature ()">Is the DOM HTML 1.0 standard is implemented?</button>
</body>