How to use DOM Node IsSupported in JavaScript

In this article I am going to explain about DOM Node isSupported() method in JavaScript.
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JavaScript DOM Node isSupported() Method

JavaScript isSupported() method use for check specified feature are supported or not by an specified Node. If Nodes supports feature then its will return true other wise false.

Syntax

node.isSupported(feature, versions)

Example

<html>

<head>

    <script type="text/javascript">

        function myfun() {

            var item = document.getElementsByTagName("input")[0];

            var x = document.getElementById("tst");

            x.innerHTML = item.isSupported("Core", "2.0");

        }

    </script>

</head>

<body>

    <h1 id="tst" style="color: Blue">

    </h1>

    <input id="Text1" type="text" /><br />

    <button onclick="myfun()">

        check</button>

    <p>

        click button to check this feature supports or not by Input</p>

</body>

</html>

 

Output

 

 isSupported.jpg

 

<html>

<head>

    <script type="text/javascript">

        function myfun() {

            var item = document.getElementsByTagName("button")[0];

            var x = document.getElementById("tst");

            x.innerHTML = item.isSupported("password", "1.0");

        }

    </script>

</head>

<body>

    <h1 id="tst" style="color: Blue">

    </h1>

    <button onclick="myfun()">

        check</button>

    <p>

        click button to check this feature supports or not by Input</p>

</body>

</html>

 

Output

 

 isSupport2.jpg

 

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