Aquileo | HTML DOM TokenList supports() Method

The supports() method in HTML DOM is used to check if a specific token is supported in a DOM TokenList.

Syntax:

domtokenlist.supports(token)

Parameter values: It contains a single value token that specifies the name of the token which is to be checked.

Return value: It returns a boolean value that returns true if a specified token belongs to a DOM TokenList.

Example: Below HTML code illustrates the use of supports() method in HTML DOM.

HTML

<!DOCTYPE html>
<html>

<body style="text-align:center">
    <h1 style="color: green;">
        GeeksforGeeks
    </h1>
    
    <h2>HTML DOM TokenList supports() Method</h2>

    <iframe id="iframeID" src=
        "https://www.geeksforgeeks.org/community/">
    </iframe>

    
<p>
        Click on the below button if the 
        iframe supports "allow-forms":or not
    </p>

    
    <button onclick="btnclick()">
        Click Here!
    </button>
    
    <p id="paraID" style="font-size:25px"></p>



    <script>
        function btnclick() {
            const list = document.getElementById(
                    "iframeID").sandbox;

            document.getElementById("paraID").innerHTML
                = list.supports("allow-forms");
        }
    </script>
</body>

</html>

Supported Browsers:

Google Chrome 49 and above
Edge 17 and above
Internet Explorer not supported
Firefox 49 and above
Safari 10.1 and above
Opera 36 and above

HTML DOM TokenList supports() Method

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