HTML - DOMTokenList keys() Method

Quiz

HTML DOMTokenList keys() method returns an iterator which allows us to go through all the keys contained in the token list. These keys are unsigned integer.

Syntax

domtokenlist.keys();

Parameter

This method does not accept any parameter.

Return Value

It returns an iterator.

Example of HTML DOMTokenList 'keys()' Method

The following example returns keys of tokens in the token list.

<!DOCTYPE html>
<html lang="en">
<head>
    <title>
        HTML DOMTokenList keys() Method
    </title>
    <style>
        .color {
            background-color: #04af2f;
            color: white;
        }
        .font {
            font-size: 40px;
        }
        .align {
            text-align: center;
        }
    </style>
</head>
<body>
    <p id="add" class="color font align">
        Welcome to Tutorials Point...
    </p>
    <button onclick="fun()">Click me</button>
    <p>Keys are :</p>
    <p id="token"></p>
    <script>
        let result = document.getElementById("token");
        function fun() {
            let x = document.getElementById("add").classList.keys();
            for(let i of x){
                result.innerHTML += i +"<br>";
            }
        }
    </script>
</body>
</html>

Supported Browsers

Method
keys()	Yes 42	Yes 16	Yes 50	Yes 10.1	Yes 29

html_dom.htm

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