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HTML | DOM Storage key() Method

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The DOM Storage key() Method is related to the Storage object and is used to return the name of the key with the specified index. Storage object can be either a localStorage or sessionStorage Object. 

Syntax:

  • Local storage:
localStorage.key(index)
  • Session storage:
sessionStorage.key(index)

Parameters: It accepts a parameter i.e. index to get the name of the key with that particular given index.

Return Values: It returns the name of the key in the form of the string.

Below is the HTML code to show the working of HTML DOM Storage key() Object:
Example:

HTML

<!DOCTYPE html>
<html>
<head>
    <title>
        HTML DOM Storage key() Method
    </title>
    <!-- Script to get the name of the key -->
    <script>
        function myGeeks() {
            var key = localStorage.key(0);
            document.getElementById(
            "geeks").innerHTML = key;
        }
    </script>
</head>
 
<body>
    <h1>GeeksForGeeks</h1>
    <h2>DOM Storage key() Method</h2>
    <br>
    <button onclick="myGeeks()">
        Submit
    </button>
    <p id="geeks"></p>
  
</body>
</html>

                    

Output:

  • Before Click: 

  • After Click: 

Supported Browsers: The browser supported by DOM Storage key() Method are listed below:

  • Google Chrome 4
  • Edge 12 
  • Internet Explorer 8
  • Firefox 3.5
  • Opera 10.5
  • Safari 4

Last Updated : 04 Aug, 2022
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