CSS StyleDeclaration length Property

Last Updated : 9 Jun, 2023

The length property is used to find the number of style declarations used for the particular element.

Syntax: It is used to return the length property.  

element.style.length

Return Value: It returns the number of style declarations specified for an element in the form of integers.

Example: To show the working of the length property: 

html 
<!DOCTYPE html>
<html>
<head>
    <title>
        CSS StyleDeclaration length Property
    </title>
    <style>
        body {
            text-align: center;
        }

        h1 {
            color: green;
        }
    </style>
</head>

<body>
    <h1>GeeksforGeeks</h1>
    <!-- Adding inline style -->
    <p id="p1" style=" color:green;
            font-size:20;">
        length Property
    </p>

    <p>
        Click the button to
        return the length property
    </p>

    <button onclick="myFunction()">
        Get length
    </button>

    <p id="gfg"></p>
    <!-- Script to get length property -->
    <script>
        function myFunction() {
            let x = document.getElementById(
                "p1").style.length;

            document.getElementById("gfg").innerHTML =
                "Number of styles = " + x;
        }
    </script>
</body>
</html>

Output: 

 

Supported Browsers: The supported browsers by Style Declaration length Property are listed below: 

  • Google Chrome 1
  • Edge 12
  • Internet Explorer 9
  • Firefox 1
  • Opera 12.1
  • Safari 6
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