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HTML | Window innerWidth Property
  • Last Updated : 26 Jul, 2019

The Window innerWidth property is used for returning the width of a window’s content area. It is a read-only property and returns a number which represents the width of the browser window’s content area in pixels.

Syntax:

window.innerWidth

Below program illustrates the Window innerWidth Property :

Returning the current frame’s width.




<!DOCTYPE html>
<html>
  
<head>
    <title>
      Window innerWidth Property in HTML
    </title>
    <style>
        h1 {
            color: green;
        }
          
        h2 {
            font-family: Impact;
        }
          
        body {
            text-align: center;
        }
    </style>
</head>
  
<body>
  
    <h1>GeeksforGeeks</h1>
    <h2>Window innerWidth Property</h2>
  
    <p>
      For returning the current frame's width, 
      double click the "Check Width" button: 
    </p>
  
    <button ondblclick="width()">Check Width</button>
  
    <p id="measure"></p>
  
    <script>
        function width() {
            var w = window.innerWidth;
            document.getElementById("measure").innerHTML =
                                     "Frame's Width: " + w;
        }
    </script>
  
</body>
  
</html>   

Output:

After clicking the button

Supported Browsers: The browser supported by Window innerWidth Property are listed below:

  • Google Chrome
  • Internet Explorer
  • Firefox
  • Opera
  • Safari



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