JavaScript | Window innerWidth and innerHeight Properties

The innerWidth property in JavaScript returns the width and innerHeight property returns the height of window content area.

Syntax:

window.innerWidth
window.innerHeight

Parameter: It doesn’t required any parameters.

Return Value: It Returns a number, Representing the Width and Height of the window’s content area.

Note: For IE 8 i.e (Internet Edg 8) or earlier, use clientWidth and clientHeight to get width and height of window.

Example:

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<!DOCTYPE html>
<html>
     <head>
          <title>Browser Inner width and height</title>
          <style>
            body{
                text-align:center;
            }
            .gfg {
                font-size:40px;
                font-weight:bold;
                color:green;
            }
          </style>
     </head>
     <body>
     <div class = "gfg">GeeksforGeeks</div>
     <h2>Browser Window</h2>
     <p id="demo"></p>
     <script>
          var Width, Height, result;
  
          // height and width of Browser window
          Width = window.innerWidth || document.documentElement.clientWidth
                  || document.body.clientWidth;
  
          Height = window.innerHeight || document.documentElement.clientHeight
                  || document.body.clientHeight;
          // Display Width and Height.
          result = document.getElementById("demo");
          result.innerHTML = "Browser inner width: " + Width +
                              "<br>Browser inner height: " + Height;
  
     </script>
</body>
</html>

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Output:



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