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Fullscreen API using JavaScript

  • Last Updated : 14 Jul, 2021
Geek Week

The window supports the full-screen interface by using web API. We can activate or deactivate the full-screen mode of the screen. The fullscreen API provides methods to present a specific element in a full-screen mode.

Approach:

  • The onclick event will trigger the activate() method which will be for activating the full screen.
  • The same will be applied for exiting from the full screen.
<button onclick="activate(document.documentElement);">
      Go To Full Screen
</button>
<button onclick="deactivate();">
      Leave Full Screen
</button>

Example: The following code uses the requestFullscreen() method. The same is done for exiting full screen by using exitFullscreen() method.

HTML




<!DOCTYPE html>
<html lang="en">
  
<head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content=
        "width=device-width, initial-scale=1.0" />
</head>
  
<body>
    <h1 style="color: green">GeeksForGeeks</h1>
  
    <h2>Window fullscreen property</h2>
  
    <button onclick="activate(document.documentElement);">
        Go To Full Screen
    </button>
  
    <button onclick="deactivate();">Leave FullScreen</button>
  
    <script>
  
        // Function for full screen activation
        function activate(ele) {
            if (ele.requestFullscreen) {
                ele.requestFullscreen();
            }
        }
  
        // Function for full screen activation
        function deactivate() {
            if (document.exitFullscreen) {
                document.exitFullscreen();
            }
        }
    </script>
</body>
  
</html>

Output:

activate or deactivate full screen

Application:



  • You can apply it to any element in your website

  • It will help to execute the full screen.

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