JavaScript element.requestFullscreen() Method

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JavaScript element.requestFullscreen() Method

The element.requestFullscreen() method opens an element in fullscreen mode.

Note: It's not guaranteed that the element will be put into full screen mode. You can determine whether or not your attempt to switch to full-screen mode is successful by using the Promise returned by requestFullscreen().


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<!DOCTYPE html> <html> <body> <video controls> <source src="/hawk.mp4" type="video/mp4"> </video> <p>Click on the button to request fullscreen of the video.</p> <button onclick="myFunction()">Click Me</button> <script> var elem = document.getElementsByTagName("video")[0]; function myFunction(){ elem.requestFullscreen().catch(err => { alert("Unable to display in fullscreen"); }); } </script> </body> </html>




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