JavaScript Fullscreen API
The Fullscreen API
The Fullscreen API has methods and properties to handle HTML elements in full-screen.
Example
Show a <video> element in fullscreen mode:
  /* Get the element you want to display in fullscreen 
  */
  var elem = document.getElementById("myvideo"); 
  /* Execute the openFullscreen() function to open the video in fullscreen.
  Include prefixes for browsers that do not support the requestFullscreen property */
  function openFullscreen() {
  
  if (elem.requestFullscreen) {
    elem.requestFullscreen();
  } else if (elem.webkitRequestFullscreen) 
  { /* Safari 
  */
    
  elem.webkitRequestFullscreen();
  } else if (elem.msRequestFullscreen) 
  { /* IE11
   */
    elem.msRequestFullscreen();
  }
  }
Try it Yourself »
Fullscreen Properties and Methods
| Property/Method | Description | 
|---|---|
| exitFullscreen() | Cancels the element in fullscreen mode | 
| fullscreenElement | Returns the element that is in full-screen mode, | 
| fullscreenEnabled() | Returns true if the document can be viewed in fullscreen mode | 
| requestFullscreen() | Opens an element in fullscreen mode | 
 
 
