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<!DOCTYPE html>
<html>
<body>
​
<p>Click the buttons to create a VIDEO element, one with preload set to "none", and one with preload set to "auto".</p>
​
<button onclick="myFunction('none')">Video without preload</button>
<button onclick="myFunction('auto')">Video with preload</button>
<br>
​
<script>
function myFunction(p) {
  var x = document.createElement("VIDEO");
  x.setAttribute("controls", "controls");
  var y = document.createElement("SOURCE");
  y.setAttribute("src", "movie.mp4");
  y.setAttribute("type", "video/mp4");
  x.appendChild(y);
  var z = document.createElement("SOURCE");
  z.setAttribute("src", "movie.ogg");
  z.setAttribute("type", "video/ogg");
  x.appendChild(z);
​
  // Set the preload property:
  x.preload = p;
​
  document.body.appendChild(x);
}
</script>
​
<p><b>Note:</b> The preload attribute is not supported in IE.</p>
​
</body>
​
<!-- Mirrored from www.w3schools.com/jsref/tryit.asp?filename=tryjsref_video_preload2 by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 03:17:52 GMT -->
</html>
​
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