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<!DOCTYPE html> <html> <body> <video id="myVideo" width="320" height="240" controls preload="none"> <source src="movie.mp4" type="video/mp4"> <source src="movie.ogg" type="video/ogg"> Your browser does not support the video tag. </video> <p>Click the button to return the value of the preload attribute of the video.</p> <button onclick="myFunction()">Try it</button> <p><b>Note:</b> The preload attribute is not supported in IE.</p> <p id="demo"></p> <script> function myFunction() { var x = document.getElementById("myVideo").preload; document.getElementById("demo").innerHTML = x; } </script> </body> </html>