Get the height of the video:
var x = document.getElementById("myVideo").height;
Click the button to return the value of the height attribute of the video.
<!DOCTYPE html> <html> <body> <video id="myVideo" width="100" height="100" controls> <source src="video.mp4" type="video/mp4"> <source src="video.ogg" type="video/ogg"> Your browser does not support the video tag. </video>//from w w w. j a v a 2s . co m <button onclick="myFunction()">Test</button> <p id="demo"></p> <script> function myFunction() { var x = document.getElementById("myVideo").height; document.getElementById("demo").innerHTML = x; } </script> </body> </html>