Get the height of an <object> element:
var x = document.getElementById("myObject").height;
Click the button to display the height of the object element.
<!DOCTYPE html> <html> <body> <object id="myObject" width="100" height="100" data="video.mp4"></object> <button onclick="myFunction()">Test</button> <p id="demo"></p> <script> function myFunction() {/*from www . java2 s .c o m*/ var x = document.getElementById("myObject").height; document.getElementById("demo").innerHTML = x; } </script> </body> </html>