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<html> <body> <video id="myVideo" width="320" height="240" controls> <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 buttons to get or set the volume of the video.</p><button onclick="getVolume()" type="button">What is the volume?</button><button onclick="setHalfVolume()" type="button">Set volume to 0.2</button><button onclick="setFullVolume()" type="button">Set volume to 1.0</button><script>var x = document.getElementById("myVideo");function getVolume() { alert(x.volume);} function setHalfVolume() { x.volume = 0.2;} function setFullVolume() { x.volume = 1.0;} </script> </body> </html>