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<html> <body> <h1>HTML DOM Events</h1><h2>The onvolumechange Event</h2><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>Try to change the volume.</p><button onclick="setHalfVolume()" type="button">Set volume to 0.2</button><button onclick="setFullVolume()" type="button">Set volume to 1.0</button><p id="demo"></p><script>// Get the video element:const video = document.getElementById("myVideo");// Attach a "volumechange" event to the video:video.addEventListener("volumechange", getVolume);// Display the current audio volume:function getVolume() { document.getElementById("demo").innerHTML = "The audio volume is: " + video.volume;} // Set the audio volume to 0.2function setHalfVolume() { video.volume = 0.2;} // Set the audio volume to 1.0 (the highest)function setFullVolume() { video.volume = 1.0;} </script> </body> </html>