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<html> <body> <h1>HTML DOM Events</h1><h2>The onloadstart Event</h2><audio controls onloadstart="myFunction()"> <source src="horse.ogg" type="audio/ogg"> <source src="horse.mp3" type="audio/mpeg"> Your browser does not support audio playback.</audio><p id="demo">Event has fired: </p><script>function myFunction() { document.getElementById("demo").innerHTML += "Loading has started";}</script></body> </html>