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<html><body><audio id="myAudio" controls> <source src="horse.ogg" type="audio/ogg"> <source src="horse.mp3" type="audio/mpeg"> Your browser does not support the audio element.</audio><p>Click the button to add a new text track.</p><button onclick="myFunction()">Try it</button><p><strong>Note:</strong> The addTextTrack method is not supported in any major browsers.</p><script>var x = document.getElementById("myAudio");function myFunction() { var y = x.addTextTrack("caption"); y.addCue(new TextTrackCue("Test text", 01.000, 04.000,"","","",true));} </script></body></html>