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JavaScript
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<video id="player" muted autoplay controls> <source src="http://resrc.devdic.com/media/video/movie.mp4" type="video/mp4" /> <source src="http://resrc.devdic.com/media/video/movie.ogg" type="video/ogg" /> </video>
window.addEventListener("load", function() { let elPlayer = document.querySelector("#player"); elPlayer.addEventListener("canplay", () => { if(elPlayer.audioTracks) { let length = elPlayer.audioTracks.length; console.log(length); } else { console.log("Dose not exist value."); } }); });
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