Javascript DOM HTML Audio duration Property get

Introduction

Get the length of an audio: 

var x = document.getElementById("myAudio").duration;

Click the button to get the exact length (duration) of the audio, in seconds.

View in separate window 

<!DOCTYPE html>
<html>
<body>

<audio id="myAudio" controls>
  <source src="sound.ogg" type="audio/ogg">
  <source src="sound.mp3" type="audio/mpeg">
  Your browser does not support the audio element.
</audio>/*from ww  w  . ja v  a  2  s  .co m*/
<button onclick="myFunction()">Test</button>

<p id="demo"></p>

<script>
function myFunction() {
  var x = document.getElementById("myAudio").duration;
  document.getElementById("demo").innerHTML = x;
}
</script>

</body>
</html>

The duration property returns the length of an audio, in seconds.

This property is read-only.

If no audio is set, "NaN" (Not-a-Number) is returned.

If the audio is streamed and has no predefined length, "Inf" (Infinity) is returned.




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