HTML | DOM Audio seekable Property

Last Updated : 05 Aug, 2019

The DOM Audio seekable property is used for returning a TimeRanges object. The TimeRanges object is used for representing the ranges of the audio which are available for seeking by the user.
The time-range of audio which is available for seeking i.e. moving playback position is called a seekable range.
It is often possible to seek anywhere in the audio even before it has been buffered if its a non-streaming audio.
The Audio seekable property is a read-only property.

The time ranges object properties are:

length: It is used to get the number of seekable ranges in the audio.
start(index): It is used to get the position of a seekable range.
end(index): It is used to get the end position of a seekable range.

Syntax:

audioObject.seekable

Below program illustrates the Audio seekable Property:
Example: Getting the first seekable range of the audio in seconds.

<!DOCTYPE html> 
<html> 
  
<head> 
    <title> 
        Audio seekable Property 
    </title> 
</head> 
  
<body style="text-align:center"> 
  
    <h1 style="color:green"> 
      GeeksforGeeks 
    </h1> 
    <h2 style="font-family: Impact"> 
      Audio seekable Property 
    </h2> 
    <br> 
  
    <audio id="Test_Audio" controls> 
        <source src="sample1.ogg" 
                type="audio/ogg"> 
        
        <source src="sample1.mp3"
                type="audio/mpeg"> 
    </audio> 
  
    <p>To get the first seekable range of the audio, 
      double click the "Return Seekable Range" button. 
    </p> 
    <br> 
  
    <button ondblclick="MyAudio()" 
            type="button">  
      Return Seekable Range  
    </button> 
  
    <p id="test"></p> 
  
    <script> 
        function MyAudio() { 
            var a = document.getElementById("Test_Audio"); 
            document.getElementById("test").innerHTML =  
              "Start time: " + a.seekable.start(0) +  
              " End time: " + a.seekable.end(0); 
        } 
    </script> 
  
</body> 
  
</html> 