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Web Audio API | AudioNode context property
  • Last Updated : 23 Jul, 2019

The AudioNode interface has a context property which returns the related BaseAudioContext, which is the object that represents the process graph the node that has participated.

Syntax:

var ctx = anAudioNode.context;

Return Value: It returns a AudioContext or OfflineAudioContext object.

Example 1:




<!DOCTYPE html>
<html>
  
<head>
    <title>
        AudioNode context property
    </title>
</head>
  
<body>
  
    <h1 style="color:green">
        GeeksforGeeks
    </h1>
      
    <h2>AudioNode context property</h2>
      
    <script>
        const AudioContext =
            window.AudioContext || window.webkitAudioContext;
  
        const audioCnt = new AudioContext();
  
        // Oscillator
        const osciltr = audioCnt.createOscillator();
  
        // Gain node
        const GainNode = audioCnt.createGain();
        osciltr.connect(GainNode).connect(audioCnt.destination);
  
        console.log(osciltr.context);
    </script>
</body>
  
</html>

Output:



Example 2:




<!DOCTYPE html>
<html>
  
<head>
    <title>
        AudioNode context property
    </title>
</head>
  
<body>
    <h1 style="color:green">
        GeeksforGeeks
    </h1>
      
    <h2>AudioNode context property</h2>
      
    <script>
        const AudioContext =
            window.AudioContext || window.webkitAudioContext;
          
        const audioCnt = new AudioContext();
  
        // Oscillator
        const osciltr = audioCnt.createOscillator();
  
        // Gain_node
        const gNode = audioCnt.createGain();
        osciltr.connect(gNode).connect(audioCnt.destination);
  
        console.log(osciltr.context === audioCnt);
    </script>
</body>
  
</html>

Output:

Supported Browsers: The browsers supported by AudioNode context property are listed below:

  • Google Chrome 35.0
  • Firefox 25.0
  • Apple Safari 6 -x-
  • Opera 22.0



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