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> 