Web Audio API | AudioNode numberOfOutputs property

The AudioNode.numberOfOutputs property is used to return the number of outputs which are coming from nodes. The value of destination node AudioDestinationNode is 0 for this attribute.

Syntax:

var numOutputs = audioNode.numberOfOutputs;

Return Value: It returns an integer value greater than equal to zero.

Example 1:

<!DOCTYPE HTML>  

<html>  

<head>  

    <title>  

        Web Audio API | AudioNode numberOfOutputs property 

    </title> 

</head>  

<body>  

    <h1 style = "color:green;" >  

        GeeksforGeeks 

    </h1> 

    <h2> 

        AudioNode numberOfOutputs property 

    </h2> 

    <script> 

        // Create new Audio context 

        const audioContext = new AudioContext(); 

        // Create an OscillatorNode  

        const oscillator = audioContext.createOscillator(); 

        const gainNode = audioContext.createGain(); 

        oscillator.connect(gainNode).connect(audioContext.destination); 

        // Display the numberOfOutputs in console view 

        console.log(oscillator.numberOfOutputs); 

    </script> 

</body> 

</html>

Output:

Example 2:

<!DOCTYPE HTML>  
<html>  

<head>  

    <title>  

        Web Audio API | AudioNode numberOfOutputs property 

    </title> 
</head>  

<body>  

    <h1 style = "color:green;" >  

        GeeksforGeeks 

    </h1> 

    <h2> 

        AudioNode numberOfOutputs property 

    </h2> 

    <script> 

        // Create new Audio context 

        const audioContext = new AudioContext(); 

        // Create an OscillatorNode  

        const oscillator = audioContext.createOscillator(); 

        const gainNode = audioContext.createGain(); 

        oscillator.connect(gainNode).connect(audioContext.destination); 

        // Display the numberOfOutputs in console view 

        console.log(gainNode.numberOfOutputs); 

    </script> 
</body> 

</html>

Output:

Example 3:

<!DOCTYPE HTML>  

<html>  

<head>  

    <title>  

        Web Audio API | AudioNode numberOfOutputs property 

    </title> 

</head>  

<body>  

    <h1 style = "color:green;" >  

        GeeksforGeeks 

    </h1> 

    <h2> 

        AudioNode numberOfOutputs property 

    </h2> 

    <script> 

        // Create new Audio context 

        const audioContext = new AudioContext(); 

        // Create an OscillatorNode  

        const oscillator = audioContext.createOscillator(); 

        const gainNode = audioContext.createGain(); 

        oscillator.connect(gainNode).connect(audioContext.destination); 

        // Display the numberOfOutputs in console view 

        console.log(audioContext.destination.numberOfOutputs); 

    </script> 

</body> 

</html>

Output:

Supported Browsers: The browser supported by AudioNode.numberOfOutputs property are listed below:

Google Chrome 14.0
Edge 12.0
Firefox 25.0
Safari 6.0
Opera 15.0

Article Tags :

HTML

Web Technologies

Audio-API