JavaScript | ArrayBuffer.isView()

The ArrayBuffer.isView() is an inbuilt function in JavaScript which is used to check whether the given argument for the function is typed array or not.
List of typed array:

  • Int8Array();
  • Uint8Array();
  • Uint8ClampedArray();
  • Int16Array();
  • Uint16Array();
  • Int32Array();
  • Uint32Array();
  • Float32Array();
  • Float64Array();
  • Syntax:

    ArrayBuffer.isView(p)

    Parameters: It accepts a parameter either in the form of typed array or something else.
    Return Values:It returns true if the parameter is typed array otherwise return false.

    JavaScript code to show the working of ArrayBuffer.isView() function:

    Code #1:



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    <script>
      
      // Creation of ArrayBuffer having a size in bytes
      var buffer = new ArrayBuffer(12);
      
      // Use of ArrayBuffer.isView function
      A = ArrayBuffer.isView(new Int32Array())
      document.write(A);
      
    </script>

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    Output:

    true

    Note: Here output is true because Int32Array is a typed array.
    Code #2:

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    <script>
      
      // Creation of ArrayBuffer having size in bytes
      var buffer = new ArrayBuffer(12);
      
      // Use of ArrayBuffer.isView function
      A = ArrayBuffer.isView();
      B = ArrayBuffer.isView(null);
      C = ArrayBuffer.isView(undefined);
      
      // Printing the result
      document.write(A + '<br>');
      document.write(B + '<br>');
      document.write(C + '<br>');
      
    </script>

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    Output:

    false
    false
    false

    Note:Here output is false because above arguments are not typed array.



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