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JavaScript dataView.getInt16() Method
  • Last Updated : 14 Sep, 2020

Below is the example of the dataView.getInt16() Method.

  • Example:




    <script> 
        var buffer = new ArrayBuffer(20); 
        var dataview1 = new DataView(buffer, 0, 10); 
        dataview1.setInt16(1, 12); 
        document.write(dataview1.getInt16(1) + "<br>"); 
    </script> 
  • Output:
    12

The dataView.getInt16() is an inbuilt function in dataView which is used to get a 16-bit integer at the specified location i.e, at byte offset from the start of the dataView. The range of 16-bit integer value is from 0 and 65,535 for unsigned and from ?32,768 to 32,767 for signed integer value.

Syntax:

dataview.getInt16(byteOffset)

Parameters: It has parameter byteOffset which is offset in a byte and it says where to read the data from the beginning(start) of the view.

Return value: It returns 16-bit signed integer value.



Example 1:

Input: dataview1.setInt16(1, 56); 
       document.write(dataview1.getInt16(1)); 
Output: 56

Example 2:

Input:  dataview1.setInt16(1, 4.5);
        document.write(dataview1.getInt16(1));

Output: 4

JavaScript code to show the working of this method:

Code #1:




<script>
  
    // Creating buffer with size in byte
    var buffer = new ArrayBuffer(20);
  
    // Creating a view
    var dataview1 = new DataView(buffer, 0, 10);
  
    // put the data 56 at slot 1
    dataview1.setInt16(1, 56);
    document.write(dataview1.getInt16(1) + "<br>");
  
</script>

Output:

56

Code #2: Here as it can be seen that this function does not take float value when this float value is given to this function then it convert that value to integer value.




<script>
  
    // Creating buffer with size in byte
    var buffer = new ArrayBuffer(20);
  
    // Creating a view with slot from o to 10
    var dataview1 = new DataView(buffer, 0, 10);
  
    // put the 4.5 at slot 1
    dataview1.setInt16(1, 4.5);
    document.write(dataview1.getInt16(1) + "<br>");
  
</script>

Output:

4

Code #3: When there is no data to be stored, then it returns NaN i.e, not a number.




<script>
  
    // Creating buffer with size in byte
    var buffer = new ArrayBuffer(20);
  
    // Creating a view
    var dataview1 = new DataView(buffer, 0, 10);
  
    // putting no data at slot 1
    dataview1.setInt16(1);
    document.write(dataview1.getInt16(1) + "<br>");
  
</script>

Output:

0

Supported Browsers:

  • Google Chrome
  • Firefox
  • Apple Safari
  • Opera

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