JavaScript dataView.getUint16() Method

Last Updated : 15 Sep, 2020

Below is the example of the dataView.getUint16()() Method.

Example:

<script>
   var buffer = new ArrayBuffer(20);

   var dataview1 = new DataView(buffer, 0, 10);

   dataview1.setUint16(1, 12);
  document.write(dataview1.getUint16(1));
</script>
Output:
```
12
```

The dataView.getUint16() is an inbuilt function in dataView which is used to get an unsigned 16-bit integer at the specified location i.e, at byte offset from the start of the dataView.

Syntax:

dataView.getUint16(byteOffset)

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

Return value: It returns unsigned 16-bit integer.

Example 1:

Input: dataview1.setUint16(1, 56); 
       document.write(dataview1.getUint16(1)); 
Output: 56

Example 2:

Input: dataview1.setUint16(1, Math.PI); 
       document.write(dataview1.getUint16(1)); 
Output: 3

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.setUint16(1, 56);
  document.write(dataview1.getUint16(1) + "<br>");
     
</script>

Output:

Code #2:
This function convert the float value of PI from 3.14 to 3

<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 value of PI at slot 1
   dataview1.setUint16(1, Math.PI);
   document.write(dataview1.getUint16(1) + "<br>");
     
</script>

Output:

Code #3:
When there is no data to be stored, then it returns zero (0).

<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.setUint16(1);
   document.write(dataview1.getUint16(1) + "<br>");
     
</script>

Output:

Supported Browsers:

Google Chrome
Firefox
Apple Safari
Opera

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