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JavaScript dataView.getUint16() Method

  • Last Updated : 10 Oct, 2021
Geek Week

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

  • Example: 
     

javascript




<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: 
 



javascript




<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: 
 

56

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

javascript




<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: 
 

3

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

javascript




<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: 
 

0

Supported Browsers: 
 

  • Google Chrome 9 and above
  • Edge 12 and above
  • Firefox 15 and above
  • Internet Explorer 10 and above
  • Opera 12.1 and above
  • Safari 5.1 and above

 

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