Tutorialspoint.dev

JavaScript | dataView.setFloat32()

The dataView.setFloat32() is an inbuilt function in dataView which is used to store a signed 32-bit float value at the specified location i.e, at byte offset from the start of the dataView.
Syntax:

dataView.setFloat32(byteOffset)

Parameters: It has parameter byteOffset which is offset in byte and it says from the start of the view where to read the data.
Return value: This function does not return anything.

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 56.24 at slot 1
   dataview1.setFloat32(1, 56.24);
   document.write(dataview1.getFloat32(1));
     
</script>

Output:

56.2400016784668

Code #2:
Below code set the value of PI as Math.PI and gives output as the the value of PI.

<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.setFloat32(1, Math.PI);
   document.write(dataview1.getFloat32(1) + "<br>");
     
</script>

Output:

3.1415927410125732

Code #3:
When nothing as data is used to store then it gives output as 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.setFloat32(1);
   document.write(dataview1.getFloat32(1) + "<br>");
     
</script>

Output:

NaN


This article is attributed to GeeksforGeeks.org

leave a comment

code

0 Comments

load comments

Subscribe to Our Newsletter