JavaScript dataView.setFloat32() Method

Below is the example of the dataView.setFloat32() Method.

  • Example:
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    <script> 
    var buffer = new ArrayBuffer(20); 
      
    var dataview1 = new DataView(buffer, 0, 10); 
      
    dataview1.setFloat32(1, 12.22); 
    document.write(dataview1.getFloat32(1)); 
    </script> 

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  • Output:

    12.220000267028809
    

    • 



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 a byte and it says from the start of the view were to read the data.


Return value: This function does not return anything.




Example 1:


Input: dataview1.setFloat32(1, 56.24); 
Output: 56.2400016784668



Example 2:


Input: dataview1.setFloat32(1, Math.PI); 
Output: 3.1415927410125732



JavaScript code to show the working of this method

Code #1: 











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<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> 



















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Output:


56.2400016784668


Code #2:

The below code sets the value of PI as Math.PI and gives the output as the value of PI.











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<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> 



















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Output:


3.1415927410125732


Code #3:

When nothing as data is used to store then it gives the output as NaN i.e, not a number.











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<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> 



















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Output:


NaN


Supported Browsers: 


    

  • Google Chrome
    • 

  • Internet Explorer
    • 

  • Firefox
    • 

  • Apple Safari
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  • Opera
    • 



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