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JavaScript | dataView.getInt32()

The dataView.getInt32() is an inbuilt function in dataView which is used to get a 32-bit integer at the specified location i.e, at byte offset from the start of the dataView. The range of 32-bit integer value is from 0 to 4,294,967,295 for unsigned and from 2,147,483,648 to 2,147,483,647 for signed integer value.
Syntax:

dataview.getInt32(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: It returns 32-bit signed integer value.

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.setInt32(1, 56);
    document.write(dataview1.getInt32(1) + "<br>");
  
</script>                                                                    

Output:

56

Code #2:
Here as it can be seen that this function do 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.setInt32(1, 4.5);
    document.write(dataview1.getInt32(1) + "<br>");
  
</script>                                                                     

Output:

4

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.setInt32(1);
    document.write(dataview1.getInt32(1) + "<br>");
  
</script>                                                                     

Output:

0


This article is attributed to GeeksforGeeks.org

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