JavaScript DataView.getFloat32() method

The JavaScript DataView.getFloat32() is an inbuilt method in dataView. It is used to get a signed 32-bit float number at a specified location.

NOTE: Range of 32-bit floating point number is from -3.4+38 to +3.4E+38.

Syntax

Parameters

byteoffset: The offset, in a byte, from the start of the view where to read the data.

Return value

This method returns a signed 32-bit float number.

Browser Support

Chrome	9
Safari	5.1
Firefox	15
Opera	12.1

Example 1

<script>
//JavaScript to illustrate dataview.getFloat32() method
// creating a ArrayBuffer 
var JavaTpoint = new ArrayBuffer(8);
// creating a view
var arr = new DataView(JavaTpoint);
// put the value 3.1 at slot 1
arr.setFloat32(1,3.1);
document.write("If we give a Float value then output will be<br><br>");
document.write(arr.getFloat32(1));
//expected output: 3.0999999046325684
</script>

Test it Now

Output:

If we give a Float value then output will be
3.0999999046325684

Example 2

<script>
//JavaScript to illustrate dataview.getFloat32() method
// if there is no data to be stored then it returns Nan
// creating a ArrayBuffer 
var JavaTpoint = new ArrayBuffer(8);
// creating a view
var arr = new DataView(JavaTpoint);
// No Data
arr.setFloat32(1);
document.write(" if there is no data to be stored, then Output will Be:<br><br>")
document.write(arr.getFloat32(1));
//expected output: NaN
</script>

Test it Now

Output:

if there is no data to be stored, then Output will Be:

NaN

Example 3

//JavaScript to illustrate dataview.getFloat32() method
// creating a ArrayBuffer 
var JavaTpoint = new ArrayBuffer(10);
// creating a view
var arr = new DataView(JavaTpoint);
//We can also use math function like Math.PI
document.write("PI value will be<br><br>");
arr.setFloat32(1,Math.PI);
document.write(arr.getFloat32(1));
//expected output: 3.1415927410125732
</script>

Test it Now

Output: