JavaScript dataView.setFloat32() Method
Below is the example of the dataView.setFloat32() Method.
- Example:
javascript
<script> var buffer = new ArrayBuffer(20); var dataview1 = new DataView(buffer, 0, 10); dataview1.setFloat32(1, 12.22); document.write(dataview1.getFloat32(1)); </script> |
- 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:
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 56.24 at slot 1 dataview1.setFloat32(1, 56.24); document.write(dataview1.getFloat32(1)); </script> |
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.
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.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 the output as NaN i.e, not a number.
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.setFloat32(1); document.write(dataview1.getFloat32(1) + "<br>" ); </script> |
Output:
NaN
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