The dataView.getFloat32() is an inbuilt function in dataView that is used to get a 32-bit float at the specified location i.e, at byte offset from the start of the data view. The range of 32-bit floating-point numbers is from -3.4E+38 to +3.4E+38
Syntax:
dataView.getFloat32(byteOffset)
Parameters: It has the parameter byteOffset which is offset in a byte and it says where to read the data from the beginning(start) of the view.
Return value: It returns 32-bit signed float number.
Examples:
Input: dataview1.setFloat32(1, 56.34); Output: 56.34000015258789
Input: dataview1.setFloat32(1, Math.PI); Output: 3.1415927410125732
Below are examples of the dataView.getFloat32() Method.
Example 1:
javascript
var buffer = new ArrayBuffer(20); var dataview1 = new DataView(buffer, 0, 10); dataview1.setFloat32(1, 12.01); console.log(dataview1.getFloat32(1)); |
Output:
12.010000228881836
Example 2:
javascript
// Creating buffer with size in bytevar buffer = new ArrayBuffer(20);// Creating a viewvar dataview1 = new DataView(buffer, 0, 10);// put the data 56.34 at slot 1dataview1.setFloat32(1, 56.34);console.log(dataview1.getFloat32(1) + "<br>"); |
Output:
56.34000015258789
Example 3: Not only float value but also a math function like Math.PI can be taken as the parameter of the function.
javascript
// Creating buffer with size in bytevar buffer = new ArrayBuffer(20);// Creating a view with slot from o to 10var dataview1 = new DataView(buffer, 0, 10);// put the value of PI at slot 1dataview1.setFloat32(1, Math.PI);console.log(dataview1.getFloat32(1); |
Output:
3.1415927410125732
Example 4: When there is no data to be stored, then it returns NaN i.e, not a number.
javascript
// Creating buffer with size in bytevar buffer = new ArrayBuffer(20);// Creating a viewvar dataview1 = new DataView(buffer, 0, 10);// putting no data at slot 1dataview1.setFloat32(1);console.log(dataview1.getFloat32(1)); |
Output:
NaN
We have a complete list of Javascript Date Objects, to check those please go through this JavaScript dataView Complete Reference article.
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
We have a Cheat Sheet on Javascript where we covered all the important topics of Javascript to check those please go through Javascript Cheat Sheet-A Basic guide to JavaScript.
