The dataView.setFloat64() is an inbuilt function in dataView that is used to store a signed 64-bit float value at the specified location i.e, at byte offset from the start of the dataView.
Syntax:
dataView.setFloat64(byteOffset)
Parameters: It has the parameter byteOffset which is offset in byte i.e. from the start of the view where to read the data.
Return value: This function does not return anything.
Below are examples of the dataView.setFloat64() Method.
Example:
javascript
var buffer = new ArrayBuffer(20); var dataview1 = new DataView(buffer, 0, 10); dataview1.setFloat64(1, 12.22); console.log(dataview1.getFloat64(1)); |
Output:
12.22
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 56.24 at slot 1dataview1.setFloat64(1, 56.24);console.log(dataview1.getFloat64(1)); |
Output:
56.24
Example 3: The below code sets the value of PI using Math.PI and gives the output as the value of PI.
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.setFloat64(1, Math.PI);console.log(dataview1.getFloat64(1)); |
Output:
3.141592653589793
Example 4: When there is no data to be stored then it gives the output as 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.setFloat64(1);console.log(dataview1.getFloat64(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.
