Below is the example of the dataView.setFloat64() Method.

• Example:
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  <script>  var buffer = new ArrayBuffer(20);     var dataview1 = new DataView(buffer, 0, 10);     dataview1.setFloat64(1, 12.22);  document.write(dataview1.getFloat64(1));  </script>

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• Output:

  12.22

The dataView.setFloat64() is an inbuilt function in dataView which 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 parameter byteOffset which is offset in byte i.e. from the start of the view were to read the data.

Return value: This function does not return anything.

Example 1:

Input: dataview1.setFloat64(1, 56.24);
Output: 56.24

Example 2:

Input: dataview1.setFloat64(1, Math.PI); 
Output: 3.141592653589793

JavaScript code to show the working of this method:
Code #1:

Output:

56.24

Code #2:
The below code sets the value of PI using Math.PI and gives the output as the value of PI.

Output:

3.141592653589793

Code #3:
When there is no data to be stored then it gives the output as NaN i.e, not a number.

Output:

NaN

Supported Browsers:

• Google Chrome
• Internet Explorer
• Firefox
• Apple Safari
• Opera