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 where to read the data.
Return value: This function does not return anything.
Code #1:
<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.setFloat64(1, 56.24); document.write(dataview1.getFloat64(1)); </script> |
Output:
56.24
Code #2:
Below code set the value of PI using Math.PI and gives output as the the value of PI.
<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.setFloat64(1, Math.PI); document.write(dataview1.getFloat64(1) + "<br>"); </script> |
Output:
3.141592653589793
Code #3:
When there is no data to be stored then it gives output as NaN i.e, not a number.
<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.setFloat64(1); document.write(dataview1.getFloat64(1) + "<br>"); </script> |
Output:
NaN
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