DataView.prototype.setFloat64()

The setFloat64() method stores a signed 64-bit float (double) value at the specified byte offset from the start of the DataView.

dataview.setFloat64(byteOffset, value [, littleEndian])

byteOffset

The offset, in byte, from the start of the view where to store the data.

value

The value to set.

littleEndian

Optional Indicates whether the 64-bit float is stored in little- or big-endian format. If false or undefined, a big-endian value is written.

undefined.

RangeError

Thrown if the byteOffset is set such as it would store beyond the end of the view.

var buffer = new ArrayBuffer(8);
var dataview = new DataView(buffer);
dataview.setFloat64(0, 3);
dataview.getFloat64(0); // 3

• DataView
• ArrayBuffer