DataView.prototype.getFloat64()

The getFloat64() method gets a signed 64-bit float (double) at the specified byte offset from the start of the DataView.

Syntax

dataview.getFloat64(byteOffset [, littleEndian])

Parameters

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

Return value

A signed 64-bit float number.

Errors thrown

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

Description

There is no alignment constraint; multi-byte values may be fetched from any offset.

Examples

Using the getFloat64 method

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

Specifications

Specification
ECMAScript (ECMA-262)
The definition of 'DataView.prototype.getFloat64' in that specification.

Browser compatibility

DesktopMobileServer
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung InternetNode.js
getFloat64Chrome Full support 9Edge Full support 12Firefox Full support 15IE Full support 10Opera Full support 12.1Safari Full support 5.1WebView Android Full support 4Chrome Android Full support 18Firefox Android Full support 15Opera Android Full support 12.1Safari iOS Full support 4.2Samsung Internet Android Full support 1.0nodejs Full support 0.10

Legend

Full support
Full support

See also