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 Status Comment
Typed Array Specification Obsolete Superseded by ECMAScript 2015.
ECMAScript 2015 (6th Edition, ECMA-262)
The definition of 'DataView.prototype.getFloat64' in that specification.
Standard Initial definition in ECMA standard.
ECMAScript Latest Draft (ECMA-262)
The definition of 'DataView.prototype.getFloat64' in that specification.
Draft  

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support912151012.15.1
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support4 Yes Yes15124.2 ?

See also

Document Tags and Contributors

 Contributors to this page: wbamberg, fscholz, jameshkramer, kdex, joemccourt, ibratoev, eduardoboucas
 Last updated by: wbamberg,