Web/JavaScript/Reference/Global objects/DataView/getBigInt64

The getBigInt64() method gets a signed 64-bit integer (long long) at the specified byte offset from the start of the DataView.

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Syntax

dataview.getBigInt64(byteOffset [, littleEndian])

Parameters

byteOffset

The offset, in bytes, from the start of the view to read the data from.

littleEndian

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

Return value

A BigInt.

Errors thrown

RangeError

Thrown if the byteOffset is set such that 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 getBigInt64 method

var buffer = new ArrayBuffer(8);
var dataview = new DataView(buffer);
dataview.getBigInt64(0); // 0n

Specifications

Specification

ECMAScript (ECMA-262)The definition of 'DataView.prototype.getBigInt64()' in that specification.

Browser compatibility

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Update compatibility data on GitHub

	Desktop						Mobile						Server
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet	Node.js
getBigInt64	Chrome Full support 67	Edge Full support 79	Firefox Full support 68	IE No support No	Opera Full support 54	Safari No support No	WebView Android Full support 67	Chrome Android Full support 67	Firefox Android Full support 68	Opera Android Full support 48	Safari iOS No support No	Samsung Internet Android Full support 9.0	nodejs Full support 10.4.0

Legend

Full support  

Full support

No support  

No support

See also

• DataView
• ArrayBuffer
• BigInt

DataView.prototype.getBigInt64() by Mozilla Contributors is licensed under CC-BY-SA 2.5.