Web/JavaScript/Reference/Global objects/ArrayBuffer/slice

The slice() method returns a new ArrayBuffer whose contents are a copy of this ArrayBuffer's bytes from begin, inclusive, up to end, exclusive.

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Syntax

arraybuffer.slice(begin[, end])

Parameters

begin

Zero-based byte index at which to begin slicing.

end Optional

Byte index before which to end slicing. If end is unspecified, the new ArrayBuffer contains all bytes from begin to the end of this ArrayBuffer. If negative, it will make the Byte index begin from the last Byte.

Return value

A new ArrayBuffer object.

Description

The slice() method copies up to, but not including, the byte indicated by the end parameter. If either begin or end is negative, it refers to an index from the end of the array, as opposed to from the beginning.

The range specified by the begin and end parameters is clamped to the valid index range for the current array. If the computed length of the new ArrayBuffer would be negative, it is clamped to zero.

Examples

Copying an ArrayBuffer

const buf1 = new ArrayBuffer(8);
const buf2 = buf1.slice(0);

Specifications

Specification

ECMAScript (ECMA-262)The definition of 'ArrayBuffer.prototype.slice' 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
slice	Chrome Full support 17	Edge Full support 12	Firefox Full support 12 Notes' Full support 12 Notes' Notes' The non-standard ArrayBuffer.slice() method has been removed in Firefox 53 (but the standardized version ArrayBuffer.prototype.slice() is kept.	IE Full support 11	Opera Full support 12.1	Safari Full support 6	WebView Android Full support ≤37	Chrome Android Full support 18	Firefox Android Full support 14 Notes' Full support 14 Notes' Notes' The non-standard ArrayBuffer.slice() method has been removed in Firefox 53 (but the standardized version ArrayBuffer.prototype.slice() is kept.	Opera Android Full support 12.1	Safari iOS Full support 6	Samsung Internet Android Full support 1.0	nodejs Full support 0.12

Legend

Full support  

Full support

See implementation notes.'

See implementation notes.

See also

• ArrayBuffer

ArrayBuffer.prototype.slice() by Mozilla Contributors is licensed under CC-BY-SA 2.5.