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


arraybuffer.slice(begin[, end])


Zero-based byte index at which to begin slicing.
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. The range specified by the begin and end values 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.

Return value

A new ArrayBuffer object.


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.


Copying an ArrayBuffer

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


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Typed Array Specification Obsolete Superseded by EMCAScript 6.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

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support Yes Yes12111 Yes6
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support Yes Yes Yes141 Yes6 Yes

1. The non-standard ArrayBuffer.slice() method has been removed in Firefox 53 (but the standardized version ArrayBuffer.prototype.slice() is kept.

See also

Document Tags and Contributors

Contributors to this page: wbamberg, fscholz, jameshkramer, roryokane
Last updated by: wbamberg,