The length
accessor property represents the length (in elements) of a typed array.
Syntax
typedarray.length
Description
The length
property is an accessor property whose set accessor function is undefined
, meaning that you can only read this property. The value is established when a TypedArray is constructed and cannot be changed. If the TypedArray is not specifying an byteOffset
or a length
, the length of the referenced ArrayBuffer
will be returned. TypedArray is one of the TypedArray objects.
Examples
Using the length
property
var buffer = new ArrayBuffer(8); var uint8 = new Uint8Array(buffer); uint8.length; // 8 (matches the length of the buffer) var uint8 = new Uint8Array(buffer, 1, 5); uint8.length; // 5 (as specified when constructing the Uint8Array) var uint8 = new Uint8Array(buffer, 2); uint8.length; // 6 (due to the offset of the constructed Uint8Array)
Specifications
Specification | Status | Comment |
---|---|---|
ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'TypedArray.prototype.length' in that specification. |
Standard | Initial definition. |
ECMAScript Latest Draft (ECMA-262) The definition of 'TypedArray.prototype.length' in that specification. |
Draft |
Browser compatibility
Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|---|
Basic support | 7.0 | (Yes) | 4.0 (2) | 10 | 11.6 | 5.1 |
Feature | Android | Chrome for Android | Edge | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|---|
Basic support | 4.0 | (Yes) | (Yes) | 4.0 (2) | 10 | 11.6 | 4.2 |
See also
Document Tags and Contributors
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Contributors to this page:
jameshkramer,
fscholz
Last updated by:
jameshkramer,