TypedArray.prototype.byteLength
The byteLength
accessor property represents the length (in bytes) of a typed array.
Syntax
JavaScript
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<var>typedarray</var>.byteLength
Description
The byteLength
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 byteLength
property
JavaScript
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var buffer = new ArrayBuffer(8); var uint8 = new Uint8Array(buffer); uint8.byteLength; // 8 (matches the byteLength of the buffer) var uint8 = new Uint8Array(buffer, 1, 5); uint8.byteLength; // 5 (as specified when constructing the Uint8Array) var uint8 = new Uint8Array(buffer, 2); uint8.byteLength; // 6 (due to the offset of the constructed Uint8Array)
Specifications
Specification | Status | Comment |
---|---|---|
ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'TypedArray.prototype.byteLength' in that specification. |
Standard | Initial definition. |
ECMAScript 2017 Draft (ECMA-262) The definition of 'TypedArray.prototype.byteLength' in that specification. |
Draft |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | 7.0 | 4.0 (2) | 10 | 11.6 | 5.1 |
Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|
Basic support | 4.0 | (Yes) | 4.0 (2) | 10 | 11.6 | 4.2 |
See also
License
© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/javascript/reference/global_objects/typedarray/bytelength