The length
accessor property represents the length (in elements) of a typed array.
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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 |
---|
ECMAScript (ECMA-262) The definition of 'TypedArray.prototype.length' 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.
Desktop | Mobile | Server | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
length | Chrome Full support 7 | Edge Full support 14 | Firefox Full support 4 | IE Full support 10 | Opera Full support 11.6 | Safari Full support 5.1 | WebView Android Full support 4 | Chrome Android Full support 18 | Firefox Android Full support 4 | Opera Android Full support 12 | Safari iOS Full support 4.2 | Samsung Internet Android Full support 1.0 | nodejs Full support 0.10 |
Legend
- Full support
- Full support