The ArrayBuffer[@@species]
accessor property returns the ArrayBuffer
constructor.
Syntax
ArrayBuffer[Symbol.species]
Description
The species accessor property returns the default constructor for ArrayBuffer
objects. Subclass constructors may over-ride it to change the constructor assignment.
Examples
The species property returns the default constructor function, which is the ArrayBuffer
constructor for ArrayBuffer
objects:
ArrayBuffer[Symbol.species]; // function ArrayBuffer()
In a derived collection object (e.g. your custom array buffer MyArrayBuffer
), the MyArrayBuffer
species is the MyArrayBuffer
constructor. However, you might want to overwrite this, in order to return parent ArrayBuffer
objects in your derived class methods:
class MyArrayBuffer extends ArrayBuffer { // Overwrite MyArrayBuffer species to the parent ArrayBuffer constructor static get [Symbol.species]() { return ArrayBuffer; } }
Specifications
Specification | Status | Comment |
---|---|---|
ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'get ArrayBuffer [ @@species ]' in that specification. |
Standard | Initial definition. |
ECMAScript Latest Draft (ECMA-262) The definition of 'get ArrayBuffer [ @@species ]' in that specification. |
Draft |
Browser compatibility
Desktop | Mobile | Server | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Basic support | Chrome ? | Edge ? | Firefox Full support 48 | IE ? | Opera ? | Safari ? | WebView Android ? | Chrome Android ? | Edge Mobile ? | Firefox Android Full support 48 | Opera Android ? | Safari iOS ? | Samsung Internet Android ? | nodejs
Full support
6.5.0
|
Legend
- Full support
- Full support
- Compatibility unknown
- Compatibility unknown
- User must explicitly enable this feature.
- User must explicitly enable this feature.