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The ArrayBuffer[@@species] accessor property returns the ArrayBuffer constructor.




The species accessor property returns the default constructor for ArrayBuffer objects. Subclass constructors may over-ride it to change the constructor assignment.


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; }


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.
Living Standard  

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support ? ?48 ? ? ?
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidIE mobileOpera AndroidiOS Safari
Basic support ? ? ?48 ? ? ?

See also

Document Tags and Contributors

 Contributors to this page: fscholz, arai
 Last updated by: fscholz,