get ArrayBuffer[@@species]
The ArrayBuffer[@@species]
accessor property returns the ArrayBuffer
constructor.
Description
The species accessor property returns the default constructor for ArrayBuffer
objects. Subclass constructors may over-ride it to change the constructor assignment.
Examples
Species in ordinary objects
The species property returns the default constructor function, which is the ArrayBuffer
constructor for ArrayBuffer
objects:
ArrayBuffer[Symbol.species]; // function ArrayBuffer()
Species in derived objects
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 |
---|
ECMAScript Language Specification # sec-get-arraybuffer-@@species |
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