get TypedArray[@@species]
The TypedArray[@@species]
accessor property returns the constructor of a typed array.
Description
The species
accessor property returns the default constructor for typed array 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 one of the typed array constructors for a given typed array object:
Int8Array[Symbol.species]; // function Int8Array()
Uint8Array[Symbol.species]; // function Uint8Array()
Float32Array[Symbol.species]; // function Float32Array()
Species in derived objects
In a derived collection object (e.g. your custom typed array MyTypedArray
), the MyTypedArray
species is the MyTypedArray
constructor. However, you might want to overwrite this, in order to return a parent typed array object in your derived class methods:
class MyTypedArray extends Uint8Array {
// Overwrite MyTypedArray species to the parent Uint8Array constructor
static get [Symbol.species]() { return Uint8Array; }
}
Specifications
Specification |
---|
ECMAScript Language Specification # sec-get-%typedarray%-@@species |
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