The RegExp[@@species]
accessor property returns the RegExp
constructor.
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Description
The species
accessor property returns the default constructor for RegExp
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 RegExp
constructor for RegExp
objects:
RegExp[Symbol.species]; // function RegExp()
Species in derived objects
In a derived collection object (e.g. your custom regexp MyRegExp
), the MyRegExp
species is the MyRegExp
constructor. However, you might want to overwrite this, in order to return parent RegExp
objects in your derived class methods:
class MyRegExp extends RegExp { // Overwrite MyRegExp species to the parent RegExp constructor static get [Symbol.species]() { return RegExp; } }
Specifications
Specification |
---|
ECMAScript (ECMA-262) The definition of 'get RegExp [ @@species ]' in that specification. |
Browser compatibility
Desktop | Mobile | Server | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
@@species | Chrome Full support 50 | Edge Full support 13 | Firefox Full support 49 | IE No support No | Opera Full support 37 | Safari Full support 10 | WebView Android Full support 50 | Chrome Android Full support 50 | Firefox Android Full support 49 | Opera Android Full support 37 | Safari iOS Full support 10 | Samsung Internet Android Full support 5.0 | nodejs
Full support
6.5.0
|
Legend
- Full support
- Full support
- No support
- No support
- User must explicitly enable this feature.
- User must explicitly enable this feature.