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The RegExp[@@species]
accessor property returns the RegExp
constructor.
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Syntax
RegExp[Symbol.species]
Description
The species
accessor property returns the default constructor for RegExp
objects. Subclass constructors may over-ride it to change the constructor assignment.
Examples
The species
property returns the default constructor function, which is the RegExp
constructor for RegExp
objects:
RegExp[Symbol.species]; // function RegExp()
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 | Status | Comment |
---|---|---|
ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'get RegExp [ @@species ]' in that specification. |
Standard | Initial definition. |
ECMAScript Latest Draft (ECMA-262) The definition of 'get RegExp [ @@species ]' in that specification. |
Draft |
Browser compatibility
Desktop | Mobile | Server | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Basic support | Chrome Full support Yes | Edge Full support Yes | Firefox Full support 49 | IE No support No | Opera Full support Yes | Safari Full support Yes | WebView Android Full support Yes | Chrome Android Full support Yes | Edge Mobile Full support Yes | Firefox Android Full support 49 | Opera Android Full support Yes | Safari iOS Full support Yes | Samsung Internet Android Full support Yes | 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.