get RegExp[@@species]
The RegExp[@@species]
accessor property returns the RegExp
constructor.
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 2017 Draft (ECMA-262) The definition of 'get RegExp [ @@species ]' in that specification. |
Draft |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | ? | 49 (49) | ? | ? | ? |
Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|
Basic support | ? | ? | 49.0 (49) | ? | ? | ? |
See also
License
© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/javascript/reference/global_objects/regexp/@@species