We're looking for a user researcher to understand the needs of developers and designers. Is this you or someone you know? Check out the post: https://mzl.la/2IGzdXS

Nasi wolontariusze nie przetłumaczyli jeszcze tego artykułu na język Polski. Dołącz do nas i pomóż go przetłumaczyć!
Można także przeczytać artykuł w języku: English (US).

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 Latest Draft (ECMA-262)
The definition of 'get RegExp [ @@species ]' in that specification.
Draft  

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support Yes Yes49 No Yes Yes
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support Yes Yes Yes49 Yes Yes Yes

See also

Autorzy i etykiety dokumentu

Autorzy tej strony: wbamberg, schalkneethling, fscholz, arai, h4writer
Ostatnia aktualizacja: wbamberg,