#Regex javascript update

The world's greatest regex tester includes XRegExp as a supported flavor. See the README on GitHub в‡Ё for more examples of using named capture with XRegExp.exec and XRegExp.replace.

#Regex javascript update

XRegExp 4.1.0 and later allow introducing the new behavior without upgrading to XRegExp 5 by running XRegExp.install('namespacing').ДЇollowing is the most commonly needed change to update code for the new behavior: // Change thisД¬onst name = XRegExp.exec(str, regexWithNamedCapture).name Д¬onst name = XRegExp.exec(str, regexWithNamedCapture).groups.name To restore the old handling so you don't need to update old code, run the following line after importing XRegExp: XRegExp.uninstall('namespacing') XRegExp 5 introduced a breaking change where named backreference properties now appear on the result's groups object (following ES2018), rather than directly on the result. Named Capture Breaking Change in XRegExp 5 In Node.js: const XRegExp = require('xregexp') In browsers (bundle XRegExp with all of its addons): There is a tiny extra cost when compiling a pattern for the first time.

Therefore regexes built with XRegExp perform just as fast as native regular expressions. XRegExp compiles to native RegExp objects. Offical addons support Unicode, recursive matching, and grammatical patterns. Supports addons that add even more new regex syntax, flags, and methods.Provides a suite of functions that make complex regex processing easier.

Adds new regex flags: s, to make dot match all characters x, for free-spacing and line comments n, for explicit capture mode and A, for astral mode (full 21-bit Unicode matching).Adds new regex and replacement text syntax, including comprehensive support for named capture.-> ['', 'Check out more usage examples on GitHub в‡Ё. XRegExp lets you write regexes like this: // Using named capture and flag x (free-spacing and line comments)Д¬onst date = XRegExp(`(? Over the years, many of XRegExp's features have been adopted by new JavaScript standards (named capturing, Unicode properties/scripts/categories, flag s, sticky matching, etc.), so using XRegExp can be a way to extend these features into older browsers. It supports ES5+ browsers (including Internet Explorer 9+), and you can use it with Node.js or as a RequireJS module. XRegExp supports all native ES6 regular expression syntax. XRegExp is also a regex utility belt with tools to make your grepping and parsing easier, while freeing you from regex cross-browser inconsistencies and other annoyances. You get modern syntax and flags beyond what browsers support natively. XRegExp provides augmented (and extensible) JavaScript regular expressions.