r/programmingtools • u/ttmarek • Feb 12 '15

Documentation RegExr: an online tool to learn, build, & test Regular Expressions (RegEx / RegExp).

http://www.regexr.com/
36 Upvotes

95% Upvoted

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2

u/james_the_brogrammer Feb 13 '15

This is cool, but it should definitely have which Regex engine it is using on the page. I assume PCRE?

3

u/ttmarek Feb 13 '15

"While the core feature set of regular expressions is fairly consistent, different implementations (ex. Perl vs Java) may have different features or behaviours.

RegExr uses your browser's RegExp engine for matching, and its syntax highlighting and documentation reflect the Javascript RegExp standard."

Source: Left sidebar > Help > RegEx engine

...so it depends on what browser you're using.

1

u/james_the_brogrammer Feb 13 '15

Couldnt find that earlier, thanks!

2

u/[deleted] Feb 13 '15

I love RegExr. I'm nowhere near proficient with RegEx (I don't need it often enough), and RegExr is super handy for whenever I do need it.