Question 1

What regex flavor does this tester use?

Accepted Answer

This tester uses the JavaScript (ECMAScript) regex engine built into your browser. It supports most common regex features including lookaheads, backreferences, named capture groups, and the s (dotAll) flag in modern browsers.

Question 2

What does the global flag do?

Accepted Answer

The global flag (g) makes the regex find all matches in the test string instead of stopping after the first one. Without it, only the first match is returned.

Regex Tester