JavaScript Regex Tester: Matches & Groups
About JavaScript Regex Tester: Matches & Groups
Test JavaScript regular expressions against sample text. Inspect matches, capture groups, and positions to debug patterns directly in your browser.
How to use this tool
Enter a JavaScript regular expression and test text, select the flags you need, then inspect matches, capture groups, and positions.
What to know
Regular expression syntax varies between languages. A pattern that works in JavaScript may behave differently in PCRE, Python, or .NET.