Deep dive into advanced regular expressions. Learn the secrets of lookarounds, extraction techniques, and optimizing performance. Our complete Regex Hero interactive curriculum.
These interactive, in-depth tutorials are exclusive to RegexRef Pro members. Upgrade your account to access our entire interactive curriculum and track your progress cross-device.
Learn the basics of regular expressions, including character classes, literal matching, and how the regex engine reads your patterns from left to right.
Master the art of repetition. Learn how to use *, +, ?, and {} quantifiers efficiently, and anchor your matches with word boundaries and start/end line anchors.
Extract the data you need using capturing groups, ignore groups you don't with non-capturing groups, and implement logical OR conditions with alternation.
Learn how to match patterns based on their surrounding context without actually consuming characters. Positive and negative lookaheads and lookbehinds explained in deep detail.
Put all your new skills to the test in the final Regex Hero Challenge! Extract complex email formats from a messy block of text using everything you've learned.