Regular Expressions

Introduction

• Regular Expressions in 100 Seconds • Fireship 📺
  • Regex Cheat Sheet • Fireship 📖
• 🎓 Regex Tutorial: Learn Regular Expressions • Free course by Scrimba that teaches you regex in JavaScript in 34 screencasts
• JavaScript: Learn Regular Expressions for Beginners • Brandon Morelli 📖
• JavaScript Regular Expression Cheatsheet • Debuggex 📖

Overlapping matches

• How to do overlapping matches with regular expressions • using lookahead (?=) and lookbehind (?<=) assertions to find matches without consuming them, then using capture groups (()) and String.matchAll() to detect those matches with JS • Matias Kinnunen 📖

Testing

• RegExr • Learn, build and test RegEx 🛠️
• regex101: build, test, and debug regex