Regex Basics

Architecture Digest

Jan 12, 2023 · Frontend Development

Comprehensive Guide to Regular Expressions in JavaScript

This article provides a thorough introduction to JavaScript regular expressions, covering their definition, syntax, flags, meta‑characters, assertions, RegExp object properties and methods, capturing and non‑capturing groups, named groups, greedy vs. lazy matching, back‑references, and common pitfalls, all illustrated with clear code examples.