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Regex notes for developers

Master Regex with a curated set of 3 developer notes — core concepts, patterns, and interview prep. Maintained by the DevRecall team.

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Regex

Regular Expressions

Regular Expressions Syntax Reference # Character classes . any character except newline \d digit [0-9] \D non-digit \w word char [a-zA-Z0-9_] \W non-word char \

Regex

Regex Fundamentals

Regex Fundamentals Regular expressions are patterns for matching character combinations in strings. In JavaScript, regex literals are written as /pattern/flags

Regex

Common Patterns

Common Regex Patterns A collection of battle-tested patterns for validating and extracting common data formats in JavaScript and TypeScript. Validation Patterns

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