Regex Cheatsheet - Regular Expression Quick Reference
Quick reference for regular expression patterns. Character classes, quantifiers, anchors, and common patterns.
Unicode Escape \u{...}
EscapeMatches Unicode character via hex code point
Pattern
\u{1F600}Syntax
Explanation
Use the u flag. \u{1F600} matches the 😀 emoji.
Examples
\u{1F600}Match 😀 emoji
Matches: 😀
[\u{4E00}-\u{9FFF}]Match CJK character range
Matches: 中, 文
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