Regex Cheatsheet
Character Classes
[abc]— Any of a, b, or c[^abc]— Not a, b, or c[a-z]— Any lowercase letter[A-Za-z]— Any letter\d— Digit [0-9]\D— Non-digit\w— Word character [a-zA-Z0-9_]\W— Non-word character\s— Whitespace\S— Non-whitespace.— Any character
Quantifiers
*— 0 or more+— 1 or more?— 0 or 1{n}— Exactly n{n,}— n or more{n,m}— Between n and m
Anchors
^— Start of string$— End of string\b— Word boundary\B— Non-word boundary
Groups
(abc)— Capturing group(?:abc)— Non-capturing group(?=abc)— Lookahead(?!abc)— Negative lookahead
Escaping
Escape these special chars:. * + ? ^ $ { } [ ] ( ) | \
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