📘RegExp

Regular Expressions

JSvalueobject ⟩ regex ⟩

Regular expressions are string patterns and used with:

\w    word character    = [a-zA-Z0-9_]
\s    whitespace        

👉 regular expression cheatsheet

  • By default, regular expressions work on code units, not actual characters

  • Characters that are composed of two code units (e.g. emojis) behave strangely.

  • Enable "/u" flag to support Unicode in regular expressions.

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