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Regular expressions basics in JavaScript: pattern matching, flags, groups, and replace/substitution

JavaScript regexes support pattern matching, modifiers, capture groups, and replacement operations for text processing.

JavaScript Medium Theory

Regular expressions basics in JavaScript: pattern matching, flags, groups, and replace/substitution

JavaScript regexes support pattern matching, modifiers, capture groups, and replacement operations for text processing.

  • Flags change matching behavior
  • Groups extract or organize matches
  • Replacement supports templates and callbacks

Regular expressions basics in JavaScript: pattern matching, flags, groups, and replace/substitution