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Learn Regular expressions in JavaScript

Study Regular expressions with focused JavaScript lessons from Learn JavaScript Online. This topic hub collects 17 lessons in the Additional articles section.

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Lessons in this JavaScript topic

  1. 7.1Patterns and flags
  2. 7.2Character classes
  3. 7.3Unicode: flag "u" and class \p{...}
  4. 7.4Anchors: string start ^ and end $
  5. 7.5Multiline mode of anchors ^ $, flag "m"
  6. 7.6Word boundary: \b
  7. 7.7Escaping, special characters
  8. 7.8Sets and ranges [...]
  9. 7.9Quantifiers +, *, ? and {n}
  10. 7.10Greedy and lazy quantifiers
  11. 7.11Capturing groups
  12. 7.12Backreferences in pattern: \N and \k<name>
  13. 7.13Alternation (OR) |
  14. 7.14Lookahead and lookbehind
  15. 7.15Catastrophic backtracking
  16. 7.16Sticky flag "y", searching at position
  17. 7.17Methods of RegExp and String