Join the AI Workshop to learn more about AI and how it can be applied to web development. Next cohort February 1st, 2026
The AI-first Web Development BOOTCAMP cohort starts February 24th, 2026. 10 weeks of intensive training and hands-on projects.
Given a regex, you can inspect its properties:
sourcethe pattern stringmultilinetrue with themflagglobaltrue with thegflagignoreCasetrue with theiflaglastIndex
/^(\w{3})$/i.source //"^(\\d{3})(\\w+)$"
/^(\w{3})$/i.multiline //false
/^(\w{3})$/i.lastIndex //0
/^(\w{3})$/i.ignoreCase //true
/^(\w{3})$/i.global //falseLessons in this unit:
| 0: | Introduction |
| 1: | Introduction |
| 2: | Anchoring |
| 3: | Match Items in Ranges |
| 4: | Matching a Range Item Multiple Times |
| 5: | Negating a Pattern |
| 6: | Meta Characters |
| 7: | Regular Expressions Choices |
| 8: | Quantifiers |
| 9: | Optional Items |
| 10: | Groups |
| 11: | Capturing Groups |
| 12: | Using match and exec Without Groups |
| 13: | Noncapturing Groups |
| 14: | Flags |
| 15: | ▶︎ Inspecting a Regex |
| 16: | Escaping |
| 17: | String Boundaries |
| 18: | Replacing |
| 19: | Greediness |
| 20: | Lookaheads |
| 21: | Lookbehinds |
| 22: | Unicode |
| 23: | Unicode Property Escapes |
| 24: | Examples |