Learn Regular Expressions

Join 4647 other students

Sign in to get

Access to 30+ free courses

New courses added monthly

Weekly coding challenges

Huge discord community

Exclusive chat access

Subscribe to access!62% covid discount

Get access to this course and ALL other Scrimba courses at great value. Our 30-day money back guarantee makes this risk free for you.

Career Path includes

75+ hours of content

100s of coding challenges

Exclusive Study Group access

HTML, CSS, JS & React

Getting Hired section

30-day money-back guarantee

Subscribe now!62% covid discountSubscribe to access with 62% covid discount.

with freeCodeCamp

4647 students enrolled

Course level: Intermediate

This tutorial teaches you regex in JavaScript through 34 screencasts. It explains regular expressions step-by-step from basic to advanced so that you don't fall off along the way. This ensures that you finally learn regex once and for all.

What's inside

This course contains 35 interactive screencasts

▼

Learn Regular Expressions

35 lessons - 45 min

1. Regular Expressions Intro

2. Regex Tutorial: Using the Test Method

3. Introducing The Frontend Developer Career Path

4. Regex Tutorial: Match Literal Strings

5. Regex Tutorial: Match a Literal String with Different Possibilities

6. Regex Tutorial: Ignore Case While Matching

7. Regex Tutorial: Extract Matches

8. Regex Tutorial: Find More Than the First Match

9. Regex Tutorial: Match Anything with Wildcard Period

10. Regex Tutorial: Match Single Character with Multiple Possibilities

11. Regex Tutorial: Match Letters of the Alphabet

12. Regex Tutorial: Match Numbers and Letters of the Alphabet

13. Regex Tutorial: Match Characters that Occur One or More Times

14. Regex Tutorial: Match Characters that Occur One or More Times

15. Regex Tutorial: Match Characters that Occur Zero or More Times

16. Regex Tutorial: Find Characters with Lazy Matching

17. Regex Tutorial: Find One or More Criminals in a Hunt

18. Regex Tutorial: Match Beginning String Patterns

19. Regex Tutorial: Match Ending String Patterns

20. Regex Tutorial: Match All Letters and Numbers

21. Regex Tutorial: Match Everything But Letters and Numbers

22. Regex Tutorial: Match All Numbers

23. Regex Tutorial: Match All Non-Numbers

24. Regex Tutorial: Restrict Possible Usernames

25. Regex Tutorial: Match Whitespace

26. Regex Tutorial: Match Non-Whitespace Characters

27. Regex Tutorial: Specify Upper and Lower Number of Matches

28. Regex Tutorial: Specify Only the Lower Number of Matches

29. Regex Tutorial: Specify Exact Number of Matches

30. Regex Tutorial: Check for All or None

31. Regex Tutorial: Positive and Negative Lookahead

32. Regex Tutorial: Reuse Patterns Using Capture Groups

33. Regex Tutorial: Use Capture Groups to Search and Replace

34. Regex Tutorial: Remove Whitespace from Start and End

35. Regex Tutorial: Regular Expressions Outro

You'll learn

Regex basics

Test matches

Literal strings

Case insensitive

Single character

Match letters

Match numbers

Single match

Multiple matches

Wildcards

Lazy matching

Begins with match

Ends with match

Inclusive match

Exclusive match

Whitespace match

Lookahead

Capture groups

Prerequisites

Before taking this course, you should have a basic understanding of JavaScript. Here’s our suggested resource to get you up to speed.

The course creator

Meet your teacher

freeCodeCamp

freeCodeCamp is a community that helps you learn to code, then get experience by contributing to open source projects used by nonprofits. Their Scrimba sceencasts are recorded by their brilliant instructor Beau Carnes and are based on their core curriculum.

Follow me on twitter

Why this course rocks

This course features freeCodeCamp's Regular Expressions curriculum recorded as Scrimba screencasts. It introduces you to regular expressions (also called regex or regexp) through the lens of JavaScript. And as this is a Scrimba course, you'll be able to experiment with the expressions whenever you want. This is crucial when learning regex, as there are a lot of details to remember. Interacting with the code makes the knowledge stick, as opposed to simply watching normal video tutorials.

About freeCodeCamp

The lectures are recorded by Beau Carnes. Beau is the man behind some of the most popular courses at freeCodeCamp's YouTube channel, so you'll be in good hands. He explains concepts clearly and thoroughly, but without wasting your time.

Join the Scrimba community chat

Learning alone can be lonely. Click here to join our Discord server and connect with other Scrimba learners!