Learn the Basics of Regular Expressions
Get a taste of regular expressions (regex), a powerful search pattern language to quickly find the text you’re looking for.
Skill level
BeginnerTime to complete
Approx. 1 hoursCertificate of completion
Included with paid plansPrerequisites
None
About this course
Regular expressions, or regex for short, are one of the most powerful and applicable techniques in programming. We can use regular expressions to search for and find patterns in strings. They can be used in nearly every language, and they allow us to validate user input, perform search tasks, and even test code. Learn the rules of regular expressions so that you can apply them in any language of your choosing.
Syllabus
Introduction to Regular Expressions
Get a taste of regular expressions (regex), a powerful search pattern language to quickly find the text you’re looking for.
Hands-on learning
Don’t just watch or read about someone else coding — write your own code live in our online, interactive platform. You’ll even get AI-driven recommendations on what you need to review to help keep you on track.
Reviews from learners
- The progress I have made since starting to use codecademy is immense! I can study for short periods or long periods at my own convenience - mostly late in the evenings.ChrisCodecademy Learner @ USA
- I felt like I learned months in a week. I love how Codecademy uses learning by practice and gives great challenges to help the learner to understand a new concept and subject.RodrigoCodecademy Learner @ UK
- Brilliant learning experience. Very interactive. Literally a game changer if you're learning on your own.John-AndrewCodecademy Learner @ USA
Our learners work at
Unlock additional features with a paid plan
Practice Projects
Guided projects that help you solidify the skills and concepts you're learning.Assessments
Auto-graded quizzes and immediate feedback help you reinforce your skills as you learn.Certificate of Completion
Earn a document to prove you've completed a course or path that you can share with your network.
Join over 50 million learners and start Learn the Basics of Regular Expressions today!
Start
Frequently asked questions about the Basics of Regular Expressions
Regular expressions (RegExs) are sequences of characters defining a pattern of text that needs to be found.