Heads up! To view this whole video, sign in with your Courses account or enroll in your free 7-day trial. Sign In Enroll

Regular Expressions in JavaScript

Well done!

You have completed Regular Expressions in JavaScript!

Sign up for Treehouse Back to Library

What is a Regular Expression?

4:01 with Joel Kraft

A Regular Expression lets you match patterns in strings. We'll start with a simple example, using the Chrome browser's find functionality.

Resources

Related Discussions

Have questions about this video? Start a discussion with the community and Treehouse staff.

Sign up

    Related Discussions

    Have questions about this video? Start a discussion with the community and Treehouse staff.

    Sign up

    Hi, I'm Joel, a JavaScript developer and teacher at Treehouse. 0:00
    Welcome to Regular Expressions in JavaScript. 0:00
    Have you ever wondered how search bars find the text you type in? 0:04
    Or maybe when you are filling out a form, 0:07
    it told you had entered an invalid email address. 0:09
    How did it know? 0:13
    Regular expressions is the answer. 0:15
    In this course, I'll show you what regular expressions are. 0:18
    And we'll get some practice using them. 0:21
    Then we'll build a form that uses regular expressions to validate the data typed in. 0:23

    You need to sign up for Treehouse in order to download course files.

    Sign up

      You need to sign up for Treehouse in order to set up Workspace

      Sign up