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Regular Expressions: Form Validation

One common use of regular expressions is for form validation. Using regular expressions, we can check to ensure that password use the correct characters, that email addresses contain domain information, and more. In this learning activity, we'll create various regular expressions to validate a number of fields in a registration form, making sure our front-end users can create accounts.

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Path Info

Level
Clock icon Intermediate
Duration
Clock icon 1h 0m
Last updated
Clock icon Aug 23, 2025

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Table of Contents

  1. Challenge

    Set the regex expression for the name value.

    Define a regular expression for the name_val.

  2. Challenge

    Set the regex expression for the email value.

    Define an email_var regular expression.

  3. Challenge

    Set the regex expression for the username value

    Define the regular expression for the username_val variable.

  4. Challenge

    Set the regex for the password value.

    Set password_val to an appropriate regular expression.

  5. Challenge

    Set the regex for the credit card value.

    Set credit_val to a regular expression to match a credit card.

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