Bummer! This is just a preview. You need to be signed in with an account to view the entire instruction.
Well done!
You have completed (UPI) Chapter 6: Navigating with HTML Links and Structuring Data with Tables!
Instruction
Example: Using Regular Expressions in HTML Forms
Here’s a complete form using various regular expressions to validate user input.
<form>
<!-- Username must be alphanumeric and 6-12 characters -->
<label for="username">Username (6-12 characters):</label>
<input type="text" id="username" name="username" required
pattern="[a-zA-Z0-9]{6,12}"
title="Username should be 6-12 characters and only alphanumeric."...