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Form Validator

Skill Level: Intermediate
Time Limit: 20-30 minutes

This challenge may take you more or less than the allotted time depending on your familiarity with JQuery selectors, javascript & the DOM.

In most apps, validation takes places both on the client & server if we're not including data type checks, foreign key constraints or other forms of validation that happen in our database.

Question: Why do we do client-side validation?


You have been given a simple login form in index.html. Your goal is to create a custom form validation script validator.js that prevents submission of the form and displays the correct error message if our user has entered invalid data.

  • Do not edit the index.html or style.css files
  • A valid email address (this could be tricky)
  • Password should be at least 8 characters long
  • Password should contain at least one capital letter
  • Password should contain at least one number (0-9)

Extra Credit

If you're feeling especially daring, complete this challenge in coffeescript. Be sure to include your compiled javascript & original coffee files in your feature branch!

Question: If you have an interest in professional Rails development, why is it probably a good idea to do this drill in Coffee instead of Javascript :)?



Write your own client-side form validation



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