Over the last few articles in this series, we’ve learned how to use a handful of input types and validation attributes to natively validate forms.
We’ve learned how to use the Constraint Validation API to enhance the native browser validation process for a better overall user experience. And we wrote a polyfill to extend support all the way back to IE9 (and plug a few feature holes in some newer versions).
Now, let’s take what we’ve learned and apply it …
Form Validation – Part 4: Validating the MailChimp Subscribe Form is a post from CSS-Tricks