html, css and js only

What are you most proud of, and what would you do differently next time?

I didn't know any thing about validating forms using js and the preventing submission and sending data using ajax, I feel I have soooo much to learn .

What challenges did you encounter, and how did you overcome them?

I spent the whole day searching for solutions.

What specific areas of your project would you like help with?

Is this the write approach for implementation of this project? 1- prevent form validation using novalidate HTML attribute. 2-checking validity using constraint validation API. 3-prevent form submission so the success message can show. 4-send form data using FormDate object and XMLHttpRequest.