When someone has just barely crossed the "hello world" stage, I don't think they should be thinking about asynchronous XHR requests, or be pulling up user experience research to find the optimal shade of red for making input validation errors appear less aggressive to middle aged women with a bachelor degree in communications who are part-time employed in marketing.

Let's start with getting data from the form to your back-end, and once we've got those must-have basics down, then we can start introducing the nice-to-have bits.