Maybe a silly question but do I need JSON if I am going to use a JS back end?

I learned PHP and Python at school, but I never started with AJAX and JSON. So that's why this question. At the moment I am learning FS JS with the MEAN stack.Any tips and advice are welcome :)! And thanks in advance already :D!

Submitted July 13, 2018 at 09:09AM by w3bcrowf3r