Why i can not send data with jQuery and Ajax?

I have a problem with a form in my ionic app, i was coding a template with a sign up form, but i can not send any data with that, i am trying to do that with jQuery, i was thinking maybe is something about ionic framework, i don’t want to do it with angular because i am a new member in that.
If someone could help me, i will be very grateful

You don’t provide enough information to get help like is it in desktop browser or real device?
You should provide some code sample in Codepen.

Anyway you’d rather use and learn angular otherwise you won’t ahcieve much with Ionic.
There are plenty of examples for signup form.