Change variable value after a click

I'm working in a django view and I'd like to duplicate the
items_rating value of myview when I click to "see more categories" in
the template. All of this without refreshing the web.

I think that I have to use jquery and Ajax to perform this action but
I don't know how to do it. The examples I read about were about form
submissions and I couldn't find a way to use it.

views.py:

def myview(request):
items_rating = 5
html:

<a href="#">See more categories</a>

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