How to select category elements without page reload?

Question

Yii

Hello. Tell me how to implement it: There are categories on the site, without reloading the page, you need to select the elements of the corresponding category when you click. The second day is how I study yii. While I was able to make a crutch through ajax. When clicking on a category, I just got the category id (li) and sent this id to the controller action, and there I already made a selection from the database by the category id, but I don’t like to write in a crutch. Therefore, I ask how to do it correctly) Thank you.

Answer 1

Goodnight.
Why do you call using ajax a crutch?
Use Pjax , comes with yii2.