How to do Ajax upload?

Question

AJAX

Hello, I have a question about loading.
Task:
For example, there are 100500 divs, you need to show the first 50 divs, then load the remaining divs from the existing ones when scrolling the page .
I'm new, I hope someone can explain how to do this.

Answer 1

jquery , vanilla . _ And I see you do not mark the answers with solutions and give advice. People stop helping