Scrolling + Animation

Question

I want to connect my animation with the scrolling.
But I dont know how 😬
pls help me

Answer 1

May be this is what you want.....

$(document).ready(function(){
$("body").scroll(function(){
$(”#item”).css("opacity",1);
});
});

It is JQuery...on scroll function
https://api.jquery.com/scroll/

Answer 2

https://code.sololearn.com/W1KxPfPJX9j6/?ref=app