javascript - Scroll to the specified height and start to play animations in turn. This is how the QQPC official website does it. Which open source library should be used to make it more convenient?

Question

http://im.qq.com/pcqq/

Let’s study it

Answer 1

wow.js, you can take a look, it needs to be used with animation.css.
https://github.com/matthieua/WOW
https://daneden.github.io/ani...

oppo’s example: http://www.dowebok.com/demo/1...
In addition, you can also write it yourself.

Answer 2

Written by myself, monitor the scroll bar when it reaches the scroll height, and give a class to the elements that need animation. This class is a css animation

Answer 3

You can write it directly with CSS3, combined with JS

Answer 4

The correct answer upstairs can be achieved with WOW.js. When reaching the current height, an animation class will be added

Answer 5

scrollReveal.js This is what I use. http://dreamwq.com/home/ You can feel it

Answer 6

Written by yourself is scrollTop