Tip: consider adding default duration, iteration, delay for the init method / constructor + add the rootMargin also as an option

[hidegh]

These global settings should be then overridable via the data elements.
defaults:

• 1.5 ~ 2 sec duration
• iteration = 1
• repeatOnScroll = true | false ❗new option, if true whenever the element scrolls into view, the animation should be played again (default in case of AOS.js)
• no delay

Should replace #1, #11 too.

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Otherwise great, simple and clean code! I like it! 👍

Since AOS uses own styles and has a lot of issues,
So does WOW.js,
And neither of them is alive,

This could be a solution, especially with the animate.css!

Please keep the solution simple, easy to read! I was desperate and to either use wow.js or create one with intersection and mutation observer, but thanx to you, I just can focus on real productive work.

Maybe you should add a call to developers who use it to STAR it on GH and eventually give a great word on social media by writing a simple post, etc. I surely will!