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jQuery Smooth Scroll doesn't work with ScrollTrigger

Murugan S test
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Go to solution Solved by GreenSock,

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Welcome to the forums, @Murugan S. jQuery Smooth Scroll and smooth-scrollbar are not GreenSock products, so we can't really support them here  but the problem in your demo is that you're using jQuery Smooth Scroll to animate the "real" scroll position of the page, but you're using smooth-scrollbar to do scroll-jacking (fake scroll), and wiring that to ScrollTrigger so they're not synchronized at all. In other words, jQuery Smooth Scroll is scrolling the WRONG thing. Plus I think your offset that you're calculating is likely incorrect as well because again, it's based on positioning of the "real" scroll whereas you're doing fake-scroll stuff.

 

I would strongly recommend NOT using jQuery, much less jQuery Smooth Scroll. If your goal is to animate the scroll position, you can use GSAP's ScrollToPlugin, sorta like:

gsap.to(bodyScrollBar, {scrollTop: "+=" + $("#animatedsection").offset().top, duration: 1});

Good luck!

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Based on the logic I see in your code...

ScrollTrigger.create({
  trigger: ".purple",
  start: () => "top -" + (window.innerHeight*(images.length-0.5)),
  scroller: ".scroller",
  onEnter: () => document.body.classList.add("your-class"),
  onLeaveBack: () => document.body.classList.remove("your-class")
});

 

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