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Overlay Zoom Effect Timeline

Petru Tirla test
Moderator Tag

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Hello, people!

Just started using GSAP, and I just followed some YouTube tutorial, about an Overlay Zoom Effect with Timeline.

But I encountered a glitch, let's say. When running the animation it goes well until reaching the "scroller-end" marker.

And after that it's like it is refreshing or something. You will see on the video.

Any Idea on why this happens?

This is the video:

This is the code: 


function run_gsap(){
    let gsap_loaded = setInterval(function(){
            const eleBuilder = document.querySelector('body').classList.contains("elementor-editor-active");
            const screenSize = window.screen.width >= 1025;
     if(window.gsap && window.ScrollTrigger && !eleBuilder && screenSize){
 }, 500);

    function overlay_zoom(){
    const tl = gsap.timeline({
    scrollTrigger: {
      trigger: '.content-scroll',
      start: '70px top',
      end: '750px center',
      pin: true,
        tl.to('.overlay-zoom', {scale:100, duration:1});
        tl.to('.scroll-headline', {y: -20, opacity:1}, '<20%');
        tl.to('.scroll-des', {y: -20, opacity:1},'<50%');
        tl.to('.scroll-button',{y: -20, opacity:1},'<50%' );
        tl.to('.overlay-zoom', {display:'none'}, '<');


<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/3.9.0/gsap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/3.9.0/ScrollTrigger.min.js"></script>


Screenshot 2023-09-11 191954.png

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Hi @Petru Tirla and welcome to the GreenSock forums!


It's pretty tough to troubleshoot without a minimal demo - the issue could be caused by CSS, markup, a third party library, your browser, an external script that's totally unrelated to GSAP, etc. Would you please provide a very simple CodePen or Stackblitz that demonstrates the issue? 


Please don't include your whole project. Just some colored <div> elements and the GSAP code is best. See if you can recreate the issue with as few dependancies as possible. If not, incrementally add code bit by bit until it breaks. Usually people solve their own issues during this process! If not, then at least we have a reduced test case which greatly increases your chances of getting a relevant answer.


Here's a starter CodePen that loads all the plugins. Just click "fork" at the bottom right and make your minimal demo

See the Pen aYYOdN by GreenSock (@GreenSock) on CodePen


Using a framework/library like React, Vue, Next, etc.? 

CodePen isn't always ideal for these tools, so here are some Stackblitz starter templates that you can fork and import the gsap-trial NPM package for using any of the bonus plugins: 


Please share the StackBlitz link directly to the file in question (where you've put the GSAP code) so we don't need to hunt through all the files. 


Once we see an isolated demo, we'll do our best to jump in and help with your GSAP-specific questions. 

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