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Amini

ScrollTrigger flashes like a white background

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Hi, recently I asked a question about scrollTriger. We were able to successfully apply it on the page. There is one small issue that whenever the scroll finishes, a white background flashes immediately and goes away. I don't understand what can be the reason. I'm providing the code which will help you. I'm not able to deploy website for now, but I may in few hours or may not. The link for my previous related question. Btw, I'm using vue2.
 

<section class="about-story relative pb-[100px] xl:pb-[300px] mb-[80px] xl:mb-[120px]">
  <gallery />
</section>

// Inside gallery.vue
<div class="story-gallery">
  <div class="gallery flex flex-nowrap wrapper">
      <div v-for="(img, index) in gallery" :key="index" :class="img.class" class="flex-shrink-0 child-wrap">
          <img :src="`/aboutUs/${img.src}.png`" :alt="img.alt" />
      </div>
  </div>
</div>

 

gsap.registerPlugin(ScrollTrigger);
const sections = gsap.utils.toArray(".child-wrap");
let maxWidth = 0;
const getMaxWidth = () => {
  maxWidth = 0;
  sections.forEach((section) => {
    maxWidth += section.offsetWidth;
  });
};
getMaxWidth();
ScrollTrigger.addEventListener("refreshInit", getMaxWidth);
gsap.to(sections, {
  x: () => `-${maxWidth - window.innerWidth}`,
  ease: "none",
  scrollTrigger: {
    trigger: ".wrapper",
    pin: true,
    scrub: true,
    end: () => `+=${maxWidth}`,
    invalidateOnRefresh: true
  }
});
sections.forEach((sct, i) => {
  ScrollTrigger.create({
    trigger: sct,
    start: () => 'top top-=' + (sct.offsetLeft - window.innerWidth / 2) * (maxWidth / (maxWidth - window.innerWidth)),
    end: () => '+=' + sct.offsetWidth * (maxWidth / (maxWidth - window.innerWidth)),
  });
});

 

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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 CodeSandbox that demonstrates the issue? 

 

Please don't include your whole project. ⚠️ Just some colored <div> elements and the GSAP code is best (avoid frameworks if possible). 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

 

If you're using something like React/Next/Nuxt/Gatsby or some other framework, you may find CodeSandbox easier to use. 

 

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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@GSAP Helper Thanks for your valuable time. I will try to provide an example so that would be easier for you.

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@GSAP Helper Hi again. I was able to deploy it. here is the link to the codesandbox. Thanks for spending your time reading this.

 

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Looks like I solved the problem. I had added this line of code which was causing it.

* {
  transition: 0.1s ease all;
}

 

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Ah yes, that would explain it. Never have CSS transitions applied to the same properties you're controlling with GSAP. :) Glad you figured it out. 🙌

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