Dynamic Stagger | Swiper JS

[Shapes]

Hey!

I am using a Swiper with SwiperJS with scrollTrigger animation.

 

My Problem is, that i want to stagger the slides. This does work, but it´s always using the value 1 to start with. Often the index one is in the center of the screen, but i want to start on the left side. I can get the Index of the left side using the swiper.realIndex but when i pass the var into the stagger, it will always use the inital value 1 and never updates. Unfortunatly repeatRefresh() doesnt work on stagger.

Any Solution?

Here is my code:

 

 const logoSlides = document.querySelectorAll('.intro--logos .swiper-slide')
 
 let refIndex = 1;

 var refAnimation = gsap.fromTo(logoSlides, {     
      y: 100,
    },
                {
      y: 0,
      delay: 1.1,
      duration: 0.2,
      stagger: {
        from: refIndex,
        each: 0.1,
      },
      scrollTrigger: {
        trigger: ".intro--main",
        scrub: false,
        markers: true,
        start: "top 20%",
        end: "bottom center",
        toggleActions: 'play reverse play play',
      }
    })
  
 refSwiper.on('slideChange', function () {
  console.log('slide changed', this.realIndex);
 	refIndex = this.realIndex;
});

 

[GSAP Helper]

Without a minimal demo, it's very difficult to troubleshoot; the issue could be caused by CSS, markup, a third party library, a 3rd party script, etc. Would you please provide a very simple CodePen or Stackblitz that illustrates 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 dependencies as possible. Start minimal and then incrementally add code bit by bit until it breaks. Usually people solve their own issues during this process! If not, at least we have a reduced test case which greatly increases your chances of getting a relevant answer.

 

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

that loads all the plugins. Just click "fork" at the bottom right and make your minimal demo: 

 

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: 

• React (please read this article!)
• Next
• Svelte
• Sveltekit
• Vue
• Nuxt

 

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. ✅