GSAP between multiple pages

[ovlack]

Hi everyone, I am quite new to JavaScript and GSAP. I'm currently developing a new personal site, with Bootstrap, GSAP and Lenis. I've split up my few JavaScript files up now. 

 

this is a snippet of gsap.js - it currently contains all the relevant GSAP animations throughout the website. Most of these are on my "index" page, with a few (not included) on my "about" page. When I navigate to the "about" page, a lot of GSAP warnings are logged about an element not being found, that's okay, makes sense. I imagine most people won't see that unless they know about browser dev tools. Are there optimal ways to split up page-specific animations? Is it "easier" to keep it one file? I understand splitting them up too. What I would like to do is consolidate some selectors into general ones cause I plan to use the same simple fade animation on most elements. 

// gsapAnimations.js

import { gsap } from "gsap"

import { ScrollTrigger } from "gsap/ScrollTrigger"

 

// Register ScrollTrigger with GSAP

gsap.registerPlugin(ScrollTrigger)

 

// Refresh ScrollTrigger on load and resize

window.addEventListener("load", () => ScrollTrigger.refresh())

window.addEventListener("resize", () => ScrollTrigger.refresh())

 

// Function to initialize GSAP animations

export function initGSAPAnimations() {

  console.log("Initializing GSAP animations...")

  // Example animation

  gsap.from([".hero__landing", ".img__hero"], {

    y: 100,

    opacity: 0,

    duration: 1,

    ease: "power2.out",

    scrollTrigger: {

      trigger: ".hero__landing",

      start: "top bottom",

      end: "top top",

      scrub: false,

      markers: false,

      toggleActions: "play none none reverse",

    },

  })

 

  gsap.utils.toArray(".row-stacked-1").forEach((row) => {

    const leftCol = row.querySelector(".col-stacked-left") // Target the left column in this row

 

    ScrollTrigger.create({

      trigger: row, // The row-stacked-1 acts as the trigger

      start: "top center", // Adjust starting point

      end: "bottom center", // Adjust ending point

      pin: leftCol, // Pin the left column within this row

      pinSpacing: true, // Keep spacing to avoid layout shift

      markers: false, // Debugging (remove in production)

    })

  })

 

  // Animate the header and text of wrapper__experience

  gsap.from(".wrapper__about-intro h2, .wrapper__about-intro p", {

    scrollTrigger: {

      trigger: "#section-projects-wrapper", // Triggered by the projects section

      start: "bottom 75%", // When the bottom of projects hits the bottom of the viewport

      markers: false, // Debug markers (remove in production)

      toggleActions: "play none none reverse",

    },

    opacity: 0,

    y: 30,

    duration: 1,

    ease: "power2.out",

    stagger: 0.3, // Stagger for header and paragraph

  })

 

  // Animate the list items in the experience section

  gsap.utils.toArray(".list-group-item").forEach((item, i) => {

    gsap.from(item, {

      scrollTrigger: {

        trigger: "#section-projects-wrapper", // Triggered by the projects section

        start: "bottom 75%", // When the bottom of projects hits the bottom of the viewport

        markers: false, // Optional debug markers

        toggleActions: "play none none reverse",

      },

      opacity: 0,

      y: 20,

      duration: 0.8,

      ease: "power2.out",

      delay: i * 0.2, // Staggered effect for list items

    })

  })

}

[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. ✅