Need help with React footprints animation Scrolltrigger refresh not working

[James23]

I have issues with my code as the footprints will appear if I change some of my code .... but as soon as I refresh the page it disappears and no longer comes back. 

 

If anyone could help would be much appreciated and if you need more code from me let me know

 

 

<div className="a footprint"></div>

<div className="b footprint"></div>

<div className="c footprint"></div>

<div className="d footprint"></div>

<div className="e footprint"></div>

<div className="f footprint"></div>

<div className="g footprint"></div>

<div className="h footprint"></div>

<div className="i footprint"></div>

<div className="j footprint"></div>

<div className="k footprint"></div>

<div className="l footprint"></div>

<div className="m footprint"></div>

<div className="n footprint"></div>

<div className="o footprint"></div>

<div className="p footprint"></div>

 

<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/3.11.3/gsap.min.js"></script>

<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/3.11.3/ScrollTrigger.min.js"></script>

 

.footprint{

background-image:url("https://www.pcsoleil.fr/footprint.svg");

width:50px;

height:50px;

background-size: contain;

background-repeat: no-repeat;

transform: rotate(390deg);

position: absolute;

left: 600px;

opacity: 0;

 

}

 

.a{top:310px;}

.b{top:200px;left: 700px;transform: rotate(430deg);}

.c{top:150px;left: 850px;transform: rotate(430deg);}

.d{top:200px;left: 1000px;transform: rotate(141deg);}

.e{top:350px;left: 1100px;transform: rotate(135deg);}

.f{top:550px;left: 1300px;transform: rotate(150deg);}

.g{top:750px;left: 1350px;transform: rotate(190deg);}

.h{top:900px;left: 1300px;transform: rotate(176deg);}

.i{top:1100px;left: 1220px;transform: rotate(190deg);}

.j{top:1600px;left: 1100px;transform: rotate(200deg);}

.k{top:1740px;left: 1070px;transform: rotate(209deg);}

.l{top:1980px;left: 900px;transform: rotate(205deg);}

.m{top:2070px;left: 800px;transform: rotate(205deg);}

.n{top:1870px;left: 1000px;transform: rotate(203deg);}

.o{top:2150px;left: 690px;transform: rotate(206deg);}

.p{ top:2700px; left:320px; transform: rotate(180deg);}

 

 

 

import React from 'react';

import { gsap } from "gsap";

import { ScrollTrigger } from "gsap/ScrollTrigger";

import "./Gallery.css";

import Gallery1 from "./Gallery1.png";

import Golfo from "./Golfo.png";

import School from "./School.mp4";

import Gambarie from "./Gambarie.png";

import { ImageViewer } from "react-image-viewer-dv";

 

gsap.registerPlugin(ScrollTrigger);

 

const Gallery = () => {

 

ScrollTrigger.batch(".footprint", {

 

start: "top 20%",

end: "bottom bottom",

onEnter: elements => gsap.to(elements, {opacity: 1, stagger: 0.1}),

onLeaveBack: elements => gsap.set(elements, {opacity: 0}),

scrub: true,

invalidateOnRefresh: false,

 

});

 

 

 

ScrollTrigger.refresh();

[GSAP Helper]

The way you set up animations in React is different than you would in vanilla js, as the dom is virtual, and elements are dynamically added: This article should get you started:

 

Also:

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/Vue/Nuxt or some other framework, you may find StackBlitz easier to use. We have a series of collections with different templates for you to get started on these different frameworks: React/Next/Vue/Nuxt.

 

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

[James23]

Hey GSAP helper !!! thanks for the help  okay let me try to restruck this to suite React  and I will get back to you  if I have any issues from there. cheers