script.js

Shery.imageEffect("#back",{style:5,config:{"a":{"value":2,"range":[0,30]},"b":{"value":-0.98,"range":[-1,1]},"zindex":{"value":-9996999,"range":[-9999999,9999999]},"aspect":{"value":1.9362477231329691},"ignoreShapeAspect":{"value":true},"shapePosition":{"value":{"x":0,"y":0}},"shapeScale":{"value":{"x":0.5,"y":0.5}},"shapeEdgeSoftness":{"value":0,"range":[0,0.5]},"shapeRadius":{"value":0,"range":[0,2]},"currentScroll":{"value":0},"scrollLerp":{"value":0.07},"gooey":{"value":true},"infiniteGooey":{"value":true},"growSize":{"value":4,"range":[1,15]},"durationOut":{"value":1,"range":[0.1,5]},"durationIn":{"value":1,"range":[0.1,5]},"displaceAmount":{"value":0.5},"masker":{"value":false},"maskVal":{"value":1,"range":[1,5]},"scrollType":{"value":0},"geoVertex":{"range":[1,64],"value":1},"noEffectGooey":{"value":true},"onMouse":{"value":1},"noise_speed":{"value":0.38,"range":[0,10]},"metaball":{"value":0.23,"range":[0,2]},"discard_threshold":{"value":0.56,"range":[0,1]},"antialias_threshold":{"value":0.02,"range":[0,0.1]},"noise_height":{"value":0.24,"range":[0,2]},"noise_scale":{"value":32.06,"range":[0,100]}},gooey:true})

var elems = document.querySelectorAll(".elem")

elems.forEach(function(elem){
    var h1s = elem.querySelectorAll("h1");
    var index = 0;
    var animating = false;

    document.querySelector("#main").addEventListener("click",function(){
        if(!animating){
            animating = true;
            gsap.to(h1s[index],{
                top:'-=100%',
                ease : Expo.easeInOut,
                duration:1,
                onComplete : function(){
                    gsap.set(this._targets[0],{top:"100%"})
                    animating = false;
                }   
            })
    
            index === h1s.length-1?(index=0):index++;
        
            gsap.to(h1s[index],{
                top:'-=100%',
                ease : Expo.easeInOut,
                duration:1
            })
        }
    })
})