Enter And Exit

gsap.registerPlugin(Flip);
gsap.config({ trialWarn: false });

let container = document.querySelector(".container");
let addButton = document.querySelector("#add-button");
let shuffleButton = document.querySelector("#shuffle-button");
let state;

// remove items
container.addEventListener("click", (e) => {
 console.log(e.target);
 if (e.target.classList.contains("item")) {
 setState(() => e.target.classList.add("exiting"));
 }
});

function createItem() {
 let item = document.createElement("li");
 item.classList.add("item");
 item.textContent = "Item";
 return item;
}

addButton.addEventListener("click", () => {
 setState(() => container.prepend(createItem()));
});

shuffleButton.addEventListener("click", () => {
 setState(() => {
 gsap.utils
 .shuffle(gsap.utils.toArray(".item"))
 .forEach((item) => container.append(item));
 });
});

function setState(action) {
 state = Flip.getState(".item, .button");
 action();
 animate();
}

function animate() {
 // get the items that are exiting in this batch
 let exiting = gsap.utils.toArray(".exiting");

 // Flip.from returns a timeline
 let timeline = Flip.from(state, {
 absolute: true,
 ease: "power1.inOut",
 targets: ".item, .button",
 scale: true,
 simple: true,
 onEnter(elements) {
 return gsap.fromTo(
 elements,
 {
 opacity: 0,
 scale: 0,
 xPercent: -100
 },
 {
 opacity: 1,
 xPercent: 0,
 scale: 1,
 delay: 0.2,
 duration: 0.3
 }
 );
 },
 onLeave(elements) {
 return gsap.to(elements, {
 opacity: 0,
 scale: 0.6,
 rotation: 10,
 yPercent: -5,
 xPercent: 50,
 ease: "expo.out"
 });
 }
 });

 // remove exited elements from the DOM
 timeline.add(() => removeExited(exiting));
}

function removeExited(exited) {
 gsap.utils.toArray(".item").forEach((item) => {
 if (exited.includes(item)) {
 item.remove();
 }
 });
}

/* StyleGallery host styles: independent replacement for unavailable shared Pen CSS. */
:root{--color-just-black:#111522;--color-surface-white:#f7f3ec;--color-surface75:#cfccc6;--color-surface50:#898e9f;--color-surface25:#414859;--color-shockingly-green:#95efd2;--color-lt-green:#b5f4da;--color-pink:#fbadce;--color-purple:#897dff;--color-lilac:#b5a1ff;--color-orangey:#ffd28c;--color-blue:#75d8ed;--color-ui-gradient:linear-gradient(135deg,#fbadce,#897dff);--light:#f7f3ec;--dark:#111522;--mid:#898e9f}
*{box-sizing:border-box}body{background:#111522;color:#f7f3ec;font-family:system-ui,sans-serif;margin:0;min-height:100vh;width:100%}button,input{font:inherit}button,.button{background:#111522;border:1px solid #898e9f;border-radius:.55rem;color:#f7f3ec;cursor:pointer;padding:.65rem 1rem}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #95efd2;outline-offset:4px}h1,h2,h3,h4{line-height:1.15}h4{font-weight:500}code{font-family:ui-monospace,monospace}.heading-l{font-size:clamp(2rem,6vw,5rem)}.heading-text{font-size:clamp(1.5rem,4vw,3rem)}.box{background:#95efd2;border-radius:14px;height:clamp(38px,12vw,80px);width:clamp(38px,12vw,80px)}.green{background:#95efd2}.purple{background:#897dff}.orange{background:#ffd28c}.gradient-pink{background:linear-gradient(140deg,#fbadce,#fc7f8e)}.gradient-purple{background:linear-gradient(140deg,#b5a1ff,#537ff7)}.center{align-items:center;display:flex;justify-content:center}.text-center{text-align:center}.panel{min-height:100vh;width:100%}.flair:not(img){background-image:url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDgiIGhlaWdodD0iMjQ4IiB2aWV3Qm94PSIwIDAgMjQ4IDI0OCI+PGRlZnM+PGxpbmVhckdyYWRpZW50IGlkPSJnIiB4Mj0iMSIgeTI9IjEiPjxzdG9wIHN0b3AtY29sb3I9IiNiNWExZmYiLz48c3RvcCBvZmZzZXQ9IjEiIHN0b3AtY29sb3I9IiM3NWQ4ZWQiLz48L2xpbmVhckdyYWRpZW50PjwvZGVmcz48ZyBmaWxsPSJ1cmwoI2cpIj48cGF0aCBkPSJNODcgMjBoNzR2NjdoNjd2NzRoLTY3djY3SDg3di02N0gyMFY4N2g2N1oiLz48L2c+PC9zdmc+");background-position:center;background-repeat:no-repeat;background-size:contain;height:80px;width:80px}.flair--3:not(img){background-image:url("data:image/svg+xml;base64,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")}.braces{font-size:1rem}img{max-width:100%}
/* External font programs are omitted; preserve readable fallback typography. */
body,button,input,h1,h2,h3,h4,p,span,div{font-family:inherit}body{font-family:system-ui,sans-serif}code,pre{font-family:ui-monospace,monospace}

window.__STYLEGALLERY_ASSETS__={};
gsap.registerPlugin(Flip);
gsap.config({ trialWarn: false });
let container = document.querySelector(".container");
let addButton = document.querySelector("#add-button");
let shuffleButton = document.querySelector("#shuffle-button");
let state;
container.addEventListener("click", (e) => {
  console.log(e.target);
  if (e.target.classList.contains("item")) {
    setState(() => e.target.classList.add("exiting"));
  }
});
function createItem() {
  let item = document.createElement("li");
  item.classList.add("item");
  item.textContent = "Item";
  return item;
}
addButton.addEventListener("click", () => {
  setState(() => container.prepend(createItem()));
});
shuffleButton.addEventListener("click", () => {
  setState(() => {
    gsap.utils.shuffle(gsap.utils.toArray(".item")).forEach((item) => container.append(item));
  });
});
function setState(action) {
  state = Flip.getState(".item, .button");
  action();
  animate();
}
function animate() {
  let exiting = gsap.utils.toArray(".exiting");
  let timeline = Flip.from(state, {
    absolute: true,
    ease: "power1.inOut",
    targets: ".item, .button",
    scale: true,
    simple: true,
    onEnter(elements) {
      return gsap.fromTo(
        elements,
        {
          opacity: 0,
          scale: 0,
          xPercent: -100
        },
        {
          opacity: 1,
          xPercent: 0,
          scale: 1,
          delay: 0.2,
          duration: 0.3
        }
      );
    },
    onLeave(elements) {
      return gsap.to(elements, {
        opacity: 0,
        scale: 0.6,
        rotation: 10,
        yPercent: -5,
        xPercent: 50,
        ease: "expo.out"
      });
    }
  });
  timeline.add(() => removeExited(exiting));
}
function removeExited(exited) {
  gsap.utils.toArray(".item").forEach((item) => {
    if (exited.includes(item)) {
      item.remove();
    }
  });
}

<!--

Copyright (c) 2024 - GreenSock - https://codepen.io/GreenSock/pen/qBGRxMy

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GSAP 3.15.0
Copyright 2026, GreenSock. All rights reserved.
Subject to the Standard No Charge License: https://gsap.com/standard-license.
The full notice in each original GSAP library file is preserved.


StyleGallery host adapter and replacement SVG subjects: locally authored.