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【GSAP】GSAP Practice【#１３ GSAP ScrollTrigger１】

2025/01/05に公開

CSS 3

【#１３ GSAP ScrollTrigger１】

YouTube: https://youtu.be/XkvGJGJDlCU
https://youtu.be/XkvGJGJDlCU

今回からScrollTriggerについて解説していきます。
まずは、準備と初期設定から始めます。

index.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Gsap practice</title>
    <link
      href="https://cdn.jsdelivr.net/npm/remixicon@4.5.0/fonts/remixicon.css"
      rel="stylesheet"
    />
    <link rel="stylesheet" href="css/main.css" />
  </head>
  <body>
    <div class="section-1">
      <div id="loading">Loading</div>
    </div>

    <div class="section-2">
      <div class="box box-1"></div>
      <div class="box box-2"></div>
      <div class="box box-3"></div>
    </div>

    <div class="section-3">
      <nav class="sec3-nav">
        <div class="sec3-logo">GSAP Lesson</div>
        <i id="menu-open" class="ri-menu-line"></i>
        <div class="menu-bg"></div>
        <div class="menu-wrapper">
          <div class="menu-header">
            <h3>Menu</h3>
            <i id="menu-close" class="ri-close-line"></i>
          </div>
          <div class="menu-line"></div>
          <ul class="menu-list-wrapper">
            <li class="menu-list">TOP</li>
            <li class="menu-list">CONTENT</li>
            <li class="menu-list">ABOUT</li>
            <li class="menu-list">CONTACT</li>
            <li class="menu-list">ACCESS</li>
          </ul>
        </div>
      </nav>
    </div>

    <script src="https://unpkg.com/lenis@1.1.16/dist/lenis.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/gsap@3.12.5/dist/gsap.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/gsap@3.12.5/dist/ScrollTrigger.min.js"></script>
    <script src="js/main.js"></script>
  </body>
</html>

css/main.css

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html,
body {
  width: 100%;
  height: 100%;
}
.section-1,
.section-2,
.section-3 {
  width: 100%;
  height: 100vh;
}
.section-1 {
  background-color: salmon;
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: center;
  justify-content: center;
}

#loading {
  color: white;
  font-size: 60px;
  display: flex;
}

#loading span {
  display: block;
}

.section-2 {
  background-color: skyblue;
  display: flex;
  flex-direction: column;
  gap: 20px;
  justify-content: space-between;
}
#stroke-wrapper {
  width: 1000px;
  margin: 0 auto;
  background-color: gray;
}

.section-3 {
  background-color: violet;
  display: flex;
  flex-direction: column;
  position: relative;
}
.sec3-nav {
  width: 100%;
  max-width: 1560px;
  margin: 0 auto;
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.sec3-logo {
  font-weight: bold;
  font-size: 24px;
}
.ri-menu-line,
.ri-close-line {
  font-size: 24px;
  cursor: pointer;
  font-weight: 500;
}
.menu-wrapper {
  height: 100%;
  width: 320px;
  position: absolute;
  top: 0;
  right: -320px;
  background-color: rgba(255, 255, 255, 0.8);
  padding: 20px;
}
.menu-header {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 30px;
}
.menu-line {
  width: 100%;
  height: 1px;
  margin: 14px 0;
  background-color: rgba(255, 255, 255, 1);
}
.menu-list-wrapper {
  list-style-type: none;
  display: flex;
  flex-direction: column;
  gap: 20px;
  font-size: 22px;
}
.menu-bg {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  right: -100%;
  background-color: rgba(255, 77, 0, 0.6);
}
.box {
  width: 160px;
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}
.box-1 {
  background-color: red;
}
.box-2 {
  background-color: blue;
}
.box-3 {
  background-color: green;
}
.box-4 {
  background-color: purple;
}

js/main.js

// use a script tag or an external JS file
document.addEventListener("DOMContentLoaded", (event) => {
  gsap.registerPlugin(ScrollTrigger);
  new App();
});

class App {
  constructor() {
    this._initialize();
    this._renderLenis();
  }

  _initialize() {
    this._createLenis();
    this._sec1Anime();
    this._sec2Anime();
    this._sec3Anime();
  }

  _createLenis() {
    this.lenis = new Lenis();
  }

  _renderLenis(time) {
    this.lenis.raf(time);
    requestAnimationFrame(this._renderLenis.bind(this));
  }

  _sec1Anime() {
    const loadingEl = document.querySelector("#loading");
    const loadingTexts = loadingEl.textContent.split("");
    let innerText = "";

    loadingTexts.forEach((text) => {
      innerText += `<span>${text}</span>`;
    });

    // console.log(loadingTexts);
    // console.log(innerText);

    loadingEl.innerHTML = innerText;

    const tl = gsap.timeline({ repeat: -1 });

    tl.to("#loading span", {
      duration: 1,
      y: -50,
      stagger: {
        each: 0.2,
        from: "left",
      },
    }).to("#loading span", {
      duration: 1,
      y: 0,
      stagger: {
        each: 0.2,
        from: "left",
      },
      ease: "bounce.out",
    });
  }

  _sec2Anime() {
    gsap.to(".box-1", {
      x: 500,
      scrollTrigger: {
        trigger: ".box-1",
      },
    });
    gsap.to(".box-2", {
      x: 500,
      scrollTrigger: {
        trigger: ".box-2",
      },
    });
    gsap.to(".box-3", {
      x: 500,
      scrollTrigger: {
        trigger: ".box-3",
      },
    });
  }
  _sec3Anime() {
    const menuOpen = document.querySelector("#menu-open");
    const menuClose = document.querySelector("#menu-close");
    const menuBg = document.querySelector(".menu-bg");

    const tl = gsap.timeline();

    tl.to(".menu-wrapper", {
      right: 0,
      duration: 0.7,
      ease: "power3.out",
    });

    tl.to(
      ".menu-bg",
      {
        right: 0,
        duration: 0.7,
        ease: "power3.out",
      },
      0.5
    );

    tl.from(
      ".menu-list",
      {
        x: 150,
        opacity: 0,
        dutarion: 0.2,
        stagger: {
          each: 0.2,
        },
      },
      0.5
    );

    tl.pause();

    menuOpen.addEventListener("click", () => {
      tl.play();
    });
    menuClose.addEventListener("click", () => {
      tl.reverse();
    });
    menuBg.addEventListener("click", () => {
      tl.reverse();
    });
  }
}

【#１３ GSAP ScrollTrigger１】

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