Scroll Animation

缪兴腾

2023-12-01

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <link rel="stylesheet" href="style.css" />
    <title>Scroll Animation</title>
  </head>
  <body>
    <h1>Scroll to see the animation</h1>
    <div class="box"><h2>Content</h2></div>
    <div class="box"><h2>Content</h2></div>
    <div class="box"><h2>Content</h2></div>
    <div class="box"><h2>Content</h2></div>
    <div class="box"><h2>Content</h2></div>
    <div class="box"><h2>Content</h2></div>
    <div class="box"><h2>Content</h2></div>
    <div class="box"><h2>Content</h2></div>
    <div class="box"><h2>Content</h2></div>
    <div class="box"><h2>Content</h2></div>
    <div class="box"><h2>Content</h2></div>
    <div class="box"><h2>Content</h2></div>
    <div class="box"><h2>Content</h2></div>
    <script src="script.js"></script>
  </body>
</html>

@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;700&display=swap');

* {
  box-sizing: border-box;
}

body {
  background-color: #efedd6;
  font-family: 'Roboto', sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 0;
  /* overflow-x: hidden; */
}

h1 {
  margin: 10px;
}

.box {
  background-color: steelblue;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 400px;
  height: 200px;
  margin: 10px;
  border-radius: 10px;
  box-shadow: 2px 4px 5px rgba(0, 0, 0, 0.3);
  transform: translateX(400%);
  transition: transform 0.4s ease;
}

.box:nth-of-type(even) {
  transform: translateX(-400%);
}
 
.box.show {
  transform: translateX(0);
}

.box h2 {
  font-size: 45px;
}

const boxes = document.querySelectorAll('.box')

window.addEventListener('scroll', checkBoxes)

checkBoxes()

function checkBoxes() {
    // innerHeight：浏览器窗口的视口（viewport）高度
    const triggerBottom = window.innerHeight / 5 * 4

    boxes.forEach(box => {
      // Element.getBoundingClientRect() 方法返回一个 DOMRect 对象，其提供了元素的大小及其相对于视口的位置
      const boxTop = box.getBoundingClientRect().top

      if(boxTop < triggerBottom) {
          box.classList.add('show')
      } else {
          box.classList.remove('show')
      }
    })
}

Scroll Animation

相关阅读

相关文章

相关问答