旋转霓虹灯

时间 2021-05-20
标签 html 前端 flex spa code orm htm animation 栏目 HTML 繁體版
原文原文链接
代码来自头条号"前端小智", 侵权删
html
<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body{
      width: 100%;
      height: 100vh;
      background-color: #000;
      display: flex;
      justify-content: center;
      align-items: center;
    }
    .loader{
      position: relative;
    }
    span{
      position: absolute;
      width: 40px;
      height: 40px;
      display: block;
      animation: animate 4s linear calc(-0.5s*var(--i)) infinite; /* 这个计算我一直没搞懂 搞懂了在补充吧*/
      background-color: #0f0;
      box-shadow: 0 0 10px #0f0, 0 0 40px #0f0, 0 0 80px #0f0, 0 0 120px #0f0, 0 0 160px #0f0;
      transform-origin: bottom;
    }
    @keyframes animate {
      0%{
        top: 0;
        left: 150px;
        transform: scaleY(1);
        filter: hue-rotate(0deg);/*给图像应用色相旋转 "angle"一值设定图像会被调整的色环角度值  也不知道色环是哪一个*/
      }
      2%{
        top: 0;
        left: 150px;
        transform: scaleY(0.5); /*这块是作出了弹性效果*/
      }
      10%{
        top: 0;
        left: 80px;
        transform: scaleY(1);
      }
      40%{
        top: 0;
        left: -150px;
      }
      60%{
        top: -200px;
        left: -150px;
      }
      85%{
        top: -200px;
        left: 150px;
      }
      100%{
        top: 0;
        filter: hue-rotate(360deg);
        left: 150px;
      }

    }
  </style>
</head>

<body>
  <div class="loader">
    <span style="--i:0"></span> <!-- --i:0 这是什么写法-->
    <span style="--i:1"></span>
    <span style="--i:2"></span>
    <span style="--i:3"></span>
    <span style="--i:4"></span>
    <span style="--i:5"></span>
    <span style="--i:6"></span>
    <span style="--i:7"></span>
  </div>
</body>

</html>