加载Loading动画 | 源码分享

源码分享 · 02-27 13:11

提起加载（loading）效果，想必大家都不会陌生，在目前的移动端、PC端、各类app均广泛使用，使用loading动画能显著提升用户的交互体检，尤其是在页面加载速度比较的慢的情况下，loading动画的作用就更加突出了。
IMG_4025.gif

效果1

IMG_4029.gif

<!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>
        body {
            margin: 0;
            padding: 0;
            background: #0099CC;
        }

        /* 设置位置 */
        .loading {
            position: absolute;
            /* 居中 */
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            /* 高度 */
            height: 40px;
            /* 弹性布局 */
            display: flex;
            /* 设置子项在y轴方向居中，应该是设置起点在中间，非常有用，不然动画很怪 */
            align-items: center;
        }

        /* 小竖条 */
        .item {
            height: 50px;
            width: 5px;
            background: white;
            /* 加margin，使竖条之间有空隙 */
            margin: 0px 3px;
            /* 圆角 */
            border-radius: 10px;
            /* 动画：名称、时间、循环 */
            animation: loading 1s infinite;
        }

        /* 设置动画 */
        @keyframes loading {
            0% {
                height: 0px;
            }

            50% {
                height: 50px;
            }

            100% {
                height: 0px;
            }
        }

        /* 为每一个竖条设置延时 */
        .item:nth-child(2) {
            animation-delay: 0.1s;
        }

        .item:nth-child(3) {
            animation-delay: 0.2s;
        }

        .item:nth-child(4) {
            animation-delay: 0.3s;
        }

        .item:nth-child(5) {
            animation-delay: 0.4s;
        }

        .item:nth-child(6) {
            animation-delay: 0.5s;
        }

        .item:nth-child(7) {
            animation-delay: 0.6s;
        }

        .item:nth-child(8) {
            animation-delay: 0.7s;
        }
    </style>
</head>

<body>
    <div class="loading">
        <div class="item"></div>
        <div class="item"></div>
        <div class="item"></div>
        <div class="item"></div>
        <div class="item"></div>
        <div class="item"></div>
        <div class="item"></div>
        <div class="item"></div>
    </div>
</body>

</html>

效果2

IMG_4026.gif

<!DOCTYPE html>
<html lang="en">
 
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .container {
            position: relative;
            width: 200px;
            height: 200px;
        }
 
        .container>div {
            position: absolute;
            left: 50%;
            top: 50%;
            margin-top: -10px;
            width: 50%;
            height: 20px;
            transform-origin: left center;
        }
 
        .container>div::after {
            content: "";
            position: absolute;
            right: 0;
            top: 0;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background-color: red;
            /* background-color: #000; */
            transform: var(--scale);
            animation: dotscale 1.2s linear infinite;
            animation-delay: var(--animation-delay);
        }
 
        .container>div:nth-child(1) {
            transform: rotate(0deg);
            --animation-delay: 0s;
        }
 
        .container>div:nth-child(2) {
            transform: rotate(30deg);
            --animation-delay: -0.1s;
        }
 
        .container>div:nth-child(3) {
            transform: rotate(60deg);
            --animation-delay: -0.2s;
        }
 
        .container>div:nth-child(4) {
            transform: rotate(90deg);
            --animation-delay: -0.3s;
        }
 
        .container>div:nth-child(5) {
            transform: rotate(120deg);
            --animation-delay: -0.4s;
        }
 
        .container>div:nth-child(6) {
            transform: rotate(150deg);
            --animation-delay: -0.5s;
        }
 
        .container>div:nth-child(7) {
            transform: rotate(180deg);
            --animation-delay: -0.6s;
        }
 
        .container>div:nth-child(8) {
            transform: rotate(210deg);
            --animation-delay: -0.7s;
        }
 
        .container>div:nth-child(9) {
            transform: rotate(240deg);
            --animation-delay: -0.8s;
        }
 
        .container>div:nth-child(10) {
            transform: rotate(270deg);
            --animation-delay: -0.9s;
        }
 
        .container>div:nth-child(11) {
            transform: rotate(300deg);
            --animation-delay: -1s;
        }
 
        .container>div:nth-child(12) {
            transform: rotate(330deg);
            --animation-delay: -1.1s;
        }
 
        @keyframes dotscale {
            0% {
                transform: scale(1);
                filter: hue-rotate(0deg);
            }
 
            100% {
                transform: scale(0);
                filter: hue-rotate(360deg);
            }
        }
    </style>
</head>
 
<body>
    <div class="container">
        <div></div>
        <div></div>
        <div></div>
        <div></div>
        <div></div>
        <div></div>
        <div></div>
        <div></div>
        <div></div>
        <div></div>
        <div></div>
        <div></div>
    </div>
</body>
 
</html>

效果3

IMG_4030.gif

<!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>
        .pan-loading {
            width: 180px;
            height: 180px;
            margin: 100px;
        }

        /* 食物 */
        .pan-loading .loading {
            position: relative;
            top: 10%;
            left: 0;
            z-index: -1;
            width: 60%;
            height: 45%;
            /* 设置透明边框 */
            /* 边框的设置，会去掉三条边框，最终显示一个梯形（上短下长） */
            border: 10px solid transparent;
            border-bottom: 10px solid #fdd835;
            /* 梯形会变成弧形，效果就是一块肉饼 */
            border-radius: 50%;
            /* 设置动画，名称、时间、循环 */
            animation: loading 2s infinite;
            /* 设置从开头到结尾以相同的速度来播放动画 */
            animation-timing-function: linear;
        }

        /* 食物转圈 */
        @keyframes loading {
            0% {
                width: 10%;
                transform: rotate(0deg);
            }

            20% {
                width: 10%;
                left: 20%;
            }

            30% {
                width: 25%;
            }

            50% {
                width: 35%;
                left: 15%;
            }

            70% {
                width: 30%;
                left: 18%;
                transform: rotate(240deg);
            }

            90% {
                width: 30%;
                left: 10%;

            }

            100% {
                width: 3%;
                left: 25%;
                transform: rotate(360deg);
            }
        }

        /* 锅 */
        .pan-loading .pan-container {
            display: flex;
            width: 100%;
            /* 设置动画 */
            animation: pan 2s infinite;
        }

        /* 颠锅 */
        @keyframes pan {
            0% {
                transform: rotate(0deg);
                /* 设置旋转的中心点 */
                transform-origin: top right;
            }

            10% {
                transform: rotate(-2deg);
                /* 设置旋转的中心点 */
                transform-origin: top right;
            }

            50% {
                transform: rotate(15deg);
            }

            100% {
                transform: rotate(0deg);
            }
        }

        /* 锅面 */
        .pan-loading .pan {
            width: 60%;
            height: 20px;
            /* 背景颜色，线性渐变 */
            background: linear-gradient(#3949ab, #5c6bc0);
            /* 设置锅左右两侧的弧度 */
            border-bottom-left-radius: 20px;
            border-bottom-right-radius: 20px;
        }

        /* 锅把 */
        .pan-loading .handle {
            width: 40%;
            height: 10px;
            /* 背景颜色，线性渐变 */
            background: linear-gradient(#3949ab, #5c6bc0);
            /* 设置锅把两侧的弧度 */
            border-top-left-radius: 10px;
            border-top-right-radius: 10px;
            border-bottom-left-radius: 20px;
            border-bottom-right-radius: 20px;
        }

        /* 炉子 */
        .pan-loading .shadow {
            position: relative;
            top: 15%;
            left: 15%;
            width: 30%;
            height: 8px;
            background: lightgreen;
            border-radius: 20px;
            /* 设置动画 */
            animation: shadow 2s infinite;
        }

        /* 炉子收缩、放大 */
        @keyframes shadow {
            0% {
                width: 30%;
            }

            50% {
                width: 40%;
                left: 20px;
            }

            100% {
                width: 30%;
            }
        }
    </style>
</head>

<body>
    <!-- 容器 -->
    <div class="pan-loading">
        <!-- 食物，加载圈 -->
        <div class="loading"></div>
        <!-- 平底锅 -->
        <div class="pan-container">
            <!-- 锅面 -->
            <div class="pan"></div>
            <!-- 锅把 -->
            <div class="handle"></div>
        </div>
        <!-- 炉子 -->
        <div class="shadow"></div>
    </div>
</body>

</html>

效果4

IMG_4031.gif

<!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>
        body {
            margin: 0;
            padding: 0;
            /* 居中 */
            position: absolute;
            top: 50%;
            left: 50%;
            background: #2D3C50;
            transform: translate(-50%, -50%);
        }

        /* 设置容器 */
        .container {
            width: 300px;
            height: 200px;
            background: #2D3C50;
            position: relative;
            display: flex;
            justify-content: space-evenly;
        }

        /* 小竖条 */
        .container .fence {
            height: 100%;
            width: 20px;
            background: #FFFF00;
            border-bottom-left-radius: 10%;
            border-bottom-right-radius: 10%;
        }

        .container .fence:nth-child(2) {
            background-color: #0099CC;
        }

        .container .fence:nth-child(4) {
            background-color: #FFCCCC;
        }

        .container .fence:nth-child(6) {
            background-color: #99C452;
        }

        .container .fence:nth-child(8) {
            background-color: #99CC33;
        }


        /* 弧形曲面，画一个大圆放到小竖条上面，形成一个曲面 */
        .container .circle {
            width: 400px;
            height: 400px;
            /* 父相子绝 */
            position: absolute;
            background: #2D3C50;
            border-radius: 50%;
            top: -150%;

            overflow: hidden;

            /* 核心：不是小球动，是大圆旋转 */
            transform: rotate(45deg);
            /* 动画，效果：开始结束慢，循环，循环交替播放动画 */
            animation: move 2s ease-in-out infinite alternate;
        }

        @keyframes move {
            0% {
                transform: rotate(45deg);
            }

            50% {
                transform: rotate(-45deg);
            }

            100% {
                transform: rotate(45deg);
            }
        }

        /* 小圆球 */
        .container .circle::after {
            /* 使用after在圆环里添加一个小球 */
            content: '';
            position: absolute;
            width: 30px;
            height: 30px;
            background: blue;
            bottom: 0px;
            left: 50%;
            transform: translate(-50%, 0);
            border-radius: 50%;
        }
    </style>
</head>

<body>
    <div class="container">
        <!-- 圆圈 -->
        <div class="circle"></div>
        <!-- 小竖条 -->
        <div class="fence"></div>
        <div class="fence"></div>
        <div class="fence"></div>
        <div class="fence"></div>
        <div class="fence"></div>
        <div class="fence"></div>
        <div class="fence"></div>
        <div class="fence"></div>
    </div>
</body>

</html>

效果5

IMG_4032.gif

<!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>
        .container {
            width: 400px;
            height: 300px;
            /* 居中 */
            position: absolute;
            display: flex;
            justify-content: center;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
        }

        .container .loading {
            position: relative;
            width: 100px;
            height: 100px;
            margin: 10px;
            background: #2D3C50;
        }

        /* 6个正方形 */
        .loading span {
            height: 100%;
            width: 100%;
            position: absolute;
            animation: move 3.5s linear infinite;
        }

        @keyframes move {
            74% {
                transform: rotate(600deg);
            }

            79% {
                transform: rotate(720deg);
                opacity: 1;
            }

            80% {
                transform: rotate(720deg);
                opacity: 0;
            }

            100% {
                transform: rotate(810deg);
                opacity: 0;
            }
        }

        .loading span:nth-child(2) {
            animation-delay: 0.1s;
        }

        .loading span:nth-child(3) {
            animation-delay: 0.2s;
        }

        .loading span:nth-child(4) {
            animation-delay: 0.3s;
        }

        .loading span:nth-child(5) {
            animation-delay: 0.4s;
        }

        .loading span:nth-child(6) {
            animation-delay: 0.5s;
        }

        .loading span::before {
            content: '';
            position: absolute;
            height: 10px;
            width: 10px;
            background-color: #fff;
            border-radius: 50%;
            bottom: 0px;
            left: calc(50% - 5px);
        }
    </style>
</head>

<body>
    <div class="container">
        <div class="loading">
            <span></span>
            <span></span>
            <span></span>
            <span></span>
            <span></span>
            <span></span>
        </div>
    </div>
</body>

</html>

效果6

IMG_4033.gif

<!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>
        body {
            margin: 0;
            padding: 0;
            background: #34495e;
            height: 100vh;
            /* 水平、垂直方向居中 */
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .loading {
            width: 150px;
            height: 150px;
            /* background: red; */
            /* 并排放置两个带边框的框，令浏览器呈现出带有指定宽度和高度的框，并把边框和内边距放入框中 */
            box-sizing: border-box;
            border-radius: 50%;
            border-top: 10px solid #FF9900;
            position: relative;
            /* 动画 */
            animation: a1 2s linear infinite;
        }

        /* before和after在元素前面和后面添加内容 */
        .loading::before,
        .loading::after {
            content: '';
            width: 150px;
            height: 150px;
            /* background: red; */
            position: absolute;
            left: 0;
            top: -10px;
            /* 形成另外两个颜色弧 */
            box-sizing: border-box;
            border-radius: 50%;
        }

        .loading::before {
            border-top: 10px solid #FF99CC;
            transform: rotate(120deg);
        }

        .loading::after {
            border-top: 10px solid #CCFF99;
            transform: rotate(240deg);
        }

        /* 文字 */
        .loading span{
            position: absolute;
            height: 150px;
            width: 150px;
            /* 文字居中 */
           text-align: center;
           line-height: 150px;
            color: lightgrey;
            font-size: 15px;
            /* 动画 */
            animation: a2 2s linear infinite;
        }

        @keyframes a1{
           to{
               transform: rotate(360deg);
           }
        }
        @keyframes a2{
           to{
               transform: rotate(-360deg);
           }
        }
    </style>
</head>

<body>
    <div class="loading">
        <span>Loading...</span>
    </div>
</body>

</html>

效果7

IMG_4034.gif

<!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>
        body {
            margin: 0;
            padding: 0;
            height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            background: #34495e;
        }

        svg {
            width: 0;
            height: 0;
        }

        .loading {
            position: relative;
            width: 200px;
            height: 200px;
            filter: url(#gooey);
        }

        .loading span {
            position: absolute;
            height: 100%;
            width: 100%;
            top: 0;
            left: 0;
            display: block;
            animation: loading 4s ease-in-out infinite;
        }

        .loading span:nth-child(1) {
            animation-delay: 0.2s;
        }

        .loading span:nth-child(2) {
            animation-delay: 0.4s;
        }

        .loading span:nth-child(3) {
            animation-delay: 0.6s;
        }

        .loading span:nth-child(4) {
            animation-delay: 0.8s;
        }

        .loading span:nth-child(5) {
            animation-delay: 1s;
        }

        .loading span:nth-child(6) {
            animation-delay: 1.2s;
        }

        .loading span:nth-child(7) {
            animation-delay: 1.24s;
        }

        .loading span::before {
            content: '';
            position: absolute;
            width: 40px;
            height: 40px;
            top: 0;
            left: calc(50% -20px);
            box-shadow: 0 0 30px #03a9f4;
            /* 设置渐变颜色 */
            background: linear-gradient(#fce4ec, #03a9f4);
            border-radius: 50%;
        }

        @keyframes loading {
            0% {
                transform: rotate(0deg);
            }

            50%,
            100% {
                transform: rotate(360deg);
            }
        }
    </style>
</head>

<body>
    <div class="loading">
        <!-- 小球 -->
        <span></span>
        <span></span>
        <span></span>
        <span></span>
        <span></span>
        <span></span>
        <span></span>
    </div>
    <svg>
        <filter id="gooey">
            <feGaussianBlur in="SourceGraphic" stdDeviation="10"></feGaussianBlur>
            <feColorMatrix values="
            1 0 0 0 0
            0 1 0 0 0
            0 0 1 0 0
            0 0 0 20 -10
            " />
        </filter>
    </svg>
</body>

</html>

效果8

IMG_4039.gif

<!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>圆弧转动</title>
</head>
<link rel="stylesheet" href="../common.css">
<style>
    :root {
        --color: orange;
        --lineColor: rgba(102, 163, 224, .2);
    }
    body {
        background: #222;
        overflow: hidden;
    }
    section {
        position: relative;
        width: 200px;
        height: 200px;
    }
    section::before {
        content: '';
        position: absolute;
        height: 10px;
        width: 10px;
        border-radius: 100%;
        border-top: 1px solid orange;
        top: 50%;
        left: 50%;
        margin-top: -5px;
        margin-left: -5px;
        animation: turn 1s infinite linear;
        filter:
            drop-shadow(0 0 2px var(--color)) drop-shadow(0 0 5px var(--color)) drop-shadow(0 0 10px var(--color)) drop-shadow(0 0 20px var(--color));
    }
    .box,
    .box::after,
    .box::before {
        border: 2px solid var(--lineColor);
        border-left: 2px solid var(--color);
        border-right: 2px solid var(--color);
        border-radius: 50%;
    }
    .box::after,
    .box::before {
        position: absolute;
        content: '';
        left: 50%;
        top: 50%;
    }
    .box {
        width: 200px;
        height: 200px;
        position: relative;
        animation: turn 1s linear infinite;
        transform-origin: 50% 50%;
    }
    .box::before {
        width: 180px;
        height: 180px;
        margin-top: -90px;
        margin-left: -90px;
        animation: turn2 1.25s linear infinite;
    }
    .box::after {
        width: 160px;
        height: 160px;
        margin-top: -80px;
        margin-left: -80px;
        animation: turn 1.5s linear infinite;
    }
    .box-circle,
    .box-circle1,
    .box-circle2 {
        border: 2px solid var(--color);
        opacity: .9;
        border-radius: 50%;
        position: absolute;
        left: 50%;
        top: 50%;
        transform-origin: 50% 50%;
        transform: translate(-50%, -50%);
        width: 100px;
        height: 100px;
        animation: rotate 3s linear infinite;
    }
    .box-circle {
        animation-delay: 0.2s;
    }
    .box-circle1 {
        animation-delay: 1.2s;
    }
    .box-circle2 {
        animation-delay: 2.2s;
    }
    @keyframes turn {
        100% {
            transform: rotateZ(-1turn);
        }
    }
    @keyframes turn2 {
        100% {
            transform: rotateZ(1turn);
        }
    }
    @keyframes rotate {
        100% {
            border: none;
            border-top: 2px solid var(--color);
            border-bottom: 2px solid var(--color);
            transform: translate(-50%, -50%) rotate3d(.5, 0.5, 0.5, -720deg);
        }
    }
</style>
<body>
    <section>
        <div class="box"></div>
        <div class="box-circle"></div>
        <div class="box-circle1"></div>
        <div class="box-circle2"></div>
    </section>
</body>

</html>

效果9

IMG_4034.gif

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8" />
    <title></title>
  </head>
  <link rel="stylesheet" href="../common.css" />
  <style>
    :root {
      --border: 5px;
      --gap: 15px;
      --w: 200px;
    }
    section {
      width: var(--w);
      height: var(--w);
      position: relative;
    }
    .loader-item {
      --width: calc(var(--w) - var(--gap) * 2 * var(--i));
      width: var(--width);
      height: calc(var(--width) / 2);
      border: var(--border) solid var(--c);
      border-radius: 50% 50% 0 0/100% 100% 0 0;
      border-bottom: none;
      position: absolute;
      left: calc(50% - var(--width) / 2);
      top: calc(var(--gap) * var(--i));
      transform-origin: 50% 100%;
      animation: rotate 2s cubic-bezier(0.11, 0.85, 0.22, 1.3) infinite;
      animation-delay: calc(-60ms * var(--i));
      transition: all 0.5s;
    }
    section:hover .loader-item {
      filter: brightness(1.5);
      animation-play-state: paused;
    }
    @keyframes rotate {
      0%,
      25% {
        transform: rotate(0deg);
      }
      100% {
        transform: rotate(360deg);
      }
    }
  </style>
  <body>
    <section>
      <div class="loader-item" style="--c: #e94545; --i: 0"></div>
      <div class="loader-item" style="--c: #eb8f34; --i: 1"></div>
      <div class="loader-item" style="--c: #eecf69; --i: 2"></div>
      <div class="loader-item" style="--c: #215221; --i: 3"></div>
      <div class="loader-item" style="--c: #87bb80; --i: 4"></div>
      <div class="loader-item" style="--c: #87ceeb; --i: 5"></div>
      <div class="loader-item" style="--c: #c393eb; --i: 6"></div>
    </section>
  </body>
</html>
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  1. HowieHz   Lv1
    回复
    06-18 12:45 第1个脚印 中国上海市移动Windows 10 · Google Chrome

    mark 一下，慢慢研究

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