css实现loading效果

最近在写前端页面的时候需要用到loading的动画效果,所以在此记录下来。本人偏爱效果一。

一. 效果一

(一). 效果图如下

css实现loading效果

(二). html源码

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="css/test1.css">
</head>
<body>
    <div class="loading">
        <h2>正在加载中......</h2>
        <span></span>
        <span></span>
        <span></span>
        <span></span>
        <span></span>
        <span></span>
        <span></span>
    </div>
</body>
</html>

(三). 样式

test1.css样式内容如下:

body {
    background: #222;
    text-align: center;
    padding: 20%;
}
h2 {
    color: #ccc;
    margin: 0;
    font: .8em verdana;
    text-transform: uppercase;
    letter-spacing: .1em;
}

.loading span {
    display: inline-block;
    vertical-align: middle;
    width: .6em;
    height: .6em;
    margin: .19em;
    background: #007DB6;
    border-radius: .6em;
    animation: loading 1s infinite alternate;
}
.loading span:nth-of-type(2) {
    background: #008FB2;
    animation-delay: 0.2s;
}
.loading span:nth-of-type(3) {
    background: #009B9E;
    animation-delay: 0.4s;
}
.loading span:nth-of-type(4) {
    background: #00A77D;
    animation-delay: 0.6s;
}
.loading span:nth-of-type(5) {
    background: #00B247;
    animation-delay: 0.8s;
}
.loading span:nth-of-type(6) {
    background: #5AB027;
    animation-delay: 1.0s;
}
.loading span:nth-of-type(7) {
    background: #A0B61E;
    animation-delay: 1.2s;
}

@keyframes loading {
    0% {
        opacity: 0;
    }
    100% {
        opacity: 1;
    }
}

二. 效果2

(一). 效果图

css实现loading效果

(二). html源码

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="css/test2.css">
</head>
<body>
    <figure>
        <div class="dot white"></div>
        <div class="dot"></div>
        <div class="dot"></div>
        <div class="dot"></div>
        <div class="dot"></div>
    </figure>
</body>
</html>

(三). 样式

test2.css样式内容如下:

body { background: #222; }
figure {
    position: absolute;
    margin: auto;
    top: 0; bottom: 0; left: 0; right: 0;
    width: 6.250em; height: 6.250em;
    animation: rotate 2.4s linear infinite;
}
.white {
    top: 0; bottom: 0; left: 0; right: 0;
    background: white;
    animation: flash 2.4s linear infinite;
    opacity: 0;
}
.dot {
    position: absolute;
    margin: auto;
    width: 2.4em; height: 2.4em;
    border-radius: 100%;
    transition: all 1s ease;
}
.dot:nth-child(2) { top: 0; bottom: 0; left: 0; background: #FF4444; animation: dotsY 2.4s linear infinite; }
.dot:nth-child(3) { left: 0; right: 0; top: 0; background: #FFBB33; animation: dotsX 2.4s linear infinite; }
.dot:nth-child(4) { top: 0; bottom: 0; right: 0; background: #99CC00; animation: dotsY 2.4s linear infinite; }
.dot:nth-child(5) { left: 0; right: 0; bottom: 0; background: #33B5E5; animation: dotsX 2.4s linear infinite; }

@keyframes rotate {
    0% { transform: rotate( 0 ); }
    10% { width: 6.250em; height: 6.250em; }
    66% { width: 2.4em; height: 2.4em; }
    100%{ transform: rotate(360deg); width: 6.250em; height: 6.250em; }
}

@keyframes dotsY {
    66% { opacity: .1; width: 2.4em; }
    77%{ opacity: 1; width: 0; }
}
@keyframes dotsX {
    66% { opacity: .1; height: 2.4em;}
    77%{ opacity: 1; height: 0; }
}

@keyframes flash {
    33% { opacity: 0; border-radius: 0%; }
    55%{ opacity: .6; border-radius: 100%; }
    66%{ opacity: 0; }
}

css实现loading效果

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