效果图：
代码：
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>图片预加载</title>
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</head>
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<style>
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.content {
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width: 600px;
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margin: auto;
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}
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img {
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max-width: 100%;
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}
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.loading {
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width: 150px;
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height: 40px;
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margin: 50px auto;
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}
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.loading span {
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display: inline-block;
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width: 8px;
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height: 100%;
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border-radius: 4px;
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background: lightgreen;
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margin-left: 5px;
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-webkit-animation: load 2s ease infinite;
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}
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@-webkit-keyframes load {
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0%,
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100% {
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height: 40px;
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background: lightgreen;
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}
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50% {
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height: 70px;
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margin: -15px 0;
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margin-left: 5px;
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background: lightblue;
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}
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}
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.loading span:nth-child(2) {
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-webkit-animation-delay: 0.2s;
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}
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.loading span:nth-child(3) {
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-webkit-animation-delay: 0.4s;
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}
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.loading span:nth-child(4) {
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-webkit-animation-delay: 0.6s;
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}
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.loading span:nth-child(5) {
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-webkit-animation-delay: 0.8s;
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}
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.loading span:nth-child(6) {
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-webkit-animation-delay: 1s;
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}
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</style>
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<body>
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<div class="content">
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<div class="content_choose zero">
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<img class="p0" src="">
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<div class="loading">
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<span></span>
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<span></span>
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<span></span>
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<span></span>
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<span></span>
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<span></span>
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</div>
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</div>
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<div class="content_choose one"> <img class="p1" src="">
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<div class="loading">
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<span></span>
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<span></span>
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<span></span>
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<span></span>
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<span></span>
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<span></span>
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</div>
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</div>
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<div class="content_choose two"> <img class="p2" src="">
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<div class="loading">
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<span></span>
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<span></span>
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<span></span>
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<span></span>
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<span></span>
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<span></span>
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</div>
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</div>
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<div class="content_choose three"><img class="p3" src="">
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<div class="loading">
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<span></span>
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<span></span>
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<span></span>
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<span></span>
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<span></span>
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<span></span>
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</div>
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</div>
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<div class="content_choose one"> <img class="p4" src="">
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<div class="loading">
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<span></span>
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<span></span>
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<span></span>
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<span></span>
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<span></span>
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<span></span>
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</div>
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</div>
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<div class="content_choose two"> <img class="p5" src="">
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<div class="loading">
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<span></span>
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<span></span>
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<span></span>
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<span></span>
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<span></span>
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<span></span>
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</div>
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</div>
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<div class="content_choose three"><img class="p6" src="">
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<div class="loading">
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<span></span>
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<span></span>
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<span></span>
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<span></span>
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<span></span>
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<span></span>
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</div>
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</div>
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</div>
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</body>
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<script src="jquery-1.11.3.min.1.js"></script>
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<script>
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/*添加要加载的图片*/
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var gifList = ["list/service-service01.png", "list/service-service02.png", "list/service-service03.png",
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"list/service-service04.png", "list/service-service05.png", "list/service-service06.png", "list/service-service07.png"
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];
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for (var i = 0; i < gifList.length; i++) {
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(function(index) {
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loadImage(gifList[index], function() {
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var image = $(".p" + index);
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image.next().remove();
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image.attr("src", gifList[index]).hide().fadeIn(500);
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})
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})(i)
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}
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function loadImage(url, callback) {
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var image = new Image;
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image.onload = function() {
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image.onload = null,
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callback(image)
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},
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image.src = url;
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}
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</script>
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</html>
文章来源: albertyang.blog.csdn.net，作者：Albert Yang，版权归原作者所有，如需转载，请联系作者。
原文链接：albertyang.blog.csdn.net/article/details/103456064