分享一段代码实例，它实现了摩天轮旋转效果。
效果是通过css3和jQuery实现，代码实例如下:
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<!doctype html><html>
<head>
<meta charset="utf-8">
<title>摩天轮旋转效果</title>
<style>
* { margin: 0;
padding: 0;
box-sizing: border-box;
}ul { list-style: none;
}html, body, #skywheel { width: 100%;
height: 100%;
overflow: hidden;
}#skywheel { padding: 3px;
background-color: orange;
background-image: linear-gradient(top,skyblue 90%, orange 90%);
background-image: -o-linear-gradient(top,skyblue 90%, orange 90%);
background-image: -moz-linear-gradient(top,skyblue 90%, orange 90%);
background-image: -webkit-linear-gradient(top,skyblue 90%, orange 90%);
}#skywheel:before, #skywheel:after { z-index: 1;
background-color: lightcoral;
transform-origin: 0 15%;
content: "";
display: block;
position: absolute;
width: 25px;
height: calc(100% - 55%);
bottom: 10%;
}#skywheel:before { left: calc(50% - 25px);
transform: skew(-15deg);
}#skywheel:after { left: 50%;
transform: skew(15deg);
}#skywheel ul { position: relative;
border-radius: 50%;
margin: auto;
width: 75%;
height: 75%;
bottom: -10%;
animation: wheel 10s linear 1s infinite;
-webkit-animation: wheel 10s linear 1s infinite;
}#skywheel ul:after { z-index: 2;
background-color: lightcoral;
box-shadow: 0 0 3px black;
display: block;
position: absolute;
content: "";
width: 50px;
height: 50px;
border-radius: 50%;
top: calc(50% - 25px);
left: calc(50% - 25px);
}#skywheel ul li { overflow: hidden;
margin: -5px 0 0 calc(-50% / 10);
width: calc(100% / 10);
height: calc(100% / 12);
border: solid 3px red;
border-radius: 50%;
position: absolute;
top: 0;
left: 0;
transform-origin: center 5px;
animation: car 10s linear 1s infinite;
-webkit-animation: car 10s linear 1s infinite;
background-image: linear-gradient(top, red 15%, transparent 15%, transparent 55%, red 55%);
background-image: -o-linear-gradient(top, red 15%, transparent 15%, transparent 55%, red 55%);
background-image: -moz-linear-gradient(top, red 15%, transparent 15%, transparent 55%, red 55%);
background-image: -webkit-linear-gradient(top, red 15%, transparent 15%, transparent 55%, red 55%);
}#skywheel ul li:nth-of-type(3n) { border-color: green;
background-image: linear-gradient(top, green 15%, transparent 15%, transparent 55%, green 55%);
background-image: -o-linear-gradient(top, green 15%, transparent 15%, transparent 55%, green 55%);
background-image: -moz-linear-gradient(top, green 15%, transparent 15%, transparent 55%, green 55%);
background-image: -webkit-linear-gradient(top, green 15%, transparent 15%, transparent 55%, green 55%);
}#skywheel ul li:nth-of-type(3n-1) { border-color: yellow;
background-image: linear-gradient(top, yellow 15%, transparent 15%, transparent 55%, yellow 55%);
background-image: -o-linear-gradient(top, yellow 15%, transparent 15%, transparent 55%, yellow 55%);
background-image: -moz-linear-gradient(top, yellow 15%, transparent 15%, transparent 55%, yellow 55%);
background-image: -webkit-linear-gradient(top, yellow 15%, transparent 15%, transparent 55%, yellow 55%);
}#skywheel ul li:after { content: "";
display: block;
width: 1px;
height: 80%;
margin: calc(15% - 4px) auto 0;
border: solid 2px red;
background-color: snow;
}#skywheel ul li:nth-of-type(3n):after { border-color: green;
}#skywheel ul li:nth-of-type(3n-1):after { border-color: yellow;
}@keyframes wheel { 0% {
transform: rotate(0deg);
}
100% {
transform: rotate(360deg);
}
}@-webkit-keyframes wheel { 0% {
transform: rotate(0deg);
}
100% {
transform: rotate(360deg);
}
}@keyframes car { 0% {
transform: rotate(0deg);
}
100% {
transform: rotate(-360deg);
}
}@-webkit-keyframes car { 0% {
transform: rotate(0deg);
}
100% {
transform: rotate(-360deg);
}
}</style>
<script type="text/javascript">
$(function() { var radius = function(init) {
var num = 24;
var deg = 360 / num;
var o = $("#skywheel ul").removeAttr("style");
var w = o.width();
var h = o.height();
var d = w < h ? w : h;
o.width(d);
o.height(d);
var hack = ["", "-o-", "-ms-", "-moz-", "-webkit-"];
$.each(hack, function(i, n) {
var bgStr = "";
var str = "";
$.each(new Array(num / 2), function(j) {
if (str) str += ",";
str += n + "linear-gradient(" + (j * deg) + "deg, transparent 49.65%, snow 49.9%, snow 50.1%, transparent 50.35%)";
});
bgStr = n + "radial-gradient(center,transparent 30%, snow 30%, snow 31.5%, transparent 31.5%, transparent 57.5%, snow 57.5%, snow 59%, transparent 59%)";
o.css({
"background-image": str + "," + bgStr
});
});
$.each(new Array(num), function(i) {
var r = d / 2;
var x = r;
var y = r;
var a = deg * i;
var x1 = x + r * Math.sin(a * Math.PI / 180);
var y2 = y - r * Math.cos(a * Math.PI / 180);
console.log(init)
obj = init ? o.find("li").eq(i) : $("<li>").appendTo(o);
obj.css({
top: y2,
left: x1
})
})
}
$(window).resize(radius);
radius();
})</script>
</head>
<body>
<div id="skywheel">
<ul></ul>
</div>
</body>
</html>
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