setInterval(function(){
$("#donghua").css({"position":"relative","left":-n+"px","background-position":n+"px 0px"})
n=(n>-777)?n-111:-111
},300)
</script>
引入jquery
然后给你要设置动画的对象增加或者删除css3动画的类就可以了。
如我这里用colorchange这个渐变类在css里面写好动画效果以后在js里面给对象添加上就可以实现动画了
<!DOCTYPE html><html>
<head lang="en">
<meta charset="UTF-8">
<title>Test</title>
<style type="text/css">
body{
padding: 20px
background-color:#FFF
}
.colorchange
{
animation:myfirst 5s
-moz-animation:myfirst 5s /* Firefox */
-webkit-animation:myfirst 5s /* Safari and Chrome */
-o-animation:myfirst 5s /* Opera */
}
@keyframes myfirst
{
from {background:red}
to {background:yellow}
}
@-moz-keyframes myfirst /* Firefox */
{
from {background:red}
to {background:yellow}
}
@-webkit-keyframes myfirst /* Safari and Chrome */
{
from {background:red}
to {background:yellow}
}
@-o-keyframes myfirst /* Opera */
{
from {background:red}
to {background:yellow}
}
#main{
width:100px
height:100px
background:red
}
#cgbt{
width: 100px
margin: 20px 0 0 0
text-align: center
cursor: pointer
}
#cgbt:hover{
background-color: #2D93CA
}
</style>
</head>
<body>
<div id="main">
我会变么？
</div>
<div id="cgbt">
点我让上面的变颜色
</div>
<script src="jquery-3.2.1.min.js" type="application/javascript"></script>
<script>
$(document).ready(function(){
$("#cgbt").click(function(){
$("#main").attr("class","colorchange")
})
})
</script>
</body>
</html>
