桃花长相依
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374<!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>