代码编辑器：
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<meta charset="utf-8">3
<link href="/static/next/css/tryit.css?v=2017082407" rel="stylesheet"/>4
<script src="https://cdn.staticfile.org/jquery/2.2.4/jquery.min.js"></script> 5
<script> 6
$(document).ready(function(){7
$("#start").click(function(){8
$("div").animate({height:300},1500);9
$("div").animate({width:300},1500);10
$("div").animate({height:100},1500);11
$("div").animate({width:100},1500);12
});13
$("#stop").click(function(){14
$("div").clearQueue();15
});16
});17
</script> 18
<button id="start">开始动画</button>