<div id="id1" style="background-color: yellow;width:100%; height:0px; position:absolute; right:0; bottom:0px;">122222</div>
<script language="javascript" type="text/javascript">
$("#id1").animate({height:‘200px‘},[10000]);
</script>
<div id="id1" style="background-color: yellow;width:100%; height:0px; position:absolute; right:0; bottom:0px;">122222</div>
<script language="javascript" type="text/javascript">
$("#id1").animate({height:‘200px‘},[10000]);
</script>
原文：https://www.cnblogs.com/937522zy/p/8250292.html