原文：html Div层的展开与收缩的特效源代码下载
源代码下载地址：http://HdhCmsTestzuidaima测试数据/share/1550463332338688.htm
div展开收缩代码-HdhCmsTestzuidaima测试数据-最代码 * { margin:0; padding:0;}body { text-align:center; font:75% Verdana, Arial, Helvetica, sans-serif;}h1 { font:125% Arial, Helvetica, sans-serif; text-align:left; font-weight:bolder; background:#333; padding:3px; display:block; color:#99CC00}.class1 { width:40%; background:#CCC; position:relative; margin:0 auto; padding:5px;}span { position:absolute; right:10px; top:8px; cursor: pointer; color:yellow;}p { text-align:left; line-height:20px; background:#333; padding:3px; margin-top:5px; color:#99CC00}#class1content, #class2content,#class3content { height:50px;overflow:hidden;display:none;} function $(element){return element = document.getElementById(element);}function $D(element){var d=$(element);var h=d.offsetHeight;var maxh=300;function dmove(){if(h>=maxh){d.style.height='300px';clearInterval(iIntervalId);}else{h+=50; //设置层展开的速度d.style.display='block';d.style.height=h+'px';}}iIntervalId=setInterval(dmove,2);}function $D2(element){var d=$(element);var h=d.offsetHeight;var maxh=300;function dmove(){if(h
div展开收缩效果
展开 something.........
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