html Div层的展开与收缩的特效源代码
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://www.zuidaima.com/share/1550463332338688.htm
<title>div展开收缩代码-www.zuidaima.com-最代码</title><style>* { 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;}</style><script>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<=0){d.style.display='none';clearInterval(iIntervalId);}else{h-=50;//设置层收缩的速度d.style.height=h+'px';}}iIntervalId=setInterval(dmove,2);}function $use(targetid,objN){var d=$(targetid);var sb=$(objN);if (d.style.display=="block"){ $D2(targetid); d.style.display="none"; sb.innerHTML="展开"; } else { var p=document.getElementsByTagName("p"); var span=document.getElementsByTagName("span"); for(var i=0,l=p.length;i<l;i++){ if(p[i]!=d){ p[i].style.height=0; p[i].style.display="none"; span[i].innerHTML="展开"; } } $D(targetid); d.style.display="block"; sb.innerHTML='收缩'; }}</script><div class="class1"> <h1>div展开收缩效果</h1> <span id="stateBut" onclick="$use('class1content','stateBut')">展开</span> <p id="class1content">something.........</p>
</div><div class="class1"> <h1>div展开收缩效果</h1> <span id="stateBut1" onclick="$use('class2content','stateBut1')">展开</span> <p id="class2content">something.........</p>
</div><div class="class1"> <h1>div展开收缩效果</h1> <span id="stateBut2" onclick="$use('class3content','stateBut2')">展开</span> <p id="class3content">wojiade</p>
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