[CSS+HTML]多个层展开合拢效果，动画效果

2014-08-22 11:13:33 -0400

代码复制

<script type="text/javascript">
/*
    函数名称: Scroll
    Scroll(obj, h, w, s)
    参数说明:
        obj,[object]  id值或对象.     必需
          h,[height]  展开后的高度.   可选(默认为200px)
          w,[width]  展开后的宽度.   可选(默认为200px)
          s,[speed]   展开速度,值越小展开速度越慢. 可选(默认为1.2){建议取值为1.1到2.0之间[例如:1.17]}.
    函数返回值:
        true    展开
        false   关闭
*/
function Scroll(obj, h, w, s){
    var h = h || 200;
    var w= w || 300;
    var s = s || 1.2;
    var obj = typeof(obj)=="string"?document.getElementById(obj):obj;
    if(obj == undefined){return false;}
    var body = document.getElementsByTagName('body')[0];
    var status = obj.getAttribute("status")==null;
    var oh = parseInt(obj.offsetHeight) - Math.floor(obj.style.borderTopWidth) - Math.floor(obj.style.borderBottomWidth);
    var ow = parseInt(obj.offsetWidth) - Math.floor(obj.style.borderLeftWidth) - Math.floor(obj.style.borderRightWidth);
    if(obj.getAttribute("oldHeight") == null){
        obj.setAttribute("oldHeight", oh);
    }else{
        var oldH = Math.ceil(obj.getAttribute("oldHeight"));
    }
    if(obj.getAttribute("oldWidth") == null){
        obj.setAttribute("oldWidth", ow);
    }else{
        var oldW = Math.ceil(obj.getAttribute("oldWidth"));
    }
    var reSet = function(){
        if(status){
            if(oh < h){
                oh = Math.ceil(h-(h-oh)/s);
                obj.style.height = oh+"px";
            }
            if(ow < w){
                ow = Math.ceil(w-(w-ow)/s);
                obj.style.width = ow+"px";
            }
            if(oh >= h){
                obj.setAttribute("status",false);
                window.clearInterval(IntervalId);
           }
        }else{
            obj.style.height = oldH+"px";
            obj.style.width = oldW+"px";
            obj.removeAttribute("status");
            window.clearInterval(IntervalId);
        }
    }
    var IntervalId = window.setInterval(reSet,10);
     return status;
}
window.onload= function(){
    var $ = function(id){return document.getElementById(id)};
    var ad = $('test').getElementsByTagName('span');
    for (var i=0, l=ad.length; i<l; i++) {
      ad[i].onclick = function(){
          var ad1 = $('test').getElementsByTagName('span');
          for (var i1=0, l1=ad.length; i1<l1; i1++) {
            if(ad1[i1].getAttribute('status') == false){
              Scroll(ad1[i1], 400, 60, 1.2);
            }
          }
          Scroll(this, 400, 60, 1.2);
       }
    }
}
</script>
<style type="text/css">
#test span{
  float:left;
  margin-left: 10px;
  width: 100px;
  text-align: center;
  border:1px solid #ccc;
  cursor:pointer;
}
</style>
</head>
<body>
<div id='test'>
  <span>一</span>
  <span>二</span>
  <span>三</span>
  <span>四</span>
</div>
</body>
</html>

代码演示

一二三四

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