实现后的效果，点击互相交换位置和距离左边和上角的信息。
要点一：
var now = s_pic_li[0]; for(var i=0; i<s_pic_li.length; i++){ s_pic_li[i].onclick = function(){ if(this == now) return false; var w = now.offsetWidth; var h = now.offsetHeight; var l = now.offsetLeft; var t = now.offsetTop; var w1= this.offsetWidth; var h1 = this.offsetHeight; var l1 = this.offsetLeft; var t1 = this.offsetTop; startrun(now,{width:w1,height:h1,left:l1,top:t1}); startrun(this,{width:w,height:h,left:l,top:t}); now=this; } }
循环给每一块加点击事件，获取交换双方的信息，然后执行运动函数，相关信息做为参数。
最后，上代码：
<!DOCTYPE html> <html> <head> <meta charset="gb2312" /> <title>无标题文档</title> <style> <!-- body,ul,li{margin:0; padding:0; font:18px/1.5 arial; color:#333;} #big_pic{width:500px; height:400px; background:#ccc; text-align:center; position:absolute;} #s_pic li{float:left; width:100px; height:80px; display:inline; background:#06c; text-align:center; position:absolute; top:310px;} --> </style> <script> <!-- window.onload = function(){ var s_pic = document.getElementById("s_pic"); var s_pic_li = s_pic.getElementsByTagName("li"); var now = s_pic_li[0]; for(var i=0; i<s_pic_li.length; i++){ s_pic_li[i].onclick = function(){ if(this == now) return false; var w = now.offsetWidth; var h = now.offsetHeight; var l = now.offsetLeft; var t = now.offsetTop; var w1= this.offsetWidth; var h1 = this.offsetHeight; var l1 = this.offsetLeft; var t1 = this.offsetTop; startrun(now,{width:w1,height:h1,left:l1,top:t1}); startrun(this,{width:w,height:h,left:l,top:t}); now=this; } } } function getstyle(obj,name){ if(obj.currentStyle){ return obj.currentStyle[name]; }else{ return getComputedStyle(obj,false)[name]; } } function startrun(obj,json,fn){ clearInterval(obj.timer); obj.timer = setInterval(function(){ var isall = true; for(var attr in json){ var cur=0; if(attr == "opacity"){ cur = Math.round(parseFloat(getstyle(obj,attr))*100); }else{ cur = parseInt(getstyle(obj,attr)); } var speed = (json[attr] - cur)/8 speed = speed>0?Math.ceil(speed):Math.floor(speed); if(cur != json[attr]){ isall = false; } if(attr == "opacity"){ obj.style.filter = "alpha(opacity="+(cur+speed)+")"; obj.style.opacity = (cur+speed)/100; }else{ obj.style[attr] = cur+speed+"px"; } } if(isall){ clearInterval(obj.timer); if(fn){ fn(); } } },30); } //--> </script> </head> <body> <ul> <li>0</div> <li>1</li> <li>2</li> <li>3</li> <li>4</li> </ul> </body> </html>