话不多说，请看代码：
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>鼠标跟随效果</title> <style type="text/css"> *{margin: 0;padding: 0;} img{position:absolute;top:0;left:0;} </style> </head> <body> <img src="http://www.qdfuns.com/misc.php?mod=attach&genre=editor&aid=21984166dad229792b21c2e1277bece5" alt=""> </body> <script type="text/javascript"> (function(window){ // 获取对象 var img = document.getElementById("img"); // 为页面添加单击事件，鼠标点击时图片滑动到鼠标所在位置 document.onclick = function(event){ var event = event || window.event; // 获取鼠标在页面上的坐标 var pageX = event.pageX || event.clientX + document.documentElement.scrollLeft; var pageY = event.pageY || event.clientY + document.documentElement.scrollTop; // 减去图片自身宽高的一半，使鼠标在图片中间 pageX = pageX - img.offsetWidth/2; pageY = pageY - img.offsetWidth/2; animate(img,{"left":pageX,"top":pageY}); }; // 封装缓动函数 function animate(obj,json,fn){ clearInterval(obj.timer); obj.timer = setInterval(function(){ var flog = true ; for( k in json ){ if( k === "zindex" ){ obj.style[k] = json[k]; }else if( k === "opacity" ){ var leader = getStyle(obj,k) * 100; var target = json[k] * 100; var step = ( target - leader ) / 10 ; step = step > 0 ? Math.ceil( step ) : Math.floor( step ); leader = leader + step ; obj.style[k] = leader / 100; }else{ var leader = parseInt( getStyle(obj,k) ); var target = json[k]; var step = ( target - leader) / 10 ; step = step > 0 ? Math.ceil( step ) : Math.floor( step ); leader = leader + step; obj.style[k] = leader + "px"; }; if( leader !== target ){ flog = false; } } if( flog ){ clearInterval(obj.timer); if( fn ){ fn(); }; }; }, 15) }; // 封装获取计算后样式的函数 function getStyle(obj,attr){ if( window.getComputedStyle ){ return window.getComputedStyle(obj,null)[attr]; }else{ return obj.currentStyle[attr]; }; }; })(window) </script> </html>