<!DOCTYPE html><html> <head> <meta charset="UTF-8"> <title></title> <style type="text/css"> div{ width: 100px; height: 100px; background: #CCC; position: absolute; } </style> <script type="text/javascript"> function getPos(ev){ var ?scrollTop=document.getElement.scrollTop||document.body.scrollTop; var ?scrolleft=document.getElement.scrolleft||document.body.scrolleft; return{x:ev.clientX+scrollLeft,y:ev.clientY+scrollTop} } document.onmousemove= function(ev){ var oEvent=ev||event; var odiv=document.getElementById("div1"); var pos=getPos(oEvent); odiv.style.left=pos.x+"px"; ? ?odiv.style.top=pos.y+"px"; } </script> </head> <body style="height: 2000px;"> <div id="div1"></div> </body></html>
這段代碼什么意思,特別是封裝那塊
Youruncle
2016-08-20 11:58:15