js通过location.search来获取页面传来的参数

function GetQueryString(name) { 

var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)","i"); 

var r = window.location.search.substr(1).match(reg); 

if (r!=null) return (r[2]); return null; 

}

var sname = GetQueryString("name"); 

if(sname!=null) 

{ 

var sname_ = decodeURIComponent(sname); 

alert(sname_); 

}