1 function GetQueryString(name) {2    var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)","i");3    var r = window.location.search.substr(1).match(reg);4    if (r!=null) return (r[2]); return null;5 }6 alert(GetQueryString("参数名1"));7 alert(GetQueryString("参数名2"));8 alert(GetQueryString("参数名3"));