获取url中的参数值

一、简单方便

function getQueryString(name) {    var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");    var r = window.location.search.substr(1).match(reg);    if (r != null) return decodeURI(r[2]);    return null;}

二、麻烦

var urlparam = window.location.search;if (urlparam.indexOf("XXX") > 0 ) {   var index = urlparam.indexOf("XXX");   var strXXX = urlparam.substring(index + 3);   var str = strXXX.substring(0, strXXX.indexOf("&"));}