js获取（URL）地址栏参数

//获取地址栏参数 //url为空时为调用当前url地址 //调用方法为 var params = getPatams();function getParams(url) {var theRequest = new Object();if (!url)url = location.href;if (url.indexOf("?") !== -1){var str = url.substr(url.indexOf("?") + 1) + "&";var strs = str.split("&");for (var i = 0; i < strs.length - 1; i++){var key = strs[i].substring(0, strs[i].indexOf("="));var val = strs[i].substring(strs[i].indexOf("=") + 1);theRequest[key] = val;}}return theRequest;}var params = getParams();//获取地址栏上的userNamevar userName = params.userName;