//Url解析		function parseURL(url) {		    var a = document.createElement('a');		    a.href = url;		    return {		        source: url,		        protocol: a.protocol.replace(':', ''),		        host: a.hostname,		        port: a.port,		        query: a.search,		        params: (function () {		            var ret = {}, seg = a.search.replace(/^\?/, '').split('&'), len = seg.length, i = 0, s;		            for (; i < len; i++) {		                if (!seg[i]) {		                    continue;		                }		                s = seg[i].split('=');		                ret[s[0]] = s[1];		            }		            return ret;		        })(),		        file: (a.pathname.match(/\/([^\/?#]+)$/i) || [, ''])[1],		        hash: a.hash.replace('#', ''),		        path: a.pathname.replace(/^([^\/])/, '/$1'),		        relative: (a.href.match(/tps?:\/\/[^\/]+(.+)/) || [, ''])[1],		        segments: a.pathname.replace(/^\//, '').split('/')		    };		};

　　使用方法：

　　获取网络协议和获取一个已知参数名的值　　

var url ="http://www.baidu.com?name=aaa";console.log(parseURL(url).protocol)//httpconsole.log(parseURL(url).params.name)//aaa