javascript parseUrl函数解析url获取网址url参数

 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('/')
     };
 } 

使用实例：

 var myURL = parseURL('http://abc.com:8080/dir/index.html?id=255&m=hello#top');
 myURL.file; // = 'index.html'
 myURL.hash; // = 'top'
 myURL.host; // = 'abc.com'
 myURL.query; // = '?id=255&m=hello'
 myURL.params; // = Object = { id: 255, m: hello }
 myURL.path; // = '/dir/index.html'
 myURL.segments; // = Array = ['dir', 'index.html']
 myURL.port; // = '8080'
 myURL.protocol; // = 'http'
 myURL.source; // = 'http://abc.com:8080/dir/index.html?id=255&m=hello#top'