javascript获取url参数--parseUrl

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('/')

    };

}

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'