/*

* @function: 通过a标签解析url标签

* @param:url  url参数是字符串，解析的目标

  通过IE6-9 chrome  Firefox测试

*

*/

function parseURL(url) {

  //创建一个a标签

  var a =  document.createElement('a');

  //将url赋值给标签的href属性。

  a.href = url;

  return {

    source: url,

    protocol: a.protocol.replace(':',''), //协议

    host: a.hostname,   //主机名称

    port: a.port,   //端口

    query: a.search,  //查询字符串

    params: (function(){  //查询参数

      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], //文件名

    hash: a.hash.replace('#',''), //哈希参数

    path: a.pathname.replace(/^([^\/])/,'/$1'), //路径

    relative: (a.href.match(/tps?:\/\/[^\/]+(.+)/) || [,''])[1],  //相对路径

    segments: a.pathname.replace(/^\//,'').split('/') //路径片段

  };

}

{

file: "dom_obj_anchor.asp",

hash: "id2",

host: "www.w3school.com.cn",

params: {type: "2"},

path: "/jsref/dom_obj_anchor.asp",

port: "80",

protocol: "http",

query: "?type=2",

relative: "/jsref/dom_obj_anchor.asp?type=2#id2",

segments: [0: "jsref",1: "dom_obj_anchor.asp"],

source: http://www.w3school.com.cn/jsref/dom_obj_anchor.asp?type=2#id2

}