js通過a標簽解析url

/*


@function: 通過a標簽解析url標簽
@param:url  url參數是字符串，解析的目標
通過IE6-9 chrome  Firefox測試
/
function parseURL(url) {
//創建一個a標簽
var a =  document.createElement('a');
//將url賦值給標簽的href屬性。
a.href = url;
return {
  source: url,
  protocol: a.protocol.replace(':',''), //協議
  host: a.hostname,   //主機名稱
  port: a.port,   //端口
  query: a.search,  //查詢字符串
  params: (function(){  //查詢參數
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('#',''), //哈希參數
  path: a.pathname.replace(/^([^\/])/,'/$1'), //路徑
  relative: (a.href.match(/tps?:\/\/[^\/]+(.+)/) || [,''])[1],  //相對路徑
  segments: a.pathname.replace(/^\//,'').split('/') //路徑片段
};
}
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