获得URL参数值

[cherislive]

  /*
   * 获得URL参数值
   * @param   {String}  URL 地址  // url = window.location;
   * @param   {String}  参数名 可传
   * @return  {String}  返回结果
  */
getQueryString = function (name){
      var pattern    = new RegExp("[?&]" + name +"\=([^&]+)","g");
      var patternDef = new RegExp("[\?\&][^\?\&]+=[^\?\&]+","g");
      var matcher    = pattern.exec(window.location.href);
      var items      = null;
      if(name && matcher != null){
          try{
              items = decodeURIComponent(decodeURIComponent(matcher[1]));   
          }catch(e){
              try{
                  items = decodeURIComponent(matcher[1]);
              }catch(e){
                  items = matcher[1];
              }
          }
      }else{
        patternDef = location.search.match(patternDef);
        if(patternDef != null){
          var tmpArray;
          items = {};
          for(var i = 0; i < patternDef.length; i++){
             tmpArray = patternDef[i].substring(1).split('=');
             items[tmpArray[0]] = tmpArray[1];
          }
        }
      }
      return items;
  };