text: var SIGN_REGEXP = /([yMdhsm])(\1*)/g;
  var DEFAULT_PATTERN = 'yyyy-MM-dd';
  function padding(s, len) {
    var len = len - (s + '').length;
    for (var i = 0; i < len; i++) { s = '0' + s; }
    return s;
  };
  
  export default {
    getQueryStringByName: function (name) {
      var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");
      var r = window.location.search.substr(1).match(reg);
      var context = "";
      if (r != null)
      context = r[2];
      reg = null;
      r = null;
      return context == null || context == "" || context == "undefined" ? "" : context;
    },
    formatDate: {
  
      format: function (date, pattern) {
        pattern = pattern || DEFAULT_PATTERN;
        return pattern.replace(SIGN_REGEXP, function ($0) {
          switch ($0.charAt(0)) {
            case 'y': return padding(date.getFullYear(), $0.length);
            case 'M': return padding(date.getMonth() + 1, $0.length);
            case 'd': return padding(date.getDate(), $0.length);
            case 'w': return date.getDay() + 1;
            case 'h': return padding(date.getHours(), $0.length);
            case 'm': return padding(date.getMinutes(), $0.length);
            case 's': return padding(date.getSeconds(), $0.length);
          }
        });
      },
      parse: function (dateString, pattern) {
        var matchs1 = pattern.match(SIGN_REGEXP);
        var matchs2 = dateString.match(/(\d)+/g);
        if (matchs1.length === matchs2.length) {
          var _date = new Date(1970, 0, 1);
          for (var i = 0; i < matchs1.length; i++) {
            var _int = parseInt(matchs2[i]);
            var sign = matchs1[i];
            switch (sign.charAt(0)) {
              case 'y': _date.setFullYear(_int); break;
              case 'M': _date.setMonth(_int - 1); break;
              case 'd': _date.setDate(_int); break;
              case 'h': _date.setHours(_int); break;
              case 'm': _date.setMinutes(_int); break;
              case 's': _date.setSeconds(_int); break;
            }
          }
          return _date;
        }
        return null;
      }
  
    }
  
  };
  