text: var SIGN_REGEXP = /([yMdhsm])(\1*)/g
  var DEFAULT_PATTERN = 'yyyy-MM-dd'
  function padding(s, len) {
    var len2 = len - (s + '').length
    for (var i = 0; i < len2; 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) {
        date.setHours(date.getHours() - 8)
        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
      }
  
    }
  
  }
  