text: /**
   * 相減兩個bet
   * @param {*} bet 投注object
   */
  var plusBet = function(a, b) {
    var _bet = {
      banker: 0,
      player: 0,
      bankerking: 0,
      playerking: 0,
      tie: 0,
      tiepair: 0,
      bpair: 0,
      ppair: 0
    }
    _bet['banker'] = a['banker'] + b['banker']
    _bet['player'] = a['player'] + b['player']
    _bet['bankerking'] = a['bankerking'] + b['bankerking']
    _bet['playerking'] = a['playerking'] + b['playerking']
    _bet['tie'] = a['tie'] + b['tie']
    _bet['tiepair'] = a['tiepair'] + b['tiepair']
    _bet['bpair'] = a['bpair'] + b['bpair']
    _bet['ppair'] = a['ppair'] + b['ppair']
    return _bet
  }
  
  module.exports = plusBet
  