wx.openBusinessView({
    businessType: 'weappOrderConfirm',
    extraData: {
      merchant_id: '1230000109',
      merchant_trade_no: '1234323JKHDFE1243252',
      transaction_id: '420123123123123123123'
    },
    success() {
      //dosomething
    },
    fail() {
      //dosomething
    },
    complete() {
      //dosomething
    }
  });