[图片][图片]db.collection("faultcode").where({ code:this.data.code1,         brand:app.globalData.brand       }).get({ // .get() 获取集合 / 记录数据         success: res => {           let that=this;             this.setData({             code2: res.data[0].code           })                             var code1=that.data.code1           var code2=that.data.code2                    //判断code2是否取到值           app.globalData.faultcode=res.data[0].code//讲取得的值赋给全局变量faultcode           // console.log(app.globalData.faultcode)               if(res.data[0].code!='')               {                  wx.navigateTo({                   url: '/pages/E1/E1',                  })               } else{                 wx.showToast({                              title: '故障代码错误',                 })               }                               },          fail: res => {           wx.showToast({                        title: '查询记录失败',           })         }       })                                    } 为什么if条件满足时会执行if里的语句但是不满足时却不执行else里的语句