<button bindtap="cphm" style="margin-top: 400rpx;" CLASS="cu-btn block bg-blue shadow margin-tb-sm lg">车号</button> <text class="text-xxl">{{cphm}}</text>     cphm(){         wx.chooseLicensePlate({             success:(e)=>{                 console.log(e)                 this.setData({                     cphm:e.plateNumber                 })             }         })     },