为什么报错movie 未定义呢？

Question

properties: {
movie:Object
},
methods: {
onGoToDetail(event){
console.log(event.properties.movie.id)
// const mid=event.properties.movie.id
wx.navigateTo({
url:’/pages/movie-detail/movie-detail?mid=’+mid
})
}
}
报错：
TypeError: Cannot read property ‘movie’ of undefined
at se.onGoToDetail (index.js? [sm]:22)
at Object.n.safeCallback (VM2429 WAService.js:2)
at VM2429 WAService.js:2
at a (VM2429 WAService.js:2)
at VM2429 WAService.js:2
at n (VM2429 WAService.js:2)
at VM2429 WAService.js:2
at VM2429 WAService.js:2
at i (VM8 asdebug.js:1)
at c (VM8 asdebug.js:1)

Answer 1

网络连接已断开 2021-05-19 17:57:23

说明你这个 move没有传递过来，检查下代码

• 提问者 慕函数311512 #1

  为什么movie组件的.wxml里movie能正常显示，js里的movie没有值呢？
  methods: {
          onGoToDetail(event){
              console.log(event)
              // const mid=event.properties.movie.id
              wx.navigateTo({
                  url:'/pages/movie-detail/movie-detail?mid='+mid
              })
          }
      }
  打印了一下event，显示
  {type: "tap", timeStamp: 117591, target: {…}, currentTarget: {…}, mark: {…}, …}
  changedTouches: [{…}]
  currentTarget: {id: "", offsetLeft: 118, offsetTop: 75, dataset: {…}}
  detail: {x: 152.5, y: 144.75}
  mark: {}
  mut: false
  target: {id: "", offsetLeft: 118, offsetTop: 75, dataset: {…}}
  timeStamp: 117591
  touches: [{…}]
  type: "tap"
  _userTap: true
  __proto__: Object
  
  单击之后event里id没有值

• 提问者 慕函数311512 #2

  非常感谢！

• 提问者 慕函数311512 #3

  找到问题了，是this