vue 解决computed修改data数据的问题

data () {
  return {
   fold: false
 }
}

computed:{
  listShow: {
    get: function () {
      if (!this.totalCount) {
       return false
      }
      return this.fold
     },
    set: function () {
      if (!this.totalCount) {
      this.fold = false
      return false
    }
  }
}

methods: {
  toggleList () {
   if (!this.totalCount) {
    return
   }
   this.listShow = false//这里需要调用一下
   this.fold = !this.fold
  },
}