微信小程序踩坑记

setData

TypeError: Cannot read property '__methodCaller' of undefined

remove(e){
    let todoIndex = e.currentTarget.dataset.todoIndex
   let todoList = this.data.todoList
   todoList.splice(todoIndex,1)
   this.setData({
           todoList
   })
}

在删除数组元素时setData会报错

TypeError: Cannot read property '__methodCaller' of undefined

解决办法 : 使用setTimeout

remove(e){
   let todoIndex = e.currentTarget.dataset.todoIndex
   let todoList = this.data.todoList
   todoList.splice(todoIndex,1)
   setTimeout(()=>{
        this.setData({
            todoList
           })
   },100)
}