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我在写Vue的Demo的时候

当我想写一个通过一个表单输入来筛选下方v-for渲染的列表信息的组件的时候，我通过了几种方法去实现。（毕竟不知道通常怎么实现比较好）

  • 通过使用v-for="item in items | filterByMsg msg" 这种方式来通过输入的msg的改变来过滤本来的items数组可以成功。自定义过滤器filterByMsg里面传入用户输入的msg值，使用了indexOf
  • 然后尝试使用computed计算属性去通过msg来计算items应该返回的值，过程中使用indexOf失败。。这个方法始终返回-1（不知为何）
  • 然后尝试使用watch来观察msg输入值的变化来改变数组。indexOf也是始终返回0
  • 用自定义事件在父组件触发事件然后传递msg作为参数过去也可以使用indexOf判断啊=。=GG

不知道是不是因为通过props从父组件传递msg到子组件之后indexOf就会炸掉

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