Vue 复选框过滤器组件不起作用

Vue Checkbox filter component not working

在单个文件组件中,我制作了一个复选框数组:

    <label 
      v-for="(category, index) in categories" 
      :key="index"
     >
      <input type="checkbox" :value="category.value"
      @change="emitSearchValue">
      <span class="ml-2 text-gray-700 capitalize">{{ category.value }}</span>
    </label>

我使用 EventBus 将数据传输到 List 组件:

methods: {
    emitSearchValue() {
      EventBus.$emit('checked-value', 'this.checkedCategories')
    }
  }

在 List 组件中,我监听 EventBus:

created() {
 EventBus.$on('checked-value', (checkedCategories) => {
  this.checkedvalue = checkedCategories;
 })
}

然后我计算的 属性 看起来像这样:

computed: {
 filteredData() {

   return this.blogs.filter(blog =>
   // if there are no checkboxes checked. all values will pass otherwise the category must be included
    !this.checkedCategories.length || this.checkedCategories.includes(blog.category)
   )
  }
},

在控制台中我得到:

[Vue warn]: Error in render: "TypeError: Cannot read property 'length' of undefined"

这里是 link 到 sandbox

这里有什么问题吗?

将计算属性 filteredData 更改为:

computed: {
    filteredData() {
      if(!this.checkedvalue.length) return this.experiences

      return this.experiences.filter(experience =>
        this.checkedvalue.includes(experience.category)
      );
    }
}