Vue コンポーネント通信におけるデータ フィルタリング ソリューションの比較

// 父组件
<template>
  <div>
    <child-component :data="originalData"></child-component>
  </div>
</template>
<script>
  import ChildComponent from './ChildComponent.vue';

  export default {
    components: {
      ChildComponent
    },
    data() {
      return {
        originalData: [
          { name: 'Alice', age: 20 },
          { name: 'Bob', age: 25 },
          { name: 'Charlie', age: 30 }
        ]
      }
    },
    computed: {
      filteredData() {
        // 过滤数据的条件
        return this.originalData.filter(item => item.age > 25);
      }
    }
  };
</script>

// 子组件
<template>
  <div>
    <ul>
      <li v-for="item in filteredData" :key="item.name">{{ item.name }}</li>
    </ul>
  </div>
</template>
<script>
  export default {
    props: ['data']
  };
</script>

// 父组件
<template>
  <div>
    <child-component :data="originalData | filterData"></child-component>
  </div>
</template>
<script>
  import ChildComponent from './ChildComponent.vue';

  export default {
    components: {
      ChildComponent
    },
    data() {
      return {
        originalData: [
          { name: 'Alice', age: 20 },
          { name: 'Bob', age: 25 },
          { name: 'Charlie', age: 30 }
        ]
      }
    },
    filters: {
      filterData(data) {
        return data.filter(item => item.age > 25);
      }
    }
  };
</script>

// 子组件
<template>
  <div>
    <ul>
      <li v-for="item in filteredData" :key="item.name">{{ item.name }}</li>
    </ul>
  </div>
</template>
<script>
  export default {
    props: ['data']
  };
</script>

// 父组件
<template>
  <div>
    <child-component :data="originalData" @filterData="filterData"></child-component>
  </div>
</template>
<script>
  import ChildComponent from './ChildComponent.vue';

  export default {
    components: {
      ChildComponent
    },
    data() {
      return {
        originalData: [
          { name: 'Alice', age: 20 },
          { name: 'Bob', age: 25 },
          { name: 'Charlie', age: 30 }
        ]
      }
    },
    methods: {
      filterData(filter) {
        // 过滤数据的逻辑
        if (filter === 'age') {
          return this.originalData.filter(item => item.age > 25);
        } else if (filter === 'name') {
          return this.originalData.filter(item => item.name.startsWith('A'));
        }
      }
    }
  };
</script>

// 子组件
<template>
  <div>
    <button @click="filterByAge">Filter by age</button>
    <button @click="filterByName">Filter by name</button>
    <ul>
      <li v-for="item in filteredData" :key="item.name">{{ item.name }}</li>
    </ul>
  </div>
</template>
<script>
  export default {
    props: ['data'],
    methods: {
      filterByAge() {
        this.$emit('filterData', 'age');
      },
      filterByName() {
        this.$emit('filterData', 'name');
      }
    }
  };
</script>