Vue技术开发中如何处理大量数据的渲染和优化

<template>
  <div>
    <div v-for="item in currentData" :key="item.id">{{ item.name }}</div>
    <pagination :total="total" :current="currentPage" @change="changePage"></pagination>
  </div>
</template>

<script>
import Pagination from 'vue-pagination'

export default {
  components: {
    Pagination
  },
  data() {
    return {
      data: [], // 所有数据
      pageSize: 10, // 每页数据量
      currentPage: 1 // 当前页数
    };
  },
  computed: {
    total() {
      return Math.ceil(this.data.length / this.pageSize); // 总页数
    },
    currentData() {
      const start = (this.currentPage - 1) * this.pageSize;
      const end = start + this.pageSize;
      return this.data.slice(start, end); // 当前页的数据
    }
  },
  methods: {
    changePage(page) {
      this.currentPage = page;
    }
  }
};
</script>

<template>
  <virtual-list
    :data-key="'id'"
    :data-sources="data"
    :data-component="#list-item"
    :extraProps="{ pageSize: 50 }"
  >
    <li id="list-item" slot-scope="{ item }">
      {{ item.name }}
    </li>
  </virtual-list>
</template>

<script>
import VirtualList from 'vue-virtual-scroll-list'

export default {
  components: {
    VirtualList
  },
  data() {
    return {
      data: [] // 所有数据
    };
  }
};
</script>

<template>
  <div>
    <div v-for="item in filteredData" :key="item.id">{{ item.name }}</div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      data: [], // 所有数据
      filter: '' // 过滤条件
    };
  },
  computed: {
    filteredData() {
      return this.data.filter(item => item.name.includes(this.filter)); // 根据过滤条件筛选数据
    }
  }
};
</script>