vue分页代码实现

Vue 分页实现方法

基础分页组件实现

创建分页组件 Pagination.vue，包含页码切换逻辑：

<template>
  <div class="pagination">
    <button 
      @click="changePage(currentPage - 1)" 
      :disabled="currentPage === 1"
    >上一页</button>

    <span 
      v-for="page in pages" 
      :key="page"
      @click="changePage(page)"
      :class="{ active: currentPage === page }"
    >{{ page }}</span>

    <button 
      @click="changePage(currentPage + 1)" 
      :disabled="currentPage === totalPages"
    >下一页</button>
  </div>
</template>

<script>
export default {
  props: {
    totalItems: Number,
    itemsPerPage: {
      type: Number,
      default: 10
    },
    currentPage: {
      type: Number,
      default: 1
    }
  },
  computed: {
    totalPages() {
      return Math.ceil(this.totalItems / this.itemsPerPage)
    },
    pages() {
      const range = []
      for (let i = 1; i <= this.totalPages; i++) {
        range.push(i)
      }
      return range
    }
  },
  methods: {
    changePage(page) {
      if (page >= 1 && page <= this.totalPages) {
        this.$emit('page-changed', page)
      }
    }
  }
}
</script>

<style>
.pagination {
  display: flex;
  gap: 5px;
}
.active {
  color: red;
  font-weight: bold;
}
</style>

在父组件中使用分页

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

    <Pagination 
      :total-items="items.length" 
      :items-per-page="itemsPerPage"
      :current-page="currentPage"
      @page-changed="handlePageChange"
    />
  </div>
</template>

<script>
import Pagination from './Pagination.vue'

export default {
  components: { Pagination },
  data() {
    return {
      items: [], // 从API获取的数据
      itemsPerPage: 5,
      currentPage: 1
    }
  },
  computed: {
    paginatedItems() {
      const start = (this.currentPage - 1) * this.itemsPerPage
      const end = start + this.itemsPerPage
      return this.items.slice(start, end)
    }
  },
  methods: {
    handlePageChange(page) {
      this.currentPage = page
    },
    fetchItems() {
      // API请求获取数据
      // this.items = response.data
    }
  },
  created() {
    this.fetchItems()
  }
}
</script>

高级分页优化

对于大数据量分页，可添加页码省略功能：

// 在Pagination组件的computed中替换pages计算
pages() {
  const range = []
  const maxVisible = 5 // 最多显示页码数
  let start = 1
  let end = this.totalPages

  if (this.totalPages > maxVisible) {
    const half = Math.floor(maxVisible / 2)
    start = Math.max(this.currentPage - half, 1)
    end = Math.min(start + maxVisible - 1, this.totalPages)

    if (end - start + 1 < maxVisible) {
      start = end - maxVisible + 1
    }
  }

  for (let i = start; i <= end; i++) {
    range.push(i)
  }

  return range
}

服务器端分页实现

当数据量极大时，应采用服务器端分页：

methods: {
  async fetchPaginatedItems() {
    const response = await axios.get('/api/items', {
      params: {
        page: this.currentPage,
        per_page: this.itemsPerPage
      }
    })
    this.items = response.data.items
    this.totalItems = response.data.total
  },
  handlePageChange(page) {
    this.currentPage = page
    this.fetchPaginatedItems()
  }
}

分页样式优化

使用CSS框架如Bootstrap可快速美化分页：

<template>
  <nav aria-label="Page navigation">
    <ul class="pagination">
      <li class="page-item" :class="{ disabled: currentPage === 1 }">
        <a class="page-link" href="#" @click.prevent="changePage(currentPage - 1)">Previous</a>
      </li>

      <li 
        v-for="page in pages" 
        :key="page"
        class="page-item"
        :class="{ active: currentPage === page }"
      >
        <a class="page-link" href="#" @click.prevent="changePage(page)">{{ page }}</a>
      </li>

      <li class="page-item" :class="{ disabled: currentPage === totalPages }">
        <a class="page-link" href="#" @click.prevent="changePage(currentPage + 1)">Next</a>
      </li>
    </ul>
  </nav>
</template>

以上实现涵盖了Vue分页的主要场景，包括客户端分页、服务器端分页以及样式优化方案。可根据实际项目需求选择适合的实现方式。