vue 实现分页

实现分页功能

在Vue中实现分页功能通常需要结合后端API或前端数据处理。以下是两种常见的实现方式：

前端分页实现

适用于数据量较小的情况，所有数据一次性加载到前端后进行分页处理：

<template>
  <div>
    <table>
      <tr v-for="item in paginatedData" :key="item.id">
        <td>{{ item.name }}</td>
      </tr>
    </table>
    <div class="pagination">
      <button @click="prevPage" :disabled="currentPage === 1">Previous</button>
      <span>{{ currentPage }} / {{ totalPages }}</span>
      <button @click="nextPage" :disabled="currentPage === totalPages">Next</button>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      items: [], // 所有数据
      currentPage: 1,
      itemsPerPage: 10
    }
  },
  computed: {
    totalPages() {
      return Math.ceil(this.items.length / this.itemsPerPage)
    },
    paginatedData() {
      const start = (this.currentPage - 1) * this.itemsPerPage
      const end = start + this.itemsPerPage
      return this.items.slice(start, end)
    }
  },
  methods: {
    nextPage() {
      if (this.currentPage < this.totalPages) {
        this.currentPage++
      }
    },
    prevPage() {
      if (this.currentPage > 1) {
        this.currentPage--
      }
    }
  }
}
</script>

后端分页实现

适用于大数据量场景，通过API请求获取分页数据：

<template>
  <div>
    <table>
      <tr v-for="item in items" :key="item.id">
        <td>{{ item.name }}</td>
      </tr>
    </table>
    <div class="pagination">
      <button @click="fetchData(currentPage - 1)" :disabled="currentPage === 1">Previous</button>
      <span>{{ currentPage }} / {{ totalPages }}</span>
      <button @click="fetchData(currentPage + 1)" :disabled="currentPage === totalPages">Next</button>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      items: [],
      currentPage: 1,
      itemsPerPage: 10,
      totalPages: 1
    }
  },
  mounted() {
    this.fetchData(1)
  },
  methods: {
    async fetchData(page) {
      try {
        const response = await axios.get('/api/items', {
          params: {
            page,
            limit: this.itemsPerPage
          }
        })
        this.items = response.data.items
        this.totalPages = response.data.totalPages
        this.currentPage = page
      } catch (error) {
        console.error(error)
      }
    }
  }
}
</script>

使用分页组件库

可以使用现成的分页组件如Element UI的Pagination：

<template>
  <div>
    <el-pagination
      @current-change="handleCurrentChange"
      :current-page="currentPage"
      :page-size="pageSize"
      :total="total"
      layout="prev, pager, next">
    </el-pagination>
  </div>
</template>

<script>
export default {
  data() {
    return {
      currentPage: 1,
      pageSize: 10,
      total: 100
    }
  },
  methods: {
    handleCurrentChange(val) {
      this.currentPage = val
      this.fetchData()
    },
    fetchData() {
      // 获取数据逻辑
    }
  }
}
</script>

分页样式优化

可以为分页控件添加CSS样式增强用户体验：

.pagination {
  margin-top: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
}

.pagination button {
  padding: 5px 10px;
  cursor: pointer;
}

.pagination button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

这些方法可以根据具体需求选择或组合使用，前端分页适合小数据量，后端分页适合大数据量，组件库则提供了快速实现的方案。