vue中分页的实现

分页组件实现

在Vue中实现分页通常需要结合后端API的分页数据，前端处理分页逻辑并渲染分页器。以下是两种常见实现方式：

基础分页组件

<template>
  <div class="pagination">
    <button @click="prevPage" :disabled="currentPage === 1">上一页</button>
    <span v-for="page in pages" :key="page">
      <button 
        @click="goToPage(page)"
        :class="{ active: currentPage === page }"
      >{{ page }}</button>
    </span>
    <button @click="nextPage" :disabled="currentPage === totalPages">下一页</button>
  </div>
</template>

<script>
export default {
  props: {
    totalItems: Number,
    itemsPerPage: Number,
    currentPage: Number
  },
  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: {
    prevPage() {
      this.$emit('page-changed', this.currentPage - 1)
    },
    nextPage() {
      this.$emit('page-changed', this.currentPage + 1)
    },
    goToPage(page) {
      this.$emit('page-changed', page)
    }
  }
}
</script>

结合API请求的分页

父组件调用示例

<template>
  <div>
    <data-table :items="items" />
    <pagination 
      :total-items="totalItems"
      :items-per-page="10"
      :current-page="currentPage"
      @page-changed="fetchData"
    />
  </div>
</template>

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

export default {
  components: { Pagination },
  data() {
    return {
      items: [],
      totalItems: 0,
      currentPage: 1
    }
  },
  mounted() {
    this.fetchData(1)
  },
  methods: {
    async fetchData(page) {
      const response = await axios.get('/api/items', {
        params: { page, limit: 10 }
      })
      this.items = response.data.items
      this.totalItems = response.data.total
      this.currentPage = page
    }
  }
}
</script>

使用第三方库

对于复杂分页需求，可以考虑使用现成的分页组件库：

Element UI分页

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

Vuetify分页

<v-pagination
  v-model="page"
  :length="totalPages"
  :total-visible="7"
></v-pagination>

分页样式优化

添加CSS样式增强分页器视觉效果：

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

.pagination button {
  margin: 0 5px;
  padding: 5px 10px;
  border: 1px solid #ddd;
  background: white;
  cursor: pointer;
}

.pagination button.active {
  background: #42b983;
  color: white;
  border-color: #42b983;
}

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

以上实现方案可根据实际项目需求进行调整，关键点在于维护当前页码状态、计算总页数并通过事件通知父组件页码变化。