分页用vue实现

分页功能实现（Vue）

基础分页组件

创建 Pagination.vue 组件：

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

    <span v-for="page in pages" :key="page">
      <button 
        @click="changePage(page)"
        :class="{ active: currentPage === page }"
      >{{ page }}</button>
    </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 = []
      const start = Math.max(1, this.currentPage - 2)
      const end = Math.min(this.totalPages, this.currentPage + 2)

      for (let i = start; i <= end; i++) {
        range.push(i)
      }
      return range
    }
  },
  methods: {
    changePage(page) {
      if (page >= 1 && page <= this.totalPages) {
        this.$emit('page-changed', page)
      }
    }
  }
}
</script>

<style>
.pagination button {
  margin: 0 5px;
  padding: 5px 10px;
}
.pagination button.active {
  background-color: #42b983;
  color: white;
}
</style>

在父组件中使用

<template>
  <div>
    <!-- 数据列表 -->
    <ul>
      <li v-for="item in paginatedData" :key="item.id">
        {{ item.name }}
      </li>
    </ul>

    <!-- 分页组件 -->
    <Pagination
      :total-items="data.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 {
      data: [], // 从API获取的数据
      itemsPerPage: 10,
      currentPage: 1
    }
  },
  computed: {
    paginatedData() {
      const start = (this.currentPage - 1) * this.itemsPerPage
      const end = start + this.itemsPerPage
      return this.data.slice(start, end)
    }
  },
  methods: {
    handlePageChange(page) {
      this.currentPage = page
    }
  }
}
</script>

服务器端分页

当数据量很大时，建议使用服务器端分页：

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

分页优化技巧

添加跳转输入框：

<input 
  type="number" 
  v-model.number="jumpPage" 
  min="1" 
  :max="totalPages"
  @keyup.enter="changePage(jumpPage)"
>
<button @click="changePage(jumpPage)">跳转</button>

添加数据量选择器：

<select v-model="itemsPerPage" @change="handlePageSizeChange">
  <option value="5">5条/页</option>
  <option value="10">10条/页</option>
  <option value="20">20条/页</option>
</select>

响应式分页控制

在移动端显示简化分页：

computed: {
  pages() {
    if (window.innerWidth < 768) {
      return [this.currentPage]
    } else {
      const range = []
      const start = Math.max(1, this.currentPage - 2)
      const end = Math.min(this.totalPages, this.currentPage + 2)

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