vue实现分页数据

Vue 分页实现方法

基础分页组件实现

创建一个分页组件Pagination.vue，包含页码按钮和导航逻辑：

<template>
  <div class="pagination">
    <button @click="prevPage" :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="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: {
    changePage(page) {
      this.$emit('page-changed', page)
    },
    prevPage() {
      if (this.currentPage > 1) {
        this.$emit('page-changed', this.currentPage - 1)
      }
    },
    nextPage() {
      if (this.currentPage < this.totalPages) {
        this.$emit('page-changed', this.currentPage + 1)
      }
    }
  }
}
</script>

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

在父组件中使用分页

<template>
  <div>
    <ul>
      <li v-for="item in paginatedData" :key="item.id">{{ item.name }}</li>
    </ul>
    <Pagination
      :total-items="data.length"
      :items-per-page="itemsPerPage"
      :current-page="currentPage"
      @page-changed="changePage"
    />
  </div>
</template>

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

export default {
  components: { Pagination },
  data() {
    return {
      data: [], // 从API获取的全部数据
      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: {
    changePage(page) {
      this.currentPage = page
    },
    async fetchData() {
      // API数据获取逻辑
      this.data = await api.getItems()
    }
  },
  created() {
    this.fetchData()
  }
}
</script>

服务器端分页实现

对于大数据量，建议使用服务器端分页：

<script>
export default {
  data() {
    return {
      paginatedData: [],
      totalItems: 0,
      itemsPerPage: 10,
      currentPage: 1
    }
  },
  methods: {
    async fetchPaginatedData() {
      const response = await api.getItems({
        page: this.currentPage,
        limit: this.itemsPerPage
      })
      this.paginatedData = response.data
      this.totalItems = response.total
    },
    changePage(page) {
      this.currentPage = page
      this.fetchPaginatedData()
    }
  },
  created() {
    this.fetchPaginatedData()
  }
}
</script>

高级分页功能扩展

实现显示页码范围限制和省略号：

// 在Pagination组件的computed中替换pages方法
pages() {
  const range = []
  const visiblePages = 5 // 可见页码数
  let start = Math.max(1, this.currentPage - Math.floor(visiblePages/2))
  let end = Math.min(this.totalPages, start + visiblePages - 1)

  if (end - start + 1 < visiblePages) {
    start = Math.max(1, end - visiblePages + 1)
  }

  if (start > 1) {
    range.push(1)
    if (start > 2) range.push('...')
  }

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

  if (end < this.totalPages) {
    if (end < this.totalPages - 1) range.push('...')
    range.push(this.totalPages)
  }

  return range
}

使用第三方库

对于快速实现，可以使用现成的分页库如vuejs-paginate:

安装：

npm install vuejs-paginate

使用：

<template>
  <paginate
    :page-count="totalPages"
    :click-handler="changePage"
    :prev-text="'<'"
    :next-text="'>'"
    :container-class="'pagination'"
    :page-class="'page-item'"
  />
</template>

<script>
import Paginate from 'vuejs-paginate'

export default {
  components: { Paginate },
  // 其他逻辑相同
}
</script>