vue实现分页教程

Vue实现分页的方法

使用Element UI的分页组件

Element UI提供了一个现成的分页组件el-pagination，可以快速实现分页功能。安装Element UI后，在组件中引入并使用：

<template>
  <el-pagination
    @size-change="handleSizeChange"
    @current-change="handleCurrentChange"
    :current-page="currentPage"
    :page-sizes="[10, 20, 30, 40]"
    :page-size="pageSize"
    layout="total, sizes, prev, pager, next, jumper"
    :total="total">
  </el-pagination>
</template>

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

自定义分页组件

如果需要自定义分页组件，可以通过计算页码和监听点击事件实现：

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

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

结合后端API实现分页

通常分页需要后端支持，前端传递页码和每页条数，后端返回对应数据：

methods: {
  fetchData() {
    axios.get('/api/data', {
      params: {
        page: this.currentPage,
        size: this.pageSize
      }
    }).then(response => {
      this.dataList = response.data.content;
      this.total = response.data.totalElements;
    });
  }
}

使用Vuex管理分页状态

在大型应用中，可以使用Vuex集中管理分页状态：

// store.js
export default new Vuex.Store({
  state: {
    pagination: {
      currentPage: 1,
      pageSize: 10,
      total: 0
    }
  },
  mutations: {
    setCurrentPage(state, page) {
      state.pagination.currentPage = page;
    },
    setPageSize(state, size) {
      state.pagination.pageSize = size;
    },
    setTotal(state, total) {
      state.pagination.total = total;
    }
  }
});

响应式分页

结合Vue的响应式特性，当分页参数变化时自动获取数据：

watch: {
  currentPage: {
    handler: 'fetchData',
    immediate: true
  },
  pageSize: {
    handler: 'fetchData',
    immediate: true
  }
}