element-ui封装分页组件：实现首页、上一页、下一页、末页、跳转按钮

因为el-pagination只有一个插槽，所以通过两个el-pagination插槽分别加入首页、末页按钮，再拼接这两个el-pagination的方式来实现首页、末页按钮
跳转按钮不用加事件，如果el-pagination修改了前往的页数，失焦时会触发current-change事件，造成了一种似乎是点击按钮跳转的效果（实际上点击其他地方失焦也会触发current-change事件）

html 复制代码

<template>
  <div class="pagination">
    <el-pagination
      prev-text="上一页"
      next-text="下一页"
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="tableParams.pageNum"
      :page-sizes="[20, 30, 40]"
      :page-size="tableParams.pageSize"
      layout="total, sizes, slot, prev, pager, next"
      :total="tableParams.total">
      <button
        type="button"
        class="btn-prev"
        @click="jumpFirstPage"
        :disabled="isFirstPage">
        <span>首页</span>
      </button>
    </el-pagination>
    <el-pagination
      prev-text="上一页"
      next-text="下一页"
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="tableParams.pageNum"
      :page-sizes="[20, 30, 40]"
      :page-size="tableParams.pageSize"
      layout="slot, jumper"
      :total="tableParams.total">
      <button
        type="button"
        class="btn-prev"
        @click="jumpLastPage"
        :disabled="isLastPage">
        <span>末页</span>
      </button>
    </el-pagination>
    <el-button
      type="primary"
      size="mini"
      class="ml">
      前往
    </el-button>
  </div>
</template>
<script>
export default {
  props: {
    tableParams: {
      type: Object,
    },
  },
  computed: {
    isFirstPage() {
      // 如果只有1页，禁用首页
      return this.tableParams.pageNum === 1;
    },
    isLastPage() {
      return (
        // 如果只有1页，禁用末页，或者已经处于末页，禁用
        Math.ceil(this.tableParams.total / this.tableParams.pageSize) === 0 ||
        this.tableParams.pageNum ===
          Math.ceil(this.tableParams.total / this.tableParams.pageSize)
      );
    },
  },
  methods: {
    handleSizeChange(val) {
      this.$emit('size-change', val);
    },
    handleCurrentChange(val) {
      this.$emit('current-change', val);
    },
    jumpFirstPage() {
      this.handleCurrentChange(1);
    },
    jumpLastPage() {
      this.handleCurrentChange(
        Math.ceil(this.tableParams.total / this.tableParams.pageSize)
      );
    },
  },
};
</script>
<style lang="scss" scoped>
.pagination {
  padding: 6px;
  border: 1px solid #c0eae7;
  border-top: 0px;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  border-radius: 4px;
  border-top-left-radius: 0px;
  border-top-right-radius: 0px;
}
:deep(.el-button--mini) {
  padding: 5px 15px;
  height: 24.22px;
  margin-left: 10px;
}
</style>

使用

html 复制代码

   <Pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :tableParams="tableParams"></Pagination>

组件默认pageNum 从1开始，如果接口是从0开始，传参时-1即可

js 复制代码

 tableParams: {
        pageNum: 1,
        pageSize: 30,
        total: 0,
      },

js 复制代码

  handleSizeChange(val) {
      // 条数变更后如果pageNum不变可能会导致查询为空，所以还原为1
      this.tableParams.pageNum = 1;
      this.tableParams.pageSize = val;
      this.getTableData();
    },
    handleCurrentChange(val) {
      this.tableParams.pageNum = val;
      this.getTableData();
    },

js 复制代码

 async getTableData() {
      this.tableData = [];
      this.tableLoading++;
      const { data: res } = await http({
        method: 'get',
        url: '/show/listData',
        data: {},
        params: {
          pageIndex: this.tableParams.pageNum,
          pageSize: this.tableParams.pageSize,
        },
      });
      if (res.code === 0) {
        this.tableData = res.data;
        this.tableParams.total = res.total;
      }
      this.tableLoading--;
    },