Vue backend management system implementation of paging function example

        <!-- Pagination -->
        <el-pagination
          @size-change="handleSizeChange"
          @current-change="handleCurrentChange"
          :current-page="queryInfo.pagenum"
          :page-sizes="[2, 5, 10, 15]"
          :page-size="queryInfo.pagesize"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total"
        >
        </el-pagination>

    data() {
      return {
        //Request parameter queryInfo: {
          type: 3,
          //Current page number pagenum: 1,
          //Specify the number of pages displayed pagesize: 5,
        },
        goodsList: [],
        //Total data total: 0,
      }
    }
 
  methods: {
      //Get product classification data async getGoodsCate() {
        const { data: res } = await this.$http.get("categories", {
          params: this.queryInfo,
        })
        if (res.meta.status !== 200) {
          this.$message.error("Failed to get parameters")
        }
        this.total = res.data.total
        this.goodsList = res.data.result
        //console.log(this.goodsList)
      },
      //Monitor the number of entries per page handleSizeChange(pagesize) {
        // console.log(`${val} items per page`)
        this.queryInfo.pagesize = pagesize
        this.getGoodsCate()
      },
      //Monitor the current page number handleCurrentChange(pageNum) {
        this.queryInfo.pagenum = pageNum
        this.getGoodsCate()
      },
    },