element-ui分页功能删除最后一条数据返回上一页

删除最后一页的数据怎么返回上一页

 // 删除人员信息
    deletePersonInfo(item) {
      this.$confirm("你确定要删除吗，请三思,后果自负", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      }).then(() => {
        deletePerson(item.id, this.communityId)
          .then((res) => {
            if (res.status == 2000) {
              let totalPage = Math.ceil((this.total - 1) / this.pageSize); // 总页数
              let currentPage =
                this.currentPage > totalPage ? totalPage : this.currentPage;
              this.currentPage = currentPage < 1 ? 1 : currentPage;
              this.$message.success("删除成功");
              this.findPerson();
            }
          })
          .catch(console.log);
      });

 let currentPage =  this.currentPage > totalPage ? totalPage : this.currentPage;    
 this.currentPage = currentPage < 1 ? 1 : currentPage;