axios的then写法

  handleDelete(index, row) {
      this.$confirm("此操作将永久删除该文件, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      })
        .then(() => {
            //返回一个promise当作then的参数
            return reqDeleteUser(row.UserID)
        })
        .catch(() => {
          this.$message({
            type: "info",
            message: "已取消删除",
          });
          //这个then是删除用户数据的
        }).then(() => {
          Message({
            message: "操作成功",
            type: "success",
            duration: 5 * 1000,
          });
          const totalPage = Math.ceil((this.total - 1) / this.pagesize); // 总页数

          // console.log(totalPage);

          this.page = this.page > totalPage ? totalPage : this.page;
          //发起请求数据因为不用处理接下来的数据
          this.getData(this.page, this.pagesize);
          let OperDesc = `删除了ID为${row.UserID},姓名为${row.UserName}的信息`;
           //返回一个promise当作then的参数
          return reqAddUserOperationLog({
            OperModule2: "用户管理",
            OperType: "删除",
            OperDesc,
          });
        })
        .catch((error) => {})
         //日志的then
        .then((res) => {
          console.log("删除的日志res", res);
        });

    
        
    },