const arr = [
  {
    stuNo: 100,
    stuName: "张三",
    stuClass: 1,
    teacherNo: 5,
    teacherName: "王涛"
  },
  {
    stuNo: 102,
    stuName: "李思",
    stuClass: 10,
    teacherNo: 795,
    teacherName: "李海波"
  },
];

type Props<T extends string> = {
  [key in T]: any;
};

type ProcessedArray<T extends string, U extends Props<T>[]> = {
  [K in T]: U[number][K];
}[];

function getSubItemsFromArray<T extends string, U extends Props<T>[]>(arr: U,...props: T[]): ProcessedArray<T, U> {
  return arr.map((item) => {
    const newObj: Partial<Props<T>> = {};
    props.forEach((prop) => {
      newObj[prop] = item[prop];
    });
    return newObj as Props<T>;
  });
}


getSubItemsFromArray(arr, "stuName", "stuNo").forEach(item => {
  console.log(item)
})

老师，这样实现OK吗