编写一个对对象数组进行排序的函数(通过使用另一个对象来指定排序路径和顺序)

function sortByPathAndOrder(arr, sortObj) {
  // 检查排序对象是否为空
  if (Object.keys(sortObj).length === 0) {
    return arr;
  }

  // 获取排序路径和顺序
  const path = sortObj.path;
  const order = sortObj.order === 'desc' ? -1 : 1;

  // 对数组进行排序
  arr.sort((a, b) => {
    // 获取排序字段的值
    const valueA = getValueByPath(a, path);
    const valueB = getValueByPath(b, path);

    // 根据排序顺序比较值
    if (valueA < valueB) {
      return -1 * order;
    } else if (valueA > valueB) {
      return 1 * order;
    } else {
      return 0;
    }
  });

  return arr;
}

// 根据路径获取对象的值
function getValueByPath(obj, path) {
  const keys = path.split('.');
  let value = obj;

  for (let key of keys) {
    value = value[key];
    if (value === undefined) {
      break;
    }
  }

  return value;
}

const arr = [
  { name: 'John', age: 30, score: { math: 80, english: 90 } },
  { name: 'Alice', age: 25, score: { math: 90, english: 85 } },
  { name: 'Bob', age: 35, score: { math: 75, english: 95 } }
];

const sortObj = { path: 'score.math', order: 'desc' };

const sortedArr = sortByPathAndOrder(arr, sortObj);
console.log(sortedArr);

[
  { name: 'Alice', age: 25, score: { math: 90, english: 85 } },
  { name: 'John', age: 30, score: { math: 80, english: 90 } },
  { name: 'Bob', age: 35, score: { math: 75, english: 95 } }
]