在javascript中检索深度嵌套对象时不使用find两次

function findValue(obj, target) {
  for (let key in obj) {
    if (obj.hasOwnProperty(key)) {
      if (typeof obj[key] === 'object') {
        const result = findValue(obj[key], target);
        if (result) {
          return result;
        }
      } else if (obj[key] === target) {
        return obj[key];
      }
    }
  }
  return null;
}

const nestedObj = {
  a: {
    b: {
      c: 'target',
    },
  },
};

const targetValue = findValue(nestedObj, 'target');
console.log(targetValue); // 输出 'target'

function findValue(obj, target) {
  const keys = Object.keys(obj);
  const result = keys.reduce((acc, key) => {
    if (typeof obj[key] === 'object' && !Array.isArray(obj[key])) {
      return acc || findValue(obj[key], target);
    }
    return acc || (obj[key] === target ? obj[key] : null);
  }, null);
  return result;
}

const nestedObj = {
  a: {
    b: {
      c: 'target',
    },
  },
};

const targetValue = findValue(nestedObj, 'target');
console.log(targetValue); // 输出 'target'