如何搜索和替换在整个对象中多次出现的字符串，包括值和键？

function searchAndReplace(obj, searchStr, replaceStr) {
  for (let key in obj) {
    if (typeof obj[key] === 'string') {
      // 搜索和替换键
      if (key.includes(searchStr)) {
        const newKey = key.replace(searchStr, replaceStr);
        obj[newKey] = obj[key];
        delete obj[key];
      }
      // 搜索和替换值
      if (obj[key].includes(searchStr)) {
        obj[key] = obj[key].replace(new RegExp(searchStr, 'g'), replaceStr);
      }
    } else if (typeof obj[key] === 'object') {
      // 递归调用搜索和替换
      searchAndReplace(obj[key], searchStr, replaceStr);
    }
  }
}

// 示例对象
const obj = {
  name: 'John',
  age: 30,
  address: {
    street: '123 Main St',
    city: 'New York',
    country: 'USA'
  },
  hobbies: ['reading', 'coding', 'swimming']
};

// 搜索和替换字符串
searchAndReplace(obj, 'o', 'a');

console.log(obj);