遍历嵌套数据并显示对象属性和值

function traverseData(data) {
  if (typeof data === 'object' && data !== null) {
    Object.getOwnPropertyNames(data).forEach(function (key) {
      console.log(key + ': ' + data[key]);
      traverseData(data[key]); // 递归调用遍历嵌套数据
    });
  } else {
    console.log(data);
  }
}

// 示例数据
var nestedData = {
  name: 'John',
  age: 30,
  address: {
    street: '123 Main St',
    city: 'New York',
    country: 'USA'
  },
  hobbies: ['reading', 'music', 'sports']
};

// 调用遍历函数
traverseData(nestedData);

name: John
age: 30
street: 123 Main St
city: New York
country: USA
0: reading
1: music
2: sports