js promise等到解析后继续"main“

function fetchData() {
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      const data = { message: 'Hello, World!' };
      resolve(data);
    }, 2000);
  });
}

fetchData()
  .then(data => {
    console.log(data.message); // 输出: Hello, World!
    return data; // 继续链式调用
  })
  .then(data => {
    console.log('继续处理数据:', data);
  })
  .catch(error => {
    console.error('发生错误:', error);
  });

function fetchData() {
  return new Promise((resolve, reject) => {
    // 模拟异步操作
    setTimeout(() => {
      try {
        const data = { message: 'Hello, World!' };
        resolve(data);
      } catch (error) {
        reject(error);
      }
    }, 2000);
  });
}

fetchData()
  .then(data => {
    console.log(data.message);
  })
  .catch(error => {
    console.error('发生错误:', error);
  });