无法将异步函数的结果保存到对象

function asyncFunction(callback) {
  // 异步操作
  setTimeout(() => {
    const result = '异步函数的结果';
    callback(result);
  }, 1000);
}

const obj = {};

asyncFunction((result) => {
  obj.result = result;
  console.log(obj);
});

function asyncFunction() {
  return new Promise((resolve, reject) => {
    // 异步操作
    setTimeout(() => {
      const result = '异步函数的结果';
      resolve(result);
    }, 1000);
  });
}

const obj = {};

asyncFunction()
  .then((result) => {
    obj.result = result;
    console.log(obj);
  })
  .catch((error) => {
    console.error(error);
  });

function asyncFunction() {
  return new Promise((resolve, reject) => {
    // 异步操作
    setTimeout(() => {
      const result = '异步函数的结果';
      resolve(result);
    }, 1000);
  });
}

async function main() {
  const obj = {};
  try {
    const result = await asyncFunction();
    obj.result = result;
    console.log(obj);
  } catch (error) {
    console.error(error);
  }
}

main();