没有settimeout，我怎么能做到这一点呢？

function delay(ms) {
  return new Promise(resolve => setTimeout(resolve, ms));
}

async function delayedFunction() {
  console.log('开始执行');
  await delay(2000); // 延迟2秒
  console.log('延迟后执行');
}

delayedFunction();

function delayedFunction() {
  console.log('开始执行');
  const intervalId = setInterval(() => {
    console.log('延迟后执行');
    clearInterval(intervalId); // 清除定时器
  }, 2000); // 延迟2秒
}

delayedFunction();

function delayedFunction() {
  console.log('开始执行');
  requestAnimationFrame(() => {
    setTimeout(() => {
      console.log('延迟后执行');
    }, 2000); // 延迟2秒
  });
}

delayedFunction();

function delay(ms) {
  return new Promise(resolve => setTimeout(resolve, ms));
}

function delayedFunction() {
  console.log('开始执行');
  delay(2000).then(() => {
    console.log('延迟后执行');
  });
}

delayedFunction();