JavaScript 核心觀念(80) - ES6 章節：Async/Await - Async Function 與 Promise 之間的關聯性

function promiseFn (boolean) {
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      if(boolean) {
        resolve('resolve');
      } else {
        reject('reject')
      }
    }, 1000)
  })
}

const asyncFn = async () => {
  try {
    const res1 = await promiseFn(true);
  } catch(error) {
    console.log('error', error);
  }
}

const asyncFn = async () => {
  try {
    const res = await promiseFn(true);
    return res;
  } catch(error) {
    console.log('error', error);
  }
}
asyncFn()
  .then((res) => {
    console.log(res); // resolve
  })