async function fn1() {

  try {

    return 'ok';

  } catch(e) {

    return 'fail';

  }

}

​

async function fn2() {

  let result = false;

  try {

    result = true;

  } catch(e) {

    result = false;

  }

  return result;

}

​

async function fn3() {

  let result = false;

  try {

    throw 'error';

  } catch(e) {

    result = false;

  }

  return result;

}

​

​

​

(async () => {

​

  let a = await fn1();

  let b = await fn2();

  let c = await fn3();

  console.log(`fn1：${a}`);

  console.log(`fn2：${b}`);

  console.log(`fn3：${c}`);

})();

​

​