for循環中使用async/await

async function printFiles () {
  const files = await getFilePaths();

  await Promise.all(files.map(async (file) => {
    //耗時操做
    const contents = await fs.readFile(file, 'utf8')
    console.log(contents)
  }));
}

 以上是併發操做，若是不想併發，使用for循環作：

async function dbFuc(db) {
  let docs = [{}, {}, {}];

  for (let doc of docs) {
    await db.post(doc);
  }
}

 

詳見：https://stackoverflow.com/questions/37576685/using-async-await-with-a-foreach-loop

　　　http://www.ruanyifeng.com/blog/2015/05/async.html