Node.js Async/Await简单的示例

const axios = require('axios'); 

function getCoffee() {
  return new Promise(resolve => {
    setTimeout(() => resolve('☕'), 2000); // 延时2秒
  });
}

async function go() {
        try {

            const coffee = await getCoffee();
            console.log(coffee); // ☕
            // 异步请求
            const wes = await axios('https://api.github.com/users/wesbos');
            console.log(wes.data); 
            //
            //并发三个请求
            const wordPromise = axios('http://www.setgetgo.com/randomword/get.php');
            const userPromise = axios('https://randomuser.me/api/');
            const namePromise = axios('https://uinames.com/api/');
            // 等所有的promise完成
            const [word, user, name] = await Promise.all([wordPromise, userPromise, namePromise]);
            console.log(word.data, user.data, name.data); // cool, {...}, {....}
        } catch (e) {
            console.error(e); // ?
        }
}

go();