### async/await 需与Promise配合使用 ~~~ const fs = require('fs') async function f() { let re1 = await new Promise((resolve, reject)=>{ fs.readFile('./data/1.json', (err, data)=>{ if(err) reject(err) resolve(data) }) }) let re2 = await new Promise((resolve, reject)=>{ fs.readFile('./data/1.json', (err, data)=>{ if(err) reject(err) resolve(data) }) }) let re3 = await new Promise((resolve, reject)=>{ fs.readFile('./data/1.json', (err, data)=>{ if(err) reject(err) resolve(data) }) }) console.log(re1.toString(), re2.toString(), re3.toString()) } f() ~~~