Previous article has been introduced, usepromiseThe way of reading files, greatly reduces the useTune hellDifficulties.

BelowasyncandawaitCombined with the read file instance, you can achieve the same effect:

// 1. Introduced FS module
const fs = require("fs");

 // Read "to learn"
function readWeiXue() {
    return new Promise((resolve, reject) => {
                 fs.readfile ("./ resources / for learning .md", (err, data) => {
                         // If you fail
            if (err) reject(err);
                         // If successful
            resolve(data);
        })
    })
}

function readChaYangShi() {
    return new Promise((resolve, reject) => {
                 fs.readfile ("./ resources /     .md", (err, data) => {
                         // If you fail
            if (err) reject(err);
                         // If successful
            resolve(data);
        })
    })
}

function readGuanShu() {
    return new Promise((resolve, reject) => {
                 fs.readfile ("./ Resources / View. MD", (Err, DATA) => {
                         // If you fail
            if (err) reject(err);
                         // If successful
            resolve(data);
        })
    })
}

 // Declare an ASYNC function
async function main(){
         // Get it for learning content
    let weixue = await readWeiXue();
         / / Get the content of the transplant
    let chayang = await readChaYangShi();
         / / Get a sense of reading
    let guanshu = await readGuanShu();

    console.log(weixue.toString());
    console.log(chayang.toString());
    console.log(guanshu.toString());
}

main();

readWeiXue()andreadChaYangShi()andreadGuanShu()All returned onepromiseObject;

awaitBe followed by one backpromiseObject function;