Page 128 - Nodejs 교과서 개정2판

௒ߔ ૑ৠ਷ Promiseա async awaitਵ۽ যו ੿ب ೧Ѿೡ ࣻ ੓णפ׮

asyncOrderPromise.js

const fs = require('fs').promises;

console.log('시작');
fs.readFile('./readme2.txt')
.then((data) => {
console.log('1번', data.toString());
return fs.readFile('./readme2.txt');
})
.then((data) => {
console.log('2번', data.toString());
return fs.readFile('./readme2.txt');
})
.then((data) => {
console.log('3번', data.toString());
console.log('끝');
})
.catch((err) => {
console.error(err);
});

प೯ Ѿҗח BTZOD0SEFS KT৬ эणפ׮

૑Әө૑ زӝ ݫࢲ٘৬ ࠺زӝ ݫࢲ٘੄ ର੉ܳ ঌইࠌणפ׮ ੉ઁ readFileҗ readFileSyncীࢲ ߉ইৡ dat

aܳ data.toString()ਵ۽ ߸ജೞח ੉ਬܳ ঌইࠅ ର۹ੑפ׮ Ѿۿࠗఠ ݈ೞ੗ݶ toString ݫࢲ٘ܳ ࢎਊೞ

ח ੉ਬח dataо ߡಌ੉ӝ ٸޙੑפ׮ ߡಌо ޖ঺ੋ૑ ঌইࠇद׮

ߡಌ৬ झ౟ܿ ੉೧ೞӝ
౵ੌਸ ੍Ѣա ॳח ߑधীח ௼ѱ ف о૑ ߑध ૊ ߡಌܳ ੉ਊೞח ߑधҗ झ౟ܿਸ ੉ਊೞח ߑध੉ ੓णפ

׮ ߡಌ݂җ झ౟ܻ߁੉ۄח ਊযܳ ٜযࠄ ੸੉ ੓աਃ ই݃ ੋఠ֔ਵ۽ ৔࢚ਸ द୒ೡ ٸ ف ਊযܳ ࠄ ੸੉
੓ਸ ѩפ׮ ৔࢚ਸ ۽٬ೡ ٸח ߡಌ݂ೠ׮Ҋ ೞҊ ৔࢚ਸ पदрਵ۽ ࣠୹ೡ ٸח झ౟ܻ߁ೠ׮Ҋ ೤פ׮

ߡಌ݂਷ ৔࢚ਸ ੤ࢤೡ ࣻ ੓ਸ ٸө૑ ؘ੉ఠܳ ݽਵח ز੘੉Ҋ झ౟ܻ߁਷ ߑ࣠ੋ੄ ஹೊఠীࢲ द୒੗੄
ஹೊఠ۽ ৔࢚ ؘ੉ఠܳ ઑӘঀ ੹࣠ೞח ز੘ੑפ׮ झ౟ܻ߁ೞח җ੿ীࢲ ߡಌ݂ਸ ೡ ࣻب ੓णפ׮ ੹࣠

੉ ցޖ וܻݶ ചݶਸ ղࠁղӝө૑ ୭ࣗೠ੄ ؘ੉ఠܳ ݽইঠ ೞҊ ৔࢚ ؘ੉ఠо ੤ࢤ ࣘبࠁ׮ ࡅܰѱ ੹࣠
غযب ޷ܻ ੹࣠߉਷ ؘ੉ఠܳ ੷੢ೡ ҕр੉ ೙ਃೞӝ ٸޙੑפ׮

֢٘੄ ߡಌ৬ झ౟ܿب ࠺तೠ ѐ֛ੑפ׮ খীࢲ readFile ݫࢲ٘ܳ ࢎਊೡ ٸ ੍঻؍ ౵ੌ੉ ߡಌ ഋधਵ۽