Page 123 - Nodejs 교과서 개정2판

console.log(data)ܳ ೮؊פ Bufferۄח ੉࢚ೠ Ѫ੉ ୹۱ؾפ׮ Ӓېࢲ EBUBী toString()ਸ ࠢৈࢲ ۽Ӓ

ܳ ନ঻؊פ ઁ؀۽ ޙ੗ৌ੉ ୹۱ؾפ׮ readFile੄ Ѿҗޛ਷ ߡಌ Buffer ۄח ഋधਵ۽ ઁҕؾפ׮ ૑Ә਷
ױࣽ൤ ߡಌܳ ݫݽܻ੄ ؘ੉ఠۄҊ ࢤпೞݶ ؾפ׮ ੺ীࢲ ੗ࣁೞѱ ࢸݺ೤פ׮ ߡಌח ࢎۈ੉ ੍ਸ ࣻ

੓ח ഋध੉ ইפ޲۽ toStringਸ ࢎਊ೧ ޙ੗ৌ۽ ߸ജ೮णפ׮

GTח ӝࠄ੸ਵ۽ ௒ߔ ഋध੄ ݽٕ੉޲۽ पޖীࢲ ࢎਊೞӝо ࠛಞ೤פ׮ ٮۄࢲ GT ݽٕਸ ೐۽޷झ ഋधਵ۽

߄Լ઱ח ߑߨਸ ࢎਊ೤פ׮

readFilePromise.js

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

fs.readFile('./readme.txt')
.then((data) => {
console.log(data);
console.log(data.toString());
})
.catch((err) => {
console.error(err);
});

GT ݽٕীࢲ promise ࣘࢿਸ ࠛ۞য়ݶ ೐۽޷झ ӝ߈੄ GT ݽٕਸ ࢎਊೡ ࣻ ੓ѱ ؾפ׮ খਵ۽ח ೐۽޷झ ӝ
߈੄ GT ݽٕਸ ࢎਊೞѷणפ׮

੉ߣীח ౵ੌਸ ٜ݅যࠁѷणפ׮

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

fs.writeFile('./writeme.txt', '글이 입력됩니다')
.then(() => {
return fs.readFile('./writeme.txt');
})
.then((data) => {
console.log(data.toString());
})
.catch((err) => {
console.error(err);
});

writeFile ݫࢲ٘ী ࢤࢿؼ ౵ੌ੄ ҃۽৬ ղਊਸ ੑ۱೤פ׮ ب઺ী ী۞о ߊࢤೞ૑ ঋও׮ݶ э਷ ಫ؊ ղ
ী writeme txtо ࢤࢿغ঻ਸ Ѫੑפ׮ ૒੽ ৌযࠊب غ૑݅ ౵ੌ दझమਸ ҕࠗೞח ઺੉޲۽ readFile ݫ