How to append to a file in Node?
// Asynchronously:
const fs = require('fs');
fs.appendFile('message.txt', 'data to append', function (err) {
if (err) throw err;
console.log('Saved!');
});
// Synchronously:
const fs = require('fs');
fs.appendFileSync('message.txt', 'data to append');writefile in node js
// write_stream.js
const fs = require('fs');
let writeStream = fs.createWriteStream('secret.txt');
// write some data with a base64 encoding
writeStream.write('aef35ghhjdk74hja83ksnfjk888sfsf', 'base64');
// the finish event is emitted when all data has been flushed from the stream
writeStream.on('finish', () => {
console.log('wrote all data to file');
});
// close the stream
writeStream.end();Copyright © 2021 Codeinu
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