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');javascript write to file
<script>
// Requiring fs module in which
// writeFile function is defined.
const fs = require('fs')
// Data which will write in a file.
let data = "Learning how to write in a file."
// Write data in 'Output.txt' .
fs.writeFile('Output.txt', data, (err) => {
// In case of a error throw err.
if (err) throw err;
})
</script>Copyright © 2021 Codeinu
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