filesystem js write code example
Example 1: writefile in node js
// writefile.js
const fs = require('fs');
let lyrics = 'But still I\'m having memories of high speeds when the cops crashed\n' +
'As I laugh, pushin the gas while my Glocks blast\n' +
'We was young and we was dumb but we had heart';
// write to a new file named 2pac.txt
fs.writeFile('2pac.txt', lyrics, (err) => {
// throws an error, you could also catch it here
if (err) throw err;
// success case, the file was saved
console.log('Lyric saved!');
});
Example 2: writeFileSync
var fs = require('fs');
// Save the string "Hello world!" in a file called "hello.txt" in
// the directory "/tmp" using the default encoding (utf8).
// This operation will be completed in background and the callback
// will be called when it is either done or failed.
fs.writeFile('/tmp/hello.txt', 'Hello world!', function(err) {
// If an error occurred, show it and return
if(err) return console.error(err);
// Successfully wrote to the file!
});
// Save binary data to a file called "binary.txt" in the current
// directory. Again, the operation will be completed in background.
var buffer = new Buffer([ 0x48, 0x65, 0x6c, 0x6c, 0x6f ]);
fs.writeFile('binary.txt', buffer, function(err) {
// If an error occurred, show it and return
if(err) return console.error(err);
// Successfully wrote binary contents to the file!
});