Write File

Initialize the project in the normal way

>npm init

Create Output Directory

Create project sub-directory "out".

out\

Code

Type in the code shown.

Note the callback function.

Save the code as file "write-file.js".

Keywords:

require
callback function

//write-file.js

const
	fs = require('fs'),
	path = 'out/output.txt',
	content = 'line 1\nline 2',
	prn = (o) => console.log(o.toString());
	
const callbackFct = (err) => {
	if (err) throw err;
	prn('File written successfully');
}

fs.writeFile(path, content, callbackFct);

Run

Run the program in the normal way.

The file "out/output.txt" should have two lines of text.

>node write-file