How do I use the file system module in Node.js?

How do I use the file system module in Node.js?

The file system module in Node.js allows you to interact with the file system on your computer. You can read, write, and manipulate files and directories. Would you like to see some examples?

Yes, please show me how to read a file.

To read a file, you can use the fs.readFile method. Here's a simple example:

const fs = require('fs');

fs.readFile('example.txt', 'utf8', (err, data) => {
    if (err) {
        console.error(err);
        return;
    }
    console.log(data);
});

This will read the contents of 'example.txt' and log it to the console.

What if I want to write to a file instead?

You can use the fs.writeFile method to write to a file. Here's an example:

const fs = require('fs');

fs.writeFile('output.txt', 'Hello, World!', (err) => {
    if (err) {
        console.error(err);
        return;
    }
    console.log('File has been written!');
});

This will create 'output.txt' and write 'Hello, World!' to it.