Computer scienceBackendNode.jsCore ConceptsInternal modulesFile system module

Write to file

Manipulating files

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What does this line of code show?

const fs = require('node:fs');

fs.appendFile('message.txt', 'Hey guys!', (err) => {
    if (err) {
        console.log(err);
    }
    fs.appendFile('message.txt', 'How are you doing?', (err) => {
     if (err) {
        console.log(err);
    }
        console.log('Written!');
    })
});

Select one option from the list

'Hey guys!' is written synchronously to the message.txt file, then 'How are you doing? is consoled to our terminal.

Both strings are logged to the console one after another in an asynchronous way.

'Hey guys!' is written asynchronously to the message.txt file, then it's overwritten by the 'How are you doing?' string.

Both strings are written asynchronously one after another to the message.txt file.

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