Reading files synchronously in Node.js - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the module needed to read files synchronously.

Node.js

const fs = require('[1]');

Drag options to blanks, or click blank then click option'

Afs

Bhttp

Cpath

Dos

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'http' or 'os' modules which are unrelated to file reading.

Forgetting to import any module.

The fs module is used to work with the file system, including reading files synchronously.

2fill in blank

medium

Complete the code to read the file 'example.txt' synchronously.

Node.js

const data = fs.[1]('example.txt', 'utf8');

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AreadFileSync

BreadFile

Cread

DopenSync

Attempts:

3 left

💡 Hint

Common Mistakes

Using readFile which is asynchronous and requires a callback.

Using openSync which opens a file descriptor but does not read content.

The readFileSync method reads files synchronously and returns the content.

3fill in blank

hard

Fix the error in the code to correctly read a file synchronously.

Node.js

const content = fs.readFileSync('data.txt', '[1]');

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Abinary

Butf8

Cascii

Dutf-16

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong encoding causing unreadable output.

Omitting encoding leading to a Buffer object instead of string.

The encoding utf8 is the standard text encoding to read files as strings in Node.js.

4fill in blank

hard

Fill both blanks to read 'notes.txt' synchronously and store the content in a variable.

Node.js

const [1] = fs.[2]('notes.txt', 'utf8');

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Anotes

BreadFile

CreadFileSync

Dcontent

Attempts:

3 left

💡 Hint

Common Mistakes

Using asynchronous readFile method.

Using unclear variable names like 'content' without context.

We store the file content in a variable named notes and use readFileSync to read synchronously.

5fill in blank

hard

Fill all three blanks to read 'config.json' synchronously and parse it as JSON.

Node.js

const rawData = fs.[1]('config.json', '[2]');
const config = JSON.[3](rawData);

Drag options to blanks, or click blank then click option'

AreadFileSync

Butf8

Cparse

DreadFile

Attempts:

3 left

💡 Hint

Common Mistakes

Using asynchronous readFile instead of synchronous.

Forgetting to specify encoding, resulting in a Buffer.

Not parsing JSON string, leaving it as raw text.

We read the file synchronously with readFileSync, specify encoding utf8, then parse the JSON string with JSON.parse.