FullStack with JS Quiz

Test your full-stack JavaScript skills with this quiz. Challenge your knowledge of both front-end and back-end JavaScript development.

Question 1

What is Node.js used for?

Creating server-side applications Building web pages Building mobile applications Building APIs

Question 2

Which method is used to create a new file in Node.js?

fs.writeFile fs.createFile fs.createNewFile fs.createStream

Question 3

What is the primary use of Express.js?

Building user interfaces Creating routing paths Connecting to databases Building databases

Question 4

Which HTTP method is used to send data to a server?

POST PUT DELETE GET

Question 5

How do you import a module in Node.js?

import import_module require() module.exports

Question 6

What is the purpose of a callback function in Node.js?

Handling asynchronous code Handling synchronous code Handling synchronous code Handling both synchronous and asynchronous code

Question 7

Which function is used to read files in Node.js?

fs.readFile fs.writeFile path.join() fs.appendFile

Question 8

What is the 'use strict' directive in JavaScript?

'use strict' enforces secure coding practices 'use strict' disables insecure features Enforcing strict mode in JavaScript 'use strict' improves performance

Question 9

Which keyword is used to declare a variable in JavaScript?

var let const final

Question 10

What does 'async' mean in JavaScript?

To define a function To resolve promises To wait for a promise to resolve To create variables

Question 11

Which method is used to convert a string to a number in JavaScript?

parseInt() parseFloat() Stringify() parseNumber()

Question 12

What is the default value of an uninitialized variable in JavaScript?

undefined nan nan undefined or null

Question 13

What is the purpose of the 'require' function in Node.js?

Requiring external modules Loading files from the system Reading from the file system Interacting with the network

Question 14

How do you define a function in JavaScript?

function functionName() {} functionName() import() function () {}

Question 15

What does 'npm' stand for in Node.js?

Node Project Manager Node Package Manager npm install Node Method Package

Question 16

How can you pass arguments to a JavaScript function?

By passing them as parameters By returning them By defining them outside the function Passing them in an object

Question 17

What is a promise in JavaScript?

It represents a future value It is a non-blocking function It is a chaining mechanism It is a delay function

Question 18

Which of these is not a JavaScript framework?

Angular React Vue jQuery

Question 19

How do you create a new project in Node.js?

Using the express command npm start express initialize server create

Question 20

What does 'console.log' do in JavaScript?

Logging to the console console.warn() console.error() console.log() for errors

Question 21

Which of these is an event-driven model?

Event-driven programming Asynchronous programming Declarative programming Procedural programming

Question 22

What is the purpose of middleware in Express.js?

To process incoming requests To send JSON responses For handling errors For routing requests

Question 23

What is the 'callback hell' problem in Node.js?

Nested callbacks Using promises Callback functions Nested functions

Question 24

Which module is used for handling file paths in Node.js?

path module callback-utils path-resolve path-builder

Question 25

What is the 'require' keyword used for in Node.js?

To load external files and modules To organize code To load external libraries To load external files

Question 26

How can you prevent a JavaScript event from bubbling?

preventDefault() event.stopPropagation() return() stopPropagation()

Question 27

Which method is used to create a server in Express.js?

app.listen() app.get() express() app.use()

Question 28

What is the purpose of the 'res.send' method in Express.js?

Sending a response to the client Sending a response Sending an error response Returning an object

Question 29

How can you handle errors in Node.js?

Using try-catch blocks Using callbacks Using async functions Using callbacks with promises

Question 30

What is the difference between 'let' and 'const' in JavaScript?

They are both used to declare variables Both are block-scoped They have different scope rules They differ in mutability