🚀 Frontend Stack Quiz

FRONTEND - INTERMEDIATE Level

Question 1 of 5

What is the virtual DOM in React?

A copy of the real DOM stored in memory
A new HTML specification
A browser API
A CSS framework

Explanation: The virtual DOM is React's representation of the real DOM kept in memory and synced with the real DOM through reconciliation.

Question 2 of 5

Which CSS methodology follows the Block, Element, Modifier naming convention?

SMACSS
BEM
OOCSS
ITCSS

Explanation: BEM (Block, Element, Modifier) is a CSS naming methodology that helps create reusable components.

Question 3 of 5

What is the purpose of webpack in modern frontend development?

Database management
Module bundling and build automation
Server-side rendering
API testing

Explanation: Webpack is a module bundler that processes and bundles JavaScript files and other assets for web applications.

Question 4 of 5

In JavaScript, what does 'hoisting' refer to?

Moving variables to the top of their scope during compilation
Lifting heavy objects
Increasing performance
Creating new functions

Explanation: Hoisting is JavaScript's behavior of moving variable and function declarations to the top of their containing scope during compilation.

Question 5 of 5

What is the difference between '==' and '===' in JavaScript?

No difference
=== checks type and value, == only checks value
== is faster than ===
=== is deprecated

Explanation: === (strict equality) checks both type and value, while == (loose equality) performs type coercion before comparison.

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