Frontend Developer Interview (Fresher)

Top 30+ Frontend Developer Interview Questions for Freshers

If you’re aiming for a front-end role, then practicing these frontend developer interview questions for freshers will help you stand out. Moreover, this guide includes HTML, CSS, JavaScript, browser, and tool-related questions—everything a modern frontend fresher needs. In addition, we split questions into easy, medium, and advanced levels so you can prepare in a structured manner.

Easy Frontend Developer Interview Questions for Freshers

1. What is HTML?

HTML stands for HyperText Markup Language. Developers use it to build and structure web pages by defining elements like headings, paragraphs, and links.

2. What does CSS do?

CSS (Cascading Style Sheets) styles web pages. For example, it lets developers define layout, colors, fonts, and more to enhance user interfaces.

3. What are semantic HTML elements?

Elements like <header>, <article>, and <footer> describe page meaning and improve accessibility and SEO.

4. What is the box model?

The CSS box model includes content, padding, border, and margin. It helps developers control element sizing and space around it.

5. What is responsive design?

Developers use responsive design to ensure websites look good on various devices. They often use CSS media queries to adjust layouts for screen sizes.

6. What is the difference between class and ID selectors?

.class selects multiple elements, while #id selects one unique element per page.

7. What are CSS Flexbox and Grid?

Flexbox and Grid help layout elements in CSS. Flexbox arranges items in a row/column, while Grid creates 2D layouts with rows and columns.

8. What is the purpose of the <script> tag?

Developers use <script> tags to include or embed JavaScript in HTML pages.

9. What is DOM?

The DOM (Document Object Model) represents HTML elements as a structured tree. JavaScript uses it to manipulate content dynamically.

10. What is event handling?

Event handling means responding to user actions like clicks, typing, or mouse movement by using JavaScript functions tied to events.

Medium Frontend Developer Interview Questions for Freshers

11. What is JavaScript, and why does it matter?

JavaScript is a scripting language that runs in browsers to create interactive web experiences. Most dynamic frontend features rely on it.

12. Explain CSS specificity.

Specificity determines which CSS rule applies when multiple rules match. IDs have higher specificity than classes, which rank higher than elements.

13. What are CSS preprocessors?

Tools like Sass or LESS let developers write CSS with features like variables and nesting. Then, they compile it to standard CSS.

14. How do you optimize images for web?

Developers compress images, use formats like WebP, and serve responsive sizes via srcset to reduce load time.

15. What is AJAX?

AJAX (Asynchronous JavaScript and XML) lets pages fetch data behind the scenes to update content without reloading the page.

16. What are JavaScript arrow functions?

Arrow functions offer a shorter syntax and inherit the this value from their context, making them ideal for callbacks.

17. What are ES6 modules?

ES6 modules allow developers to organize code by exporting and importing JavaScript features across files.

18. What is a promise in JavaScript?

A promise represents asynchronous results. Developers chain .then(), .catch(), and .finally() to handle success or failure.

19. What is fetch API?

The Fetch API returns a promise that resolves the response object. Developers use it for making HTTP requests in modern browsers.

20. What is localStorage?

localStorage stores data in the browser across sessions. Developers use it to cache user preferences or application state.

Advanced Interview Questions for Freshers

21. What is accessibility (a11y)?

Accessibility means designing web interfaces that users with disabilities can use. Developers follow guidelines like WCAG and implement ARIA roles.

22. What are progressive web apps (PWAs)?

PWAs combine modern web features to deliver app-like experiences in browsers. Developers add service workers, manifests, and offline caching.

23. How do you ensure cross-browser compatibility?

Developers test in multiple browsers, use polyfills, and write fallback styles or scripts to maintain functionality across platforms.

24. What is the CSS BEM methodology?

BEM (Block Element Modifier) organizes CSS class names to make code modular, predictable, and easy to maintain.

25. What debugging tools do you use?

Developers use browser developer tools, console statements, and breakpoints to debug layout, performance, and scripts.

26. What is lazy loading?

Lazy loading delays loading of images or components until they appear in the viewport. This improves performance and saves bandwidth.

27. What is responsive typography?

Developers use relative units like em or rem and CSS media queries to scale text based on device or viewport size.

28. What is a CSS animation?

CSS animations let developers animate changes in CSS properties using keyframes and timing functions without JavaScript.

29. What is component-based architecture?

Developers build UI using reusable and self-contained components. Frameworks like React, Vue, and Angular bring this pattern to the frontend.

30. What is version control in frontend development?

Developers use tools like Git to track code changes, work collaboratively, and manage releases. It ensures code history and rollback capability.

In conclusion, mastering these frontend developer interview questions for freshers gives you a solid start. Furthermore, practice building small projects to reinforce what you’ve learned and gain interview confidence.