Top 10 Interview Questions for Junior Web Developers (With Answers)

Landing your first web development job can feel both exciting and overwhelming. Employers often look for freshers who not only understand coding but can also think logically, solve problems, and communicate effectively. If you are a student or graduate of a web development course in Kolkata, preparing for interviews the right way can boost your confidence and increase your chances of success.

In this blog, we’ll cover the top 10 most commonly asked interview questions for junior web developers along with practical answers. Whether you are just starting your career or switching fields, these tips will help you stand out in interviews.

1. Can You Explain the Difference Between HTML, CSS, and JavaScript?

Why it’s asked: Employers want to ensure you understand the building blocks of web development.

Sample Answer:

• HTML (HyperText Markup Language): It provides the structure of a webpage.

• CSS (Cascading Style Sheets): It handles the design, layout, and styling.

• JavaScript: It adds interactivity and dynamic behaviour to the site.

Example: HTML builds the house, CSS paints and decorates it, and JavaScript makes the doors open automatically.

2. What Is Responsive Web Design?

Why it’s asked: With mobile-first development being essential, you need to know this.

Sample Answer:

Responsive Web Design ensures that a website looks good and functions well on devices of all sizes—from desktops to smartphones. Developers achieve this through flexible grids, fluid images, and media queries in CSS.

3. What Are the Differences Between Front-End and Back-End Development?

Sample Answer:

• Front-End: Everything users see and interact with—HTML, CSS, and JavaScript.

• Back-End: Server-side operations like databases, APIs, and authentication (using languages like PHP, Node.js, or Python).

A good junior developer should know enough to collaborate with both sides.

4. How Do You Optimise a Website’s Performance?

Sample Answer:

Some common techniques include:

• Compressing images

• Using browser caching

• Minimizing CSS and JavaScript files

• Reducing HTTP requests

• Implementing lazy loading for images

These steps make websites faster and improve user experience.

5. What Is Version Control, and Why Is Git Popular?

Sample Answer:

Version control tracks code changes and helps developers collaborate without conflicts. Git is popular because it’s fast, open-source, and widely supported. Platforms like GitHub make team collaboration seamless.

6. Can You Explain the Difference Between == and === in JavaScript?

Sample Answer:

• == compares values but not data types (loose equality).

• === compares both values and data types (strict equality).

Example: 5 == "5" is true, but 5 === "5" is false.

7. What Are APIs, and Why Are They Useful?

Sample Answer:

APIs (Application Programming Interfaces) allow communication between different software applications. For example, integrating Google Maps into a website is possible through its API.

8. What Is the Difference Between id and class in HTML/CSS?

Sample Answer:

• id: A unique identifier for a single element.

• class: Can be applied to multiple elements for shared styling.

Example: Use 'id' for a navigation bar, but 'class' for multiple buttons.

9. What Is a Framework, and Can You Name Some?

Sample Answer:

• A framework provides pre-written code and tools that speed up development. Examples include:

• Front-End: React, Angular, Vue.js

• Back-End: Laravel (PHP), Django (Python), Express.js (Node.js)

10. Tell Us About a Project You’ve Worked On.

Why it’s asked: Employers want to see your practical skills and creativity.

Tips for Answering:

• Briefly describe the project (e.g., a portfolio website, e-commerce site).

• Mention the technologies you used.

• Highlight a problem you solved and how.

Example: “I built a responsive portfolio website using HTML, CSS, and JavaScript. One challenge was making it mobile-friendly, so I applied media queries and flexbox to optimise the layout.”

Pro Tips to Crack Junior Web Developer Interviews

• Practice coding regularly on platforms like HackerRank or CodePen.

• Build real projects to show in your portfolio.

• Keep updating your GitHub with code samples.

• Stay curious—read blogs, join communities, and learn new frameworks.

Why Choose The Institute of Career Excellence (TICE)?

If you are looking for the best web development course in Kolkata, The Institute of Career Excellence (TICE) is your ideal choice. Here’s why:

• Industry-Aligned Curriculum: Learn HTML, CSS, JavaScript, React, PHP, and more.

• Hands-On Projects: Work on real-world assignments to build your portfolio.

• Expert Trainers: Get guidance from industry professionals with years of experience.

• Placement Assistance: TICE has strong industry collaborations to support your job search.

• Career Counselling: Personalised mentoring ensures you stay on track.

• Many TICE alumni have successfully started their careers in reputed IT companies right after completing the course.

Conclusion

Landing your first web development job can feel both exciting and overwhelming. Employers often look for freshers who not only understand coding but can also think logically, solve problems, and communicate effectively. If you are a student or graduate of a web development course in Kolkata, preparing for interviews the right way can boost your confidence and increase your chances of success.