Any web development job interview consists of both backend and front-end interview questions. Although the role of front-end developers is always underplayed, they play a crucial role in web development.

It’s the job of the front-end developer to build a user interface that facilitates the visitor-website (or web app) interaction. Earlier front-end development was just about HTML, CSS, and JavaScript, but now we have a myriad of front-end libraries, frameworks, and other UI tools too.

Front End Interview Questions blog is widely categorized in the following three types:

• Basic
• Intermediate
• Advanced

Basic Front End Interview Questions

1. What does DOCTYPE stand for, and what does it do?

2. What is the difference between null and undefined?

3. What is Lazy Loading?

4. What is Coercion in JS?

5. What is the use of meta tags in HTML documents?

Intermediate Front End Interview Questions

6. What is IIFE?

7.. What are the callback functions in JS?

8. What is React.js?

9. Why it is encouraged to use external JS and CSS over in-line?