Front End Developer Interview Questions and Answers
Front end interviews test HTML, CSS, JavaScript and usually one framework such as React. Here are common questions with short answers.
Get the full eBook · ₹199Sample questions and answers
What is the difference between var, let and const?
var is function scoped and can be redeclared. let and const are block scoped, and const cannot be reassigned after it is set.
What is the CSS box model?
Every element is a box made of content, padding, border and margin. Understanding it helps you control spacing and sizing.
What is the virtual DOM in React?
It is a lightweight copy of the page structure kept in memory. React compares changes against it and updates only the parts of the real DOM that changed.
What is inside the full eBook
The free answers above are only a small sample.
Frequently asked questions
What do front end interviews usually test?
HTML, CSS and JavaScript fundamentals, a framework such as React, responsive design, browser basics and often a small live coding task.
How can a fresher prepare for a front end interview?
Build a few small projects, revise JavaScript concepts such as closures and async code, and practise explaining your own projects clearly.
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