Interview Preparation

Real interview questions from top tech companies with detailed answers

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What is JavaScript and what are its key features?...

What is the difference between var, let, and const?...

What is a closure in JavaScript?...

Explain Promises and async/await in JavaScript...

What is React and what are its key features?...

What is the difference between state and props in React?...

What are React Hooks and why were they introduced?...

Explain the Virtual DOM and how React uses it...