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Sample Questions & Answers
What is the difference between let and const in JavaScript?
let allows you to reassign values, while const is for constants that cannot be reassigned after declaration.
Why is my React component not re-rendering?
Common causes: not updating state correctly, mutating state directly, or not depending on the right props in useEffect.
How do I center a div in CSS?
The modern way: use Flexbox with justify-content: center and align-items: center on the parent container.