Question 1

Why does a component re-render, and how do you stop unnecessary ones?

Accepted Answer

Every company's React interview digs into THEIR patterns — their state, their rendering, their framework flavor. Prep for the one that's interviewing you.

Question 2

useEffect runs twice in development — why, and does it matter?

Accepted Answer

Every company's React interview digs into THEIR patterns — their state, their rendering, their framework flavor. Prep for the one that's interviewing you.

Question 3

When do you reach for Context vs a state library vs server state?

Accepted Answer

Every company's React interview digs into THEIR patterns — their state, their rendering, their framework flavor. Prep for the one that's interviewing you.

Question 4

Explain the difference between server and client components in Next.js.

Accepted Answer

Every company's React interview digs into THEIR patterns — their state, their rendering, their framework flavor. Prep for the one that's interviewing you.

Question 5

Tell me about the hardest React bug you've fixed. How did you find it?

Accepted Answer

Every company's React interview digs into THEIR patterns — their state, their rendering, their framework flavor. Prep for the one that's interviewing you.

Question 6

How do you make a large list render fast?

Accepted Answer

Every company's React interview digs into THEIR patterns — their state, their rendering, their framework flavor. Prep for the one that's interviewing you.

React interview questions — answered from your CV