Easy Understand React & Next.js multiple_choice
What is the primary purpose of the key prop when rendering lists in React?
Understand — Tests comprehension and ability to explain concepts.
Answer Options
A Styling individual list items
B Helping React identify which items changed, were added, or removed
C Providing accessible labels for screen readers
D Preventing re-renders of list items
Want to see the correct answer?
Get the answer with a detailed explanation, plus practice 15+ more React & Next.js questions with adaptive quizzes and timed interviews.
See the Answer on Guru Sishya →This question is from the React & Next.js topic (Frontend).
More React & Next.js Questions
What is a React Server Component?
Medium-EasyWhich hook should you use to run code only once when a component mounts?
EasyWhat does 'use client' do in Next.js App Router?
Medium-EasyWhat is the difference between useMemo and useCallback?
MediumWhat does revalidatePath() do in Next.js Server Actions?
Medium-Easy