NeuraQuiz
Categories
Quizzes
Practice
Blog
About
Login
Start Learning
Categories
Quizzes
Practice
Blog
About
Login
Start Learning
React Foundations Quiz
Frontend
15:00
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Question 1
of 20
BEGINNER
+1 XP
Previous
Flag
Submit
Next
Navigator
0/20
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Submit Quiz
BEGINNER
1 pts
What is the role of `key` prop in React when mapping over an array to render components?
A
To specify the component's CSS style
B
To optimize rendering performance by helping React identify unique elements
C
To pass data from a parent to a child component
D
To handle user input events