24th
Dec
Dec

React JS MCQ
- Admin
- 24th Dec, 2020
- 489 Followers
Latest MCQ Tests
Pratice HR Questions
React JS Multiple choice interview questions (MCQ) - Test your React JS knowledge
1) To update state in react forcefully, which method is used
2) What does ReactJS use to increase performance?
3) A valid react component can return ...... number of elements.
4) What will happen if you render an input element with disabled = {false}
5) Which of the following API is a MUST for every ReactJS component?
Download Free : React JS MCQ PDF
6) How many stages are there in React js life cycle
7) What does ReactJS cover?
8) In relation to React js component lifecycle, which statement is true
9) The state in react can be updated by call to setState method. These calls are
10) What is a good use case for using a function while rendering a dynamic list of items
Read Best: React JS MCQ
11) Which of the following is a correct definition of state in react?
12) Regarding React js components, which of following statement is true?
13) For uncontrolled components in react
14) ReactJS uses _____ to increase performance
15) Ref in react component is used to assign reference to DOM elements. Ref can be created by
Download Free: React JS MCQ PDF
16) What is the second argument for setState useful for?
17) For controlled components in react
18) How many elements does a react component returns?
19) What are two ways data gets handled in react?
20) Number of elements, a valid react component can return
21) What are the limitations of ReactJS?
22) React is ............ Javascript library
23) React Js is developed by
24) Keys are given to a list of elements in react. These keys should be
25) What is React Js?
26) Everything in react is __________
27) What is the default port for webpack dev server?
28) React is a ________
29) How can you access the state of a component from inside of a member function?
30) In react, this is used to pass data to component from outside?
Leave A Comment :
Valid name is required.
Valid name is required.
Valid email id is required.