React JS Quiz - React JS Interview Questions

Post Link : https://www.skptricks.com/2018/07/react-js-quiz-react-js-interview.html

Today we are going to provide basic react js interview question with answer, This quiz series helps to build more understanding on reactjs and java script library for building user interfaces.

1. We can go for keys when there is possibility that our user could change the data.
   Keys
   ref
   both
   none of above

2. JSX is typesafe.
   True
   False

3. React merges the object you provide into the current state using __________.
   setState()
   State()

4. Arbitrary inputs of components are called __________.
   Keys
   Props
   Elements
   Ref

5. _________ can be done while more than one element needs to be returned from a component.
   Abstraction
   Packing
   Insulation
   Wrapping

6. Which of the following needs to be updated to achieve dynamic UI updates?
   State
   Props

7. Lifecycle methods are mainly used ___________.
   To keep track of event history
   to enhance components
   freeup resources
   none of the options

click to check out solution

Comments

[Francisco M. Delgado]

The solution isn't an underscore on the first question.

[Nikhil-devloper]

The first question needs to update.