Explore topic-wise InterviewSolutions in .

This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.

1.

Why browser not able to read JSX?

Answer»

Why BROWSER not able to read JSX?
As all of us KNOWS that browser can only read javascript objects and JSX nota REGULAR JavaScript object. So to enable browser to understand JSX we need to do some transformation in JSX FILE and create Javascript object by using the JSX transformers LIKE babel and then pass this to browser.

2.

Can you define jsx with example?

Answer»

Can you define jsx with example?
JSX is one of the shorthand for javascript XML and its a type of FILE which is USED by react. And this file will use the expressiveness of JavaScript along with HTML like template syntax. And this will makes HTML file QUITE easy to UNDERSTAND. And this makes APPLICATIONS very robust and also helps to boosts the performance. Below is the one of the example with syntax:-

3.

What do you think about Babel in React?

Answer»

What do you think about Babel in REACT?
CHOOSE the CORRECT option from below list
(1)Babel is a transpiler
(2)Babel is an interpreter
(3)Babel is a compiler
(4)Babel is both a compiler and a transpiler

Answer:-(4)Babel is both a compiler and a transpiler

4.

Short definition of Reconciliation process in React?

Answer»

Short definition of RECONCILIATION process in REACT?
Choose the correct option from below list
(1)The Reconciliation process is a process through which React deletes the DOM.
(2)The Reconciliation process is a process through which React updates and deletes the component.
(3)The Reconciliation process is a process through which React updates the DOM.
(4)It is a process to set the state.

Answer:-(3)The Reconciliation process is a process through which React updates the DOM.

5.

What are the 3 main features of React

Answer»

What are the 3 main features of React
Below are the 3 major or view can say MAINE FEATURE of React
(1)React uses virtual DOM instead of real DOM.
(2)React will use server-side RENDERING.
(3)React will generally use uni-directional DATA flow or we can say uni-directional data binding.

6.

In React arbitrary inputs of components is called?

Answer»

In React ARBITRARY INPUTS of components is CALLED?
Choose the correct option from below list
(1)Keys
(2)Ref
(3)Props
4)Elements

Answer:-(3)Props

7.

Which below technique is used to pass data to a component from outside React applications?

Answer»

Which below technique is USED to PASS DATA to a component from outside React applications?
Choose the CORRECT option from below list
(1)setState
(2)render with arguments
(3)props
(4)PropTypes

Answer:-(3)props

8.

Which below function is used to render React content on an HTML page?

Answer»

Which below FUNCTION is used to render React content on an HTML page?
Choose the correct option from below list
(1)React.mount()
(2)React.start()
(3)React.render()

ANSWER:-(3)React.render()

9.

Basic definition for React?

Answer»

Basic definition for React?
Below are the some SILENT features that will helps you to UNDERSTAND what React is.
(1)React is front end JavaScript library which devloped by Facebook in YEAR(2011).
(2)React is basically component based approach which helps in BUILDING reusable UI components.
(3)React is used for developing complex and interactive web and mobile UI.
(4)React is open source in 2015 and now it has been a largest communities supporting it.

10.

Write down the four main difference between HTML and React event handling?

Answer» WRITE down the four main difference between HTML and React event HANDLING?
Below are the four main difference between HTML and React event handling
(1)HTML:-HTML is generaly uses Lowercase.
(1)React:-React is generaly uses CamelCase.

(2)HTML:-In HTML we generaly we return false to prevent default BEHAVIOR. Below is the syntax for the same


HTML Prevent
(2)React:-In React we need to call preventDefault explicitly.


React Prevent
(3)HTML:-In HTML to understand the lowercase we have given a example. Herer we use onclick in lowercase.


HTML Click
(3)React:-In React we use camelCase and below is the example to understand this. Here we passed the function reference inside CURLY braces.


React CLick
(4)HTML:-In HTML we need INVOKE the function by appending().
(4)React:-In React we should not append()
11.

Sevent most common difference between ReactJS and React Native

Answer»

Sevent most common DIFFERENCE between REACTJS and REACT Native
Below are the seven MAIN difference between ReactJS and React Native



ReactJS and Native

12.

Method to create components in ReactJS and its ways and its syntax?

Answer»

Method to create components in ReactJS and its ways and its syntax?
There are mainly two possible ways to create ReactJS components.
(1)FUNCTIONAL Components:-It is the most SIMPLEST WAY to create components in ReactJS. And this will accepts props as an OBJECT and this will returns ReactsJS elements. These are pure Javascript functions.


Functional Components
(2)Class Components:-Here we can use ES6 class to DEFINE component. And below is the code for the same.


Class Components

13.

How can we implement localStorage in React with methods?

Answer»

How can we implement localStorage in React with methods? When we say about localStorage in react this we will provides access to BROWSER storage objects. And below are the methods which helps on this:- (1)setItem():-We use this method to ADD key VALUE to the localstorage. (2)getItem():-We use this method to GET an item from localstorage by using key. (3)removeItem():-We use this technique to delete an itme from localStorage based on its key. (4)clear():-We use this technique to delete all instance of localStorage. (5)key():-Here we supply a number and it aids in the retrieval of a localStorage key.

14.

Write down difference between React and Angular?

Answer» WRITE down DIFFERENCE between REACT and ANGULAR? Below are the some of the most IMPORTANT difference between React and Angular:-