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React JS - Evaluate yourself

A visually engaging illustration representing React JS concepts, including components, state, props, and a computer screen showing code, vibrant colors, modern style.

React JS Self-Evaluation Quiz

Test your knowledge of React JS with our comprehensive self-evaluation quiz! This quiz is designed for developers of all skill levels to assess their understanding of core concepts and key components of the React framework.

Key Features:

Multiple choice and checkbox questions
Covers fundamental topics in React
Score yourself and identify areas for improvement

15 Questions4 MinutesCreated by CodingWizard42

Which method in a React Component should you override to stop the component from updating?

WillComponentUpdate

ShouldComponentUpdate

ComponentDidUpdate

ComponentDidMount

What's used to pass data to a component from outside?

SetState

Render with arguments

PropTypes

Props

Which method in a React Component is called after the component is rendered for the first time?

ComponentDidUpdate

ComponentDidMount

ComponentMounted

ComponentUpdated

ReactJS focuses on which of the following part when considering MVC?

M (Model)

V (View)

C (Controller)

Everything in React is a

Module

Component

Package

Class

In which directory React Components are saved?

Inside js/components/

Inside vendor/components/

Inside external/components/

Inside vendor/

How many elements does a react component return?

2 Elements

1 Element

Multiple Elements

3 Elements

What is Babel?

A transpiler.

An interpreter

A Compiler

Both Compiler and Transpilar

What does the "webpack" command do?

Transpiles all the Javascript down into one file

Runs react local development server.

A module bundler

A Compnent

What is ReactJS?

Server side Framework

User-interface framework

A Library for building interaction interfaces

Client side Framework

What are the two ways that data gets handled in React?

Services & components

State & props

Class & Object

Query & Binary

What port is the default where the webpack-dev-server will run?

3000

8080

3306

9090

What is state in React?

A persistant storage.

An internal data store (object) of a component.

Which of the following concepts is/are key to ReactJS?

Component-oriented design

Event delegation model

Object Oriented Model

None

Which of the following API is a MUST for every ReactJS component?

GetInitialState

Render

RenderComponent

RenderClass

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