Reactjs

Test Your ReactJS Knowledge

Welcome to the ReactJS Quiz! This interactive quiz will challenge your understanding of the popular JavaScript library, React. Whether you're a seasoned developer or just starting, this quiz offers an engaging way to evaluate your skills.

Key Features:

11 thought-provoking questions
Covers essential ReactJS concepts
Instant feedback on your performance

11 Questions3 MinutesCreated by CleverCoder202

What is ReactJS?

User-interface framework

Server-side Framework

Both server & Client

What create-react-app command do

Update a react app

Creates new react app

Install dependencies

How many elements does a react component return?

Multiple Elements

What is the HTML like Syntax used in Reactjs Termed as

XHTML

JSX

HTML

Under What conditions a component will re-render

Receive a data from network

State or props change

User trigger an event

None of them

What offers a class based component that a functional component doesn't

Access to state

Access to props

Access to life cycle hooks

Return content which will be rendered

What lifecycle method is the correct spot to cause side-effects like reaching for the network?

ShouldComponentUpdate

ComponentDidMount

Render

ComponentWillReceiveProps

A PureComponent...

Never mutate it's own state

Is not "connected" to redux

Only re-render if props have changed

Doesn't implement any lifecyle method

In a component, what does props.children refers to?

The content between opening and closing tag

The text content

All sub-components invoked in this component

None, children is not a property of props

What new feature allow to write lists without the key attribute?

List

Item

Article

Fragment

Reactjs

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