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
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?
1
2
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
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