React JS QUIZ

Which of the following command is used to create react-js-app ?

• npx create-react-app appname
• npm install create-react-app
• npx install create-react-app -g
• install - l create-react-app

In React.js which one of the following is used to create a class for Inheritance ?

• Create
• Extends
• Inherits
• Delete

What is the default port where a create-react-app project runs?

• 3000
• 8080
• 5000
• 8000

Which of the following valid component return type of React ?

• 2
• 5
• 1
• 3

Which of the following is a way to handle data in React.js ?

• State & Props
• Services & Components
• State & Services
• State & Component

Which of the following is must for the API in React.js ?

• SetinitialComponent
• renderComponent
• render
• All of the above

In React.js, how we can pass the data from one component to another in React.js ?

• SetState
• Render with arguments
• Props
• PropTypes

Which of the following function is true about changing the state in React.js ?

• this.State{}
• this.setState
• this.setChangeState
• All of the above

Which of the following method is true about referring parent class in React.js ?

• self()
• inherits()
• this()
• super()

Which of the following is used to render components in web pages ?

• DOM_render()
• render()
• ReactDOM_render()
• transfer()