React Javascript

Question 1

Which command should be used to start a new React project?

Accepted Answer

npx create-react-app my-app

Answer

npm create-react-app my-app

Answer

npm create-react-app my-app

Question 2

What does the command's reference to "my-app" mean?

npx create-react-app my-app

Accepted Answer

The title that you want to give your new app

Answer

The brand of a current app

Answer

What kind of software you want to develop

Answer

The location where you wish to put your app

Question 3

Which command is used to launch the local development server for React?

Accepted Answer

npm start

Answer

npm run

Answer

npm run dev

Answer

npm build

Question 4

What is the children prop?

Accepted Answer

A property that lets you set an object as a property

Answer

A property that lets you pass data to child components

Answer

A property that lets you nest components in other components

Answer

A property that lets you add child values to state

Question 5

React components must start with a capital letter

Accepted Answer

True

Answer

False

Question 6

When rendering a list using the JavaScript map() method, what is required for each element rendered?

Accepted Answer

Key

Answer

ID

Answer

Data

Answer

Index

Question 7

Which of the following is NOT a rule for React Hooks?

Accepted Answer

Hooks can only be called at the top level of a component

Answer

Hooks cannot be conditional

Answer

Hooks can be called in class or function components

Answer

Hooks can only be called in inside React function components