React Hooks Introducing React Hooks 2

Question 1

In which React version were Hooks officially released as a stable feature?

Accepted Answer

React 16.8

Answer

React 15.0

Answer

React 17.0

Answer

React 18.2

Question 2

What is the primary problem Hooks were designed to solve regarding stateful logic?

Accepted Answer

Difficulty reusing stateful logic between components

Answer

Slow rendering of large lists

Answer

Inability to render SVG

Answer

Lack of server-side rendering

Question 3

Which of these patterns did Hooks aim to replace for sharing logic?

Accepted Answer

Higher-order components and render props

Answer

CSS modules

Answer

Webpack loaders

Answer

PropTypes

Question 4

Can you use Hooks inside a class component?

Accepted Answer

No, Hooks only work in function components

Answer

Yes, in any method

Answer

Yes, only in the constructor

Answer

No, Hooks only work in the render method

Question 5

What naming convention identifies a function as a React Hook?

Accepted Answer

It starts with the prefix 'use'

Answer

It ends with 'Hook'

Answer

It is written in all caps

Answer

It is prefixed with 'with'

Question 6

Are Hooks backward-compatible with existing React code?

Accepted Answer

Yes, they are completely opt-in and non-breaking

Answer

No, they require a full rewrite

Answer

Only with a Babel plugin

Answer

Only in new projects

Question 7

Which statement best describes the relationship between Hooks and classes?

Accepted Answer

Hooks provide a more direct API to React features without classes

Answer

Hooks remove classes from React immediately

Answer

Hooks require classes internally

Answer

Hooks only work after converting classes