Crowdly

If you want to focus on an input field when a component mounts, is this piece of code correct?

useEffect(() => { inputRef.focus(); }, [inputRef]);

True

False

HOC is a function that takes a component and returns a new component

True

False

When should you avoid using refs in React?

When you need to directly modify the DOM.

When handling animations and transitions.

When you can use state and props to achieve the same result.

When accessing third-party libraries.

How does useRef differ from useState in terms of updating and re-rendering?

useState updates cause re-renders, while useRef updates do not

useRef updates cause re-renders, whereas useState does not

useState holds primitive values only, while useRef holds complex objects

useRef only works with DOM elements, while useState does not

How to create ref?

refCreate()

useRef()

React.ref()

React.current(ref)

Good cases for using refs:

Reading from input elements

Managing media playback

Triggering imperative animations

Handling modal window closing

Managing focus

Writing into input elements

Integrating with third-party DOM libraries

Using with forms

Managing text selection

Which of the following is a reason for using HOCs?

Fetching data from an API

Styling components

Reusing component logic

Managing component state

How to create a HOC that passes additional ref to a component?