When to use createRef vs useRef?
The useRef hook is for creating refs in React functional components. On the other hand, the createRef function is for creating refs in ES6 classes. The createRef function is considered a legacy API. Only use it if you're maintaining legacy codebase that uses class components.
How to create a ref in a class component?
To declare a ref inside a class component, call createRef and assign its result to a class field:
- import { Component, createRef } from 'react';
- class Form extends Component {
- inputRef = createRef();
What is the difference between useRef and useState?
Understanding the differences between useState and useRef is crucial for effective state management and DOM manipulation in React. Use useState when you need stateful logic that affects rendering. Use useRef for accessing DOM elements and persisting values without causing re-renders.
What is the difference between useRef and ref?
Both useRef and ref can be used to reference DOM elements. However, with useRef , you access the DOM element via current property, while with ref in class components, you directly access the DOM element via the ref object.
The difference is that createRef will always create a new ref. In a class-based component, you would typically put the ref in an instance property during construction.
У більшості штатів є й інші керівники виконавчої влади, їх також обирають шляхом прямого голосування включно з віце- губернатором, генеральним прокурором, секретарем штату, а також очільником аудиторської служби штату і керівниками різних відомств (комісій). Штати мають право визначати власний устрій так, як вважають …256 pages
From the depths of the outback comes a wildly anarchic, in-your-face heroine for a new age of madness…maverick British creators Alan Martin and Jamie (Gorillaz) Hewlett present Tank Girl! Join everybody’s favourite beer-swilling, chain-smoking, kangaroo-worrying lunatic as she blasts her way through a dazzling …
