React memo

React forwardref

const FancyButton = React.forwardRef((props, ref) => (
  <button ref={ref} className="FancyButton">
    {props.children}
  </button>
));

// You can now get a ref directly to the DOM button:
const ref = React.createRef();
<FancyButton ref={ref}>Click me!</FancyButton>;

Source: reactjs.org

React memo

/* this is for es6 onward */
/* React.memo is the new PureComponent */

import React, { memo } from 'react'

const MyComponent = () => {
 return <>something</>
}

export default memo(MyComponent)

Import React, { memo } from 'react';

const MyComponent = React.memo(function MyComponent(props) {
  /* only rerenders if props change */
});

Source: reactjs.org

How to add react.memo in export list

export const MemoMainPostTopic = React.memo(MainPostTopic);
 

//or

const MainPostTopic = memo(() => {
 ...
})
export { MainPostTopic };

Source: stackoverflow.com

Similar codes

0 vote345 views1 answer
Npm i react-router semantic-ui-react semantic-ui-css
Javascript React
0 vote373 views1 answer
How to use adminlte in reacts
Javascript React
0 vote353 views1 answer
React dynamic settings
Javascript React
7 votes350 views2 answers
Br in react native
Javascript React
2 votes304 views1 answer
Range slider mui can't slide
Javascript React
22 votes378 views4 answers
Reactjs copytoclipboard box
Javascript React
31 votes329 views1 answer
Download react router dom
Javascript React
0 vote339 views1 answer
React s.a.createElement("div",{className:"d-none d-lg-flex flex-content"},s.a.createElement(u.a.Body,{noScroll:!0}
Javascript React
22 votes352 views3 answers
How to define array in react js
Javascript React
1 vote344 views1 answer
Shopping cart small icon code react-bootstrap 4.6 fa fas
Javascript React