9 нояб. 2017 г. · Best practice for an "empty" component - null? empty div? (A valid React element (or null) must be returned) · reactjs · typescript. Is it possible to return empty in react render function? Is it good practice for a react component to have returned value ... Другие результаты с сайта stackoverflow.com

28 февр. 2023 г. · In this post, we'll explore why using return null from React components is considered bad practice and why return false is a better alternative.

When a component returns null , it tells React not to render anything in the DOM for that component. This can be useful when you want to conditionally render a ...

22 июл. 2024 г. · Before Hooks were introduced in React I used to create "null components". In other words components that render nothing.

27 мая 2022 г. · Is it bad to have components that return null and are used just to subscribe to some events or for other purposes that do not include UI. Conditional rendering vs. returning null : r/reactjs - Reddit Which is preferred among null, an empty Fragment, and false? Другие результаты с сайта www.reddit.com

In rare cases you might want a component to hide itself even though it was rendered by another component. To do this return null instead of its render output.

26 мая 2021 г. · Conditional rendering on React helps you build your apps avoiding unnecessary renders depending on some validations, and it can be used on tooltips, modals, ...

27 мар. 2023 г. · If you wish to return an empty React component, return either true , false , null , or undefined . These are all valid React nodes…

12 окт. 2023 г. · While both null and false can be used in React to prevent rendering, returning false stands out as a more straightforward, clear, and efficient choice.

Children.map( children, (child) => isValidElement(child) && child.type(child.props)) This way you can check whether a given child returns null/false etc.