What is strict mode in React?

React.StrictMode is a useful component for highlighting potential problems in an application. Just like <Fragment>, <StrictMode> does not render any extra DOM elements. It activates additional checks and warnings for its descendants. These checks apply for development mode only.

import React from 'react';
function ExampleApplication() {
return (
<Header />
<ComponentOne />
<ComponentTwo />
<Footer />

In the example above, the strict mode checks apply to <ComponentOne> and <ComponentTwo> components only.

January 09, 2022