React how to apply`componentDidMount()

Question

I am using redux and reactjs. I need to add few function in componentDidMount() to the following root react component.

I am not using react class extend. How can I apply componentDidMount() and my logic there?

   const App = () => (
      <div>
        <NavigationContainer />
      </div>
    )

export default App

Answer 1

You can wrap the JSX in a return call and simply do your logic before, even interacting with your redux store.

const App = () => {
  const willRunOnEachRender = 'runs on each render'
  return (<div>
    <NavigationContainer willRunOnEachRender={willRunOnEachRender} />
  </div>
 )
}
export default App