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useComponentDidMount react Code Snippet in 2022

hookseffectbeginner

Last Updated: 26 November 2022

Executes a callback immediately after a component is mounted.

  • Use the useEffect() hook with an empty array as the second argument. This will execute the provided callback only once when the component is mounted.
  • Behaves like the componentDidMount() lifecycle method of class components.
const useComponentDidMount = onMountHandler => { React.useEffect(() => { onMountHandler(); }, []); };
const Mounter = () => { useComponentDidMount(() => console.log('Component did mount')); return <div>Check the console!</div>; }; ReactDOM.render(<Mounter />, document.getElementById('root'));

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