@rooks/use-will-unmount

Note: Future updates to this package have moved to the main package rooks. All hooks now reside in a single package which you can install using

npm install rooks

or

yarn add rooks

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About

componentWillUnmount lifecycle as hook for React.

Installation

npm install --save @rooks/use-will-unmount

Importing the hook

import useWillUnmount from "@rooks/use-will-unmount"

Usage

function Message(){

  useWillUnmount(function () {
    alert("unmounted")
  })
  return <p> Message </p>
}


function Demo() {
  const [
    value,
    changeValue
   ] = useState(true);

  function toggleValue(){
    changeValue(!value)
  }

  return <>
    <p><button onClick={toggleValue}>Toggle show </button></p>
    {value && <Message/>}
  </>;
}

render(<Demo/>)

Arguments

| Arguments | Type | Description | Default value | | --------- | -------- | ----------------------------------------------- | ------------- | | callback | function | Callback function which needs to run on unmount | undefined |

A React hook for componentWillUnmount lifecycle method.