Approach to implement componentWillUnmount Method
- This React code consists of two components –
App
andComponentOne
. - The
App
component manages the state of whether to displayComponentOne
. - Clicking the “Delete the component” button sets the state to not display
ComponentOne
, causing it to unmount and triggering thecomponentWillUnmount
lifecycle method with an alert saying “The component is going to be unmounted.“
Explain the purpose of the componentWillUnmount() method?
Every React Component has a lifecycle of its own, the lifecycle of a component can be defined as the series of methods invoked in different stages of the component’s existence. Mounting and Unmounting refer to key lifecycle phases that occur during creating and removing components or elements in a web application. In this article, we will learn the purpose of the componentWillUnmount() method.
Syntax of componentWillUnmount Method:
componentWillMount() {
// Perform the required
// activity inside it
}