ReactJS Tutorial - 24 - Component Updating Lifecycle Methods (English)

In React, component lifecycle methods are special methods that are automatically invoked at various stages of a component's lifecycle. These methods allow you to perform actions such as initializing state, fetching data, updating the UI, and cleaning up resources. However, with the introduction of React Hooks, some of the traditional lifecycle methods are being phased out in favor of newer approaches like useEffect. Here's an overview of the traditional component lifecycle methods and their equivalent counterparts using React Hooks:

Class Component Lifecycle Methods:
Mounting Phase:
constructor(): This method is called when a component is first initialized. It's used to set up initial state and bind event handlers.
componentDidMount(): Invoked immediately after a component is mounted (i.e., inserted into the DOM). It's commonly used for data fetching, initializing third-party libraries, or setting up subscriptions.
Updating Phase:
componentDidUpdate(prevProps, prevState): Called after a component's state or props have changed. It's used for performing actions based on state/prop changes, such as updating the UI or fetching new data.
Unmounting Phase:
componentWillUnmount(): Invoked just before a component is unmounted and removed from the DOM. It's used for cleanup tasks like unsubscribing from event listeners or clearing timers.

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0:00 Introduction
0:30 Get Derived State From Props
1:46 Should Component Update
3:03 Render
3:53 Get Snapshot Before Update
4:58 Component Did Update
6:15 Practical
11:14 Children Component Life Cycle
12:56 Unmounting Phase
14:05 Error Handling