In React, class-based components have a lifecycle with specific methods that are called at different stages of the component’s existence. These methods can be categorized into three main phases: Mounting, Updating, and Unmounting.
π Mounting Phase
constructor: Initializes the component and sets up the initial state and props.
render: Describes what the UI should look like.
componentDidMount: Runs after the component is rendered, perfect for initializing network requests or integrating with other libraries.
π₯ Updating Phase
shouldComponentUpdate: This method allows you to control whether the component should re-render or not. It should return true or false. This helps to optimize performance by preventing unnecessary updates.
render: Re-renders the component to reflect the new state or props.
componentDidUpdate: Executes after the component updates, ideal for responding to changes or performing DOM operations.
π₯ Unmounting Phase:
componentWillUnmount: Cleans up before the component is removed, such as cancelling network requests or removing event listeners.
β‘ Error Handling Phase:
componentDidCatch: Catches errors during rendering or in lifecycle methods, allowing you to handle them gracefully.
Guess the output when interacting with the component? Comment your answers below!
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