React Lifecycle Methods, also known as lifecycle hooks or lifecycle events, are functions provided by the React library that allow you to hook into different stages of a component’s lifecycle. These methods enable you to perform specific actions at various points during the lifecycle, such as initializing the state, making API requests, updating the UI, or cleaning up resources. Understanding and utilizing these lifecycle methods is crucial for effectively managing component behaviour and optimizing performance. In this guide, we’ll explore the different lifecycle methods available in React and discuss how and when to use them.
React components go through three main phases in their lifecycle: Mounting, Updating, and Unmounting. Each phase has specific lifecycle methods associated with it. Let’s dive into each phase and explore the lifecycle methods within them.
Mounting Phase:
During the Mounting phase, a component is created and inserted into the DOM. The lifecycle methods in this phase are called in the following order:
- constructor(props): This is the first lifecycle method called when a component is created. It is used to initialize the component’s state and bind event handlers. The constructor receives the component’s props as an argument and should always call…