State and Lifecycle in React

Zach Landis
2 min readJan 3, 2024

Welcome to the next installment in our series on React — State and Lifecycle in React. Providing a good grasp of React State Management and React Lifecycle Methods, this guide is instrumental to anyone wanting to take their React knowledge a step further.

Understanding State in React

React State is an integral aspect of React components which helps in making dynamic and interactive elements. It is an object in a component that stores property values that belong to that very component. Whenever the state changes, the component re-renders.

For example, if you’re building a counter, the count value would be a state as it changes and updates during interaction. When you understand React State Management, you can create more responsive apps which deliver sublime user experiences.

React Lifecycle Methods

The other half of this equation is React Lifecycle Methods. These inbuilt methods get automatically executed by React during different phases of a component’s life like creation, updating, rendering, and deletion.

Do you remember the counter we talked about? React lifecycle methods would dictate when and how that counter is created, updated, and eventually unmounted from our app.

Mastering Lifecycle in React will aid you in expertly managing all aspects of component behavior and performance. This is why we highly advocate that you follow our React State and Lifecycle Tutorial.

Using State and Lifecycle Together in React

React State Management and React Lifecycle Methods go hand in hand. It’s when these concepts come together that you can truly start creating interactive applications.

Let’s consider our ongoing counter example, the state holds the count value while lifecycle methods dictate when it gets updated. So you can see how Lifecycle Methods and State Management play crucial roles in every React application.

Differences between State and Props in React

Unlike state, props (short for properties) in React facilitate component communication. They get passed to the component in a way similar to function arguments. Check our previous posts to explore in detail about the variations between state and props.

Best Practices for State and Lifecycle in React

React emphasizes on pure components — components that return the same output given the same state or props. In terms of state, only use it when you cannot do without it, and only make minimal state modifications.

When it comes to lifecycle methods, avoid heavy operations in render or componentWillUpdate methods. Instead, prefer using them in componentDidMount or componentDidUpdate.

Go beyond learning state and Lifecycle in React, strive for applying these best practices for efficient and effective coding.

This concludes our overview on State and Lifecycle in React. Stay tuned to our series and move ahead on your journey to React proficiency. Next up: Handling Forms and User Input in React!

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