Creating Stateless Components

In large React application, ensuring that our components are both flexible and easy to maintain is of supreme importance. By creating stateless components, we can build pieces of our UI that rely entirely on their inputs (props) and do not manage any internal state. This approach simplifies our code and makes our components highly reusable, allowing us to integrate them in various parts of our application with minimal adjustments.

Stateless reusable components

Stateless reusable components are functional components that do not hold any internal state. Instead, they receive all the information they need through props. By doing so, these components become more predictable, easier to test, and more flexible in different contexts.

Before we dive into the code, consider these guiding principles for creating a stateless reusable component:

• Single responsibility: Each component should do one thing well, like displaying a label or rendering a list of items.

• Props-driven: All dynamic data, event handlers, and styling options should come through props.

• No internal state: Avoid holding or mutating any internal state.

Creating a stateless Button component

Let's create a Button component that only needs a label (the text displayed) and an onClick handler (a function passed as a prop) to work. By not managing its own state, this button is easy to plug into various scenarios—such as saving data, canceling an action, or navigating somewhere—just by changing its props.

The following code shows a Button component that relies entirely on props to determine its appearance and behavior.