Here are several key roles of JSX in React.js:
JSX provides a more concise and readable syntax for defining the structure of user interfaces. It resembles the structure of the UI, making it easier for developers to understand the component's structure and hierarchy.
JSX allows developers to integrate UI logic and markup in the same file. In a JSX file, you can include both the structure of the component and the logic that controls its behavior, making it easier to manage the component's code.
JSX makes it easy to create React components. You can define custom components and compose them together in a JSX file, enhancing reusability and modularity.
JSX allows you to attach event handlers directly to elements, making it convenient to handle user interactions. For example: