How do you create your own component class in React?

How do you create your own component class in React?

• A. Extend HTMLElement
• B. Subclass React.Component
• C. Create a function that returns JSX
• D. Instantiate React.Component

Answer: (B)

In React, you create your own component class by extending the base class React.Component and implementing a render method that returns the UI (JSX). This sets up the component with React’s lifecycle and state features. Extending HTMLElement would be for web components, not React. Writing a function that returns JSX creates a functional component, not a class component. Instantiating React.Component isn’t how you define a new component class—you extend it to build your own subclass.

In React, you create your own component class by extending the base class React.Component and implementing a render method that returns the UI (JSX). This sets up the component with React’s lifecycle and state features. Extending HTMLElement would be for web components, not React. Writing a function that returns JSX creates a functional component, not a class component. Instantiating React.Component isn’t how you define a new component class—you extend it to build your own subclass.