Click here to navigate the course.

Drag the edges to resize the window.

In Projects, you can keep track of your progress as you go throught the tasks. Check each item as you complete it!

Code Editor
Learn
PropTypes

PropTypes in Stateless Functional Components

Remember stateless functional components? You can see some familiar ones in Example.js.

How could you write propTypes for a stateless functional component?

// Usual way: class Example extends React.component{ } Example.propTypes = { }; ... // Stateless functional component way: const Example = (props) => { // ummm ??????

It turns out the process if fairly similar. To write propTypes for a stateless functional component, you define a propTypes object as a property of the stateless functional component itself. Here's what that looks like:

const Example = (props) => { return <h1>{props.message}</h1>; } Example.propTypes = { message: React.PropTypes.string.isRequired };
Report a Bug
If you see a bug or any other issue with this page, please report it here.