What are props in Vue 3 and how do I use them?

What are props in Vue 3 and how do I use them?

Props are custom attributes you can register on a component in Vue 3. They allow you to pass data from a parent component to a child component.

Can you give me an example of how to define and use props?

Sure! In your child component, you can define props like this: props: { myProp: String }. Then, in the parent component, you can use it like this: <ChildComponent :myProp="'Hello'" />.

What happens if I don't pass a prop to the child component?

If a required prop is not passed, Vue will issue a warning in the console. If it's optional, the child component will receive undefined.

Can I use props to pass functions to child components?

Yes, you can pass functions as props! Just define the prop as a function type and pass it from the parent component.