How do I define prop types in Vue 3?

How do I define prop types in Vue 3?

In Vue 3, you can define prop types using the props option in your component. You can specify the type of each prop like this:

props: {
  myProp: {
    type: String,
    required: true
  }
}

Can I use custom validators for props?

Yes, you can use custom validators by providing a validator function in the prop definition. For example:

props: {
  myProp: {
    type: Number,
    validator: (value) => {
      return value > 0;
    }
  }
}

What happens if a prop type is not matched?

If a prop type is not matched, Vue will issue a warning in the console during development, but it won't prevent the component from rendering.

Can I define default values for props?

Yes, you can define default values for props using the default property. For example:

props: {
  myProp: {
    type: String,
    default: 'default value'
  }
}