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      • Is it advisable to declare events using the props API?
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  • We recommend:
  • When is it recommended to use a callback as a prop?

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  1. Guides
  2. Frequent questions

Is it advisable to declare events using the props API?

It is not recommended to use the props API to create an event, as this callback associated as props will have the following limitations:

PreviousFrequent questionsNextHow to declare events for your component at the type level for TSX?

Last updated 1 year ago

Was this helpful?

  1. Its name cannot have the on prefix since, if it does, Atomico will recognize it as a property expecting to listen to the event.

  2. It can only have one listener, limiting others from observing the event.

We recommend:

  1. Using the hook to dispatch component-level events or any custom hook.

  2. Using the API to dispatch events when the observed prop changes.

Always prefer the two previously mentioned methods, as they allow you to:

  1. Define if the event bubbles.

  2. Define if the event is cancelable.

  3. Define if the bubbling event can penetrate the shadow DOM.

  4. Define a custom constructor for the event.

  5. Having multiple listeners for the event

When is it recommended to use a callback as a prop?

Cuando se busca comunicar parametros o leer el retorno de este, ejemplo:

const MyForm = c(
  ({ getPosts }) => {
    const posts = useAsync(getPosts, []);

    return <host></host>;
  },
  {
    props: {
      getPosts: {
        type: Function,
        value: async (): Promise<{ id: number; title: string }[]> => [],
      },
    },
  }
);
🤔
useEvent
Prop.event