What are the new features for listening to events in Vue 3?

Currently, I am manually triggering an event:

const emit = defineEmits<{
  (e: 'update:modelValue', value: string | number): void
}>()

// [..]    

<input
  type="text"
  :value="modelValue"
  @input="emit('update:modelValue', ($event.target as // manually
HTMLInputElement).value)"                             // casted
/>

Is there a more efficient approach to handle this? Any alternative to avoid the manual casting?

Hint: The absence of v-model is intentional in this scenario since it will be utilized on the component level.

Answer №1

To improve your template, consider using a function instead of in-lining it. However, remember that you still need to cast it as mentioned in the official documentation.

It's worth noting that the wording of the question is slightly misleading because

const emit = defineEmits<{
  (e: 'update:modelValue', value: string | number): void
}>()

does not affect the @input in the template. When this was included in the question, it initially gave the impression that defineEmits could impact it.

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