Nuxt/test/fixtures/children/pages/patch/_id.vue

<template>
  <div>
    <h2>
      _id: <i data-date-id>
        {{ date }}
      </i>
    </h2>
    <NuxtChild />
  </div>
</template>

<script>
export default {
  asyncData () {
    return {
      date: Date.now()
    }
  }
}
</script>