Евгений

var hours = [];

  for (let j = startTime.getHours(); j <= endTime.getHours() + 1; j++) {
    hours.push(j);
  }

  this.ArrBookingHourd.date.push({
    date: startTime.toDateString(),
    hours: hours
  });

<script type="text/javascript">
	window.user = JSON.parse('<?= json_encode($user, JSON_UNESCAPED_UNICODE) ?>');
</script>

<template>
  <div
    class="element"
    v-for="data in elementData"
    :key="data.id"
    @click="data.show = !data.show"
  >
    <h1>Клик</h1>
    <div 
      v-if="data.show" 
      class="elementInfo"
    >
      <h5>{{ data.name }}</h5>
      <p>{{ data.id }}</p>
    </div>
  </div>
</template>