vue-conditionals.html

<div id="app">
  <span v-if="friend">Hello again, {{ name }}</span>
</div>

<script src="https://cdn.jsdelivr.net/npm/vue"></script>
<script>
  const options = {
    el: '#app',
    data: { name: 'Vue', friend: true }
  };
  const app = new Vue(options);
</script>