SOURCE

<div id="app">
    <p v-if="show">You can see me</p>
    <p v-else>Now you see me</p>
    <template v-if="show">
        <h1>Heading</h1>
        <p>inside a template</p>
    </template>
    <p v-show="show">Do you also see me</p>
    <button @click="show=!show">Swich</button>
</div>
<script>
    new Vue({
        el:"app",
        data:{
            show:true
        }
    });
</script>