rosd89/sam.vue-study.step1-2.html

## sam.vue-study.step1-2.html
<div id="app">
    <span v-if="message.length > 0">{{ message }}</span>
</div>

<script src="https://unpkg.com/vue"></script>
<script type="application/javascript">
  new Vue({
    el: '#app',
    data: {
      message: 'Hello Vue'
    }
  });
</script>
	<div id="app">
	<span v-if="message.length > 0">{{ message }}</span>
	</div>

	<script src="https://unpkg.com/vue"></script>
	<script type="application/javascript">
	new Vue({
	el: '#app',
	data: {
	message: 'Hello Vue'
	}
	});
	</script>