Hello world for Vue.js!

DatHello.vue

<script src="https://unpkg.com/vue"></script>

<div id="app">
  <p id="hello">{{ message }} hi!</p>
</div>

<script>
new Vue({
  el: '#app',
  data: {
    message: 'Hello Vue.js!'
  }
})
</script>

<style>
#hello {
  font-family: 'Avenir', Helvetica, Arial, sans-serif;
  text-align: center;
  color: #2c3e50;
  margin-top: 60px;
}
</style>