Vue 2.0 Hello World

HTML

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

<div id="app">
  <button class="button1 active">Button1</button>
  <button class="button2">Button2</button>
  
  <div class="block test1">
    Block
  </div>
</div>

CSS

button.active {
  background: red;
}

.block.test1 {
  background: blue;
}
.block.test2 {
  background: green;
}

JavaScript

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