SOURCE

var app = new Vue({
  el:'#app',
  data:{
    message:'hello vue!'
  }
});

var app2 = new Vue({
  el:"#app2",
  data:{
    message:'在'+new Date()+'时加载页面'
  }
});
var app3 = new Vue({
  el: '#app-3',
  data: {
    seen: true
  }
});
var app4 = new Vue({
  el: '#app-4',
  data: {
    todos: [
      { text: 'Learn JavaScript' },
      { text: 'Learn Vue' },
      { text: 'Build something awesome' }
    ]
  }
});

var app5 = new Vue({
  el: '#app-5',
  data: {
    message: 'Hello Vue.js!'
  },
  methods: {
    reverseMessage: function () {
      this.message = this.message.split('').reverse().join('')
    }
  }
})

var app6 = new Vue({
  el: '#app-6',
  data: {
    message: 'Hello Vue.js!'
  }
})

Vue.component('todo-item', {
  props: ['todo'],
  template: '<li>{{ todo.text }}</li>'
})
var app7 = new Vue({
  el: '#app-7',
  data: {
    groceryList: [
      { text: 'Vegetables' },
      { text: 'Cheese' },
      { text: 'Whatever else humans are supposed to eat' }
    ]
  }
})

<script src="https://unpkg.com/vue/dist/vue.js"></script>
<div id="app">
  {{ message }}
</div>

<div id="app2">
  <span v-bind:title="message">
    移动鼠标等待一秒钟就可以看到标题显示时间{{message}}
  </span>
</div>

<div id="app-3">
  <p v-if="seen">Now you see me</p>
</div>

<div id="app-4">
  <ol>
    <li v-for="todo in todos">
      {{ todo.text }}
    </li>
  </ol>
</div>

<div id="app-5">
  <p>{{ message }}</p>
  <button v-on:click="reverseMessage">Reverse Message</button>
</div>

<div id="app-6">
  <p>{{ message }}</p>
  <input v-model="message" />
</div>

<div id="app-7">
  <ol>
    <todo-item v-for="item in groceryList" v-bind:todo="item"></todo-item>
  </ol>
</div>