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

var Vue = require('Vue');

<div id="app">{{ message }}</div>
<script src="https://unpkg.com/vue/dist/vue.js"></script>
<script>var app = new Vue({el: '#app',data: {message: 'Hello Vue!'}
})
</script>

<div id="app-2"><span v-bind:title="message">Hover your mouse over me to see my title!</span><!-- v-bind被称为指令，指令带有前缀 v-，以表示它们是 Vue.js 提供的特殊属性 v-bind：变量=‘数据’-->
</div>

var app2 = new Vue({el: '#app-2',data: {message: 'You loaded this page on ' + new Date()}
})

<div id="app-3"><p v-if="seen">Now you see me</p></div><!-- v-if 条件指令，v-if=‘数据（布尔值）’-->

var app3 = new Vue({el: '#app-3',data: {seen: true}//设置为false时，P元素不渲染
})

<ol id="app-4"><li v-for="todo in todos">{{ todo.text }}</li></ol><!-- v-for 循环指令，v-for=‘列表项 in 数组数据’-->

var app4 = new Vue({el: '#app-4',data: {todos:[{text: 'Learn JS'},{text:'Learn Vue'},{text: 'Build something awesome'}]}//app4.todos.push({text:'New item'})会新增列表项
})

<div id="app-5"><p>{{ message }}</p><button v-on:click="reverseMessage">Reverse Message</button><!-- v-on绑定事件指令，v-on：事件类型=‘调用函数’ -->
</div>

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

<div id="app-6"><p>{{ message }}</p><input v-model="message"><!-- v-model数据绑定指令 v-model=‘绑定的数据’-->
</div>

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

<ol><todo-item></todo-item><!--自定义组件-->
</ol>

Vue.component('todo-item', {//定义一个组件props: ['todo'],//将数据从父作用域传到子组件template: '<li>{{ todo.text }}</li>'
})

<ol id="app-7"><todo-item v-for="item in groceryList" v-bind:todo="item"></todo-item><!--先循环从groceryList数组中分别获取列表项为item，将item赋值给todo分别传递给子组件-->
</ol>

Vue.component('todo-item', {props: ['todo'],//子元素通过props接口实现与父元素的数据传递template: '<li>{{ todo.text }}</li>'
})
var app7 = new Vue({el: '#app-7',data: {groceryList: [{ text: 'Vegetables' },{ text: 'Cheese' },{ text: 'Whatever' }]}
})