vue ---> cdn introduced, some basic operations

Use cdn import vue. Vue and used to do a few simple operations.

cdn import vue:

<script src="https://cdn.jsdelivr.net/vue/2.1.3/vue.js"></script>

introducing a CDN vue-router:

<script src="https://unpkg.com/[email protected]/dist/vue-router.js"></script>

Add information to the dom element

<div id="app">
    数据驱动视图:{{name}}
</div>

<script>
    let vm = new Vue({
        el:'#app',
        data:{
            name:'来自于vue'
        }
    })
</script>
// 上述操作,仅仅只改变了只,并未进行dom的操作.就能在网页中显示

Two-way binding:

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

<script>
    var vm = new Vue({
        el:'#app',
        data:{
            number:'',
        }
    })
</script>

Components of:

// 正常写法(写3遍)的dom结构

// 使用vue组件写法
<div id ='app'>
    <card></card>
    <card></card>
    <card></card>
</div>
<script>
    // 注册组件
    Vue.component('card',{
        template:`<div>
            <img src="logo.png" alt="">
            <h2>vue真好用</h2>
            <p>紫薯布丁|紫薯布丁|紫薯布丁</p>
            <button>按钮一枚</button>
        </div>`
    });
    
    new Vue({
        el:'#app',
    });
</script>

// Dom结构如下:

Monitor keyboard Enter key:

<input @keydown.enter  = "addTask">

Reference https://mp.weixin.qq.com/s?__biz=MzA3MDg1NzQyNA==&mid=2649654408&idx=1&sn=7d9dfcc28404a652a2a65d2bd78e2184&chksm=872c4337b05bca21c5f6d817f8643ce479a6db8fa9e9ea6c720f421118a542beec9960f2a2fa&scene=21#wechat_redirect