helloWorld

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script src="../js/vue.js"></script>
    <!--现在可以这样写div中的内容了-->
    <div id="app">{{message}}</div>
    <script>
        //编程范式:声明式
        const app = new Vue({
            el: '#app', //用于挂载要管理的元素
            data: { //定义数据
                message: 'helloWorld!'
            }
        });
       
    </script>
    
</body>

</html>

列表展示

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
     <div id="app">
         <ul>
             <!--使用V-for指令,woc真的见识了,还能这么玩~~~-->
             <li v-for="item in movies">{{item}}</li> 
         </ul>
     </div>
    <script src="../js/vue.js"></script>
    <script>
        const app=new Vue({
            el:'#app',
            data:{
                message:'age',
                movies:['saber','archer','lancer','man']
            }
        });
        app.movies.push("666");
    </script>
</body>
</html>

简简单单计数器

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app">
        <h2>当前计数:{{counter}}</h2>
        <!--新的指令
          语法糖:简写
          如v-on:click的简写就可以用@click
        -->

        <button v-on:click="add">+</button>
        <button @click="sub">-</button>
    </div>
    
    <script src="../js/vue.js"></script>
    <script>
        const app=new Vue({
            el:'#app',
            data:{
                counter:0
            },
            methods:{
                add:function(){
                      console.log("add被执行");
                      this.counter++;
                      //一点疑惑,这里的this咋能获取到counter,这里好像是vue做了一层代理(proxy)
                },
                sub: function(){
                    console.log("sub被执行");
                    this.counter--;
                } 
            },
            beforeCreate:function(){

            },
            //当对象执行到这一步时就会调用,我们可以通过此方式来知道对象执行到哪一步了
            created:function(){
                  console.log("create"); 
            },
            mounted:function(){

            }
            
        });
    </script>
</body>
</html>
Last modification:April 16th, 2020 at 10:05 pm
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