Vue v-onVue v-on Vue v-on Vue v-on ``` v-on 本场比赛得分{{fenshu}}

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>v-on</title>
    <script type="text/javascript" src="../assets/js/vue.js"></script>
</head>
<body>
<h1>v-on</h1>
<hr>
<div id="app">
    <span>本场比赛得分{{fenshu}}</span>
    <p>
        <button v-on:click="jia">加分</button>
        <button @click="jian">减分</button>
        <input type="text" v-on:keyup.enter="onEnter" v-model="fenshu2">
    </p>
</div>
</body>
</html>
<script>
    var app = new Vue({
        el:'#app',
        data:{
           fenshu:0,
           fenshu2:1
        },
        //事件属性
        methods:{
            jia:function(){
                this.fenshu++
            },
            jian:function(){
                if(this.fenshu==0){
                    this.fenshu=0
                }else{
                    this.fenshu--
                }
            },
            onEnter:function(){
                this.fenshu=this.fenshu+parseInt(this.fenshu2)
            }
        }
    })
</script>