var vm = new Vue({            el: "#app",            data: {                name: "苹果",                price: 10,                num: 1            },                    components:{                "goods":goods            }        });var goods = {        template: "
     
      
名字：{
    {name}}
      
价格：{
    {price}}
      
数量：{
    {num}}
      
总价：{
    {totle}}
      
      +
      
      -
     
",            props: ["name",'price','num'],                        computed:{                totle:function(){                                        console.log(this)                    return this.num*this.price                                    }            },methods: {                jia: function() {                                        this.$parent.num++    zhixiang指向vm.num                },                            jian: function() {                                        this.$parent.num--                }            }                    }