질문드려요,

안녕하세요, 좋은 강의 감사합니다.!

$emit, props연습할때에

component 등록 방법을 Vue.component로 변경해서 연습을 해봤는데요, 이벤트가 작동은 하지만 아래와 같은 오류가 나요

어느부분을 확인해봐야하는지 어떻게 고쳐야 하는지 아직 잘 모르겠습니다 ㅜㅜ

답변 부탁드려요..!

[오류 내용]

vue.js:634 [Vue warn]: Property or method "addNumber" is not defined on the instance but referenced during render. Make sure that this property is reactive, either in the data option, or for class-based components, by initializing the property. See: https://vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties.

(found in <Root>)

vue.js:634 [Vue warn]: Property or method "propsnum" is not defined on the instance but referenced during render. Make sure that this property is reactive, either in the data option, or for class-based components, by initializing the property. See: https://vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties.

(found in <Root>)

[연습 소스]

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app">
        <app-header v-on:pass="logText"></app-header>

        <app-content v-on:addnum="addNumEvent" v-bind:propsnum="number">
            <template id="appContentTemp">
                <div>
                    <button v-on:click="addNumber">Click Add</button>
                    <p>{{propsnum}}</p>
                </div>
            </template>
        </app-content>
       
    </div>
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
    <script>

        var appheader = {
            template: '<button v-on:click="passEvent">Click Event!</button>',
            methods:{
                passEvent:function(){
                    this.$emit('pass');
                }
            }
        }

        Vue.component('app-content', {
            template : '#appContentTemp',
            props : {
                propsnum:Number,
            },
            methods: {
                addNumber : function(){
                    this.$emit('addnum');
                }
            }
        }) 

        new Vue({
            el:'#app',
            components:{
                'app-header' : appheader
            },
            data : {
                number : 10
            },
            methods:{
                logText : function(){
                    console.log('hi');
                },
                addNumEvent:function(){
                    this.number += 1;
                    console.log(this.number);
                }
            }
        })

    </script>
</body>
</html>

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