, 태그만 넣으면 전부다 빈화면으로 변합니다.

App.vue 코드

<template>
  <nav class="navbar navbar-expand-lg navbar-light bg-light">
    Navbar
    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarNavAltMarkup">
      <div class="navbar-nav">
        Home <span class="sr-only">(current)</span>
        Features
        Pricing
        Disabled
      </div>
    </div>
  </nav>

  <div class="container mt-4">
    <h5>React 개발자의 블로그입니다.</h5>
    <p>- Vue 로 만들었음 -</p>
  </div>

  <router-view :블로그글="블로그글"> </router-view>

</template>

<script>

import blog from './assets/blog.js';

export default {
  name: 'App',
  data() {
    return {
      블로그글 : blog,
    }
  },
  components: {

  }
}
</script>

<style>
#app {
  font-family: Avenir, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  margin-left: 30px;
  margin-right: 30px;
}
</style>

- - - - - - - - - - - - - - -- - - - - - - - - - - - - - -- - - - - - - - - - - - - - -- - - - - - - - - - - - - - -- - - - - - - - - - - - - - -- - - - - - - - - - - - - - -- - - - - - - - - - - - - - -

router.js (경로 src 확인시 맞음

import { createWebHistory, createRouter } from "vue-router";
import ContentList from "@/components/ContentList.vue";

const routes = [
    {
        path: "/list",
        component: ContentList,
    }

];

const router = createRouter({
    history: createWebHistory(),
    routes,
});

export default router;

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main.js

import { createWebHistory, createRouter } from "vue-router";
import ContentList from "@/components/ContentList.vue";

const routes = [
    {
        path: "/list",
        component: ContentList,
    }

];

const router = createRouter({
    history: createWebHistory(),
    routes,
});
export default router;

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ContentList.vue (멀티단어 조건 땜시 강의와는 다르게 컨텐츠리스트라고 이름지었씀니다)

<template>
  <div v-for = "(blogContents, i) in 블로그글" :key="i">
    <h5>{{블로그글[i].title}}</h5>
    <p>{{블로그글[i].date}}</p>
    나오는거맞냐?
  </div>
  <p>아 안나오는걸까..?ㅠ</p>

</template>

<script>
export default {
  name: "ContentList.vue",
  props : {
    블로그글 : Array,
  }
}
</script>

<style scoped>

</style>



npm instal router 할 당시에 따로 에러가 떴다거나 하는 것은 없었습니다.

app.vue 에 아래 코드를 넣으면 전부다 사라집니다.
<router-view :블로그글="블로그글"> </router-view>

반대로 라우터뷰 태그를 지우면 전부다 다시 보이구용...!