Vue3.js (14) component1

src 파일에 component 폴더 생성

src/component/DetailVue.vue

<template>
  <div class="wrapper">
    <div class="container">
      <h2>Detail Page</h2>
      <button @click="closeDetail">close</button>
      <input type="text" v-model="username" />
      <button @click="sendData">send Data</button>
    </div>
  </div>
</template>

<script>
export default {
  name: "displayDetail",
  data() {
    return {
      username: "",
    };
  },
  methods: {
    closeDetail() {
      this.$emit("closeDetail");
    },
    sendData() {
      this.$emit("sendData", this.username);
    },
  },
};
</script>

<style>
.wrapper {
  background: rgba(0, 0, 0, 0.5);
  position: fixed;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  display: flex;
  justify-content: center;
  align-items: center;
}
.container {
  background: #fff;
  width: 60%;
}
</style>

src/component/GreetingUser.vue

<template>
  <div>
    <h2 v-bind="$attrs">Hello {{ username }}!!</h2>
    <h2>오늘이 {{ numberOfvisit }} 번째 방문입니다.</h2>
    <h2>사이트 이름은 {{ siteInfo.name }} 입니다.</h2>
  </div>
</template>

<script>
export default {
  name: "Greeting User!!",
  inheritAttrs: false,
  props: {
    // username: String,
    username: {
      type: String,
      default: "user!!",
    },
    numberOfvisit: {
      type: Number,
      default: 0,
    },
    siteInfo: {
      type: Object,
      default: () => {
        return { name: "-", teacher: "-" };
      },
    },
  },
};
</script>

<style scoped></style>

src/component/ProductItem.vue

<template>
  <li>
    <p class="title">{{ product.name }}</p>
    <p class="image">
      <img
        :src="'https://placeimg.com/200/100/${product.id}'"
        :alt="product.name"
      />
    </p>
    <p class="price">{{ product.price }}</p>
  </li>
</template>

<script>
export default {
  name: "product-item",
  props: { product: Object },
};
</script>

<style scoped>
li {
  border: 2px solid salmon;
  margin-bottom: 0.5rem;
}
.title {
  font-size: 24px;
  color: #2c82c9;
  font-weight: bold;
}
</style>

src/component/ProductList.vue

<template>
  <div>
    <ul>
      <li>
        <ProductItem
          v-for="product in products"
          :key="product.id"
          :product="product"
        />
      </li>
    </ul>
  </div>
</template>

<script>
import ProductItem from "./ProductItme";

export default {
  components: {
    ProductItem,
  },
  name: "product-list",
  props: {
    products: {
      type: Array,
      default: () => {
        return [];
      },
    },
  },
};
</script>

<style></style>

component
app.vue
<template>
  <div>
    <!-- component -->
    <GreetingUser
      :username="username"
      :numberOfvisit="numberOfvisit"
      :siteInfo="siteInfo"
    />
    <GreetingUser />
    <button @click="changeName()">change</button>
    <ul>
      <li v-for="product in products" :key="product.id">{{ product }}</li>
    </ul>

    <ProductList :products="products" />
    <GreetingUser id="greeting" />

  </div>
</template>

<script>
 import GreetingUser from "./components/GreetingUser.vue";
 import ProductList from "./components/ProductList.vue";
 import DetailVue from "./components/DetailVue.vue";
 import CompLevel1 from "./components/provied-inject/CompLevel1.vue";

export default {
  name: "App",
  components: {
     GreetingUser,
     ProductList,
     DetailVue,
     CompLevel1,

  },
  provide() {
    return {
      name: this.username,
    };
  },
  data() {
    return {
      username: "bada",
      actionTab: "menu1",
      displayDetail: false,
      products: [
         {
           id: 0,
           name: "TV",
           price: 500000,
           company: "LG",
         },
         {
           id: 1,
           name: "Moniter",
           price: 40000,
           company: "Samsung",
         },
         {
           id: 2,
           name: "Iphone",
          price: 70000,
          company: "Apple",
        },
      ],
      username: "bada",
      numberOfvisit: undefined,
      siteInfo: undefined,
    };
  },
  methods: {
     changeName() {
       this.username = "DDochi";
    },
    close() {
      this.displayDetail = false;
    },
    showData(data) {
      console.log(data);
    },
  },
  directives: {},
  computed: {},
  watch: {},
};
</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-top: 60px;
}
</style>