组件 创建,注册,挂载

提示

1scoped(样式需要scoped声明以免污染全局)
2必须有div根元素包裹

创建组件

在相应分层目录创建组件

示例如下:

src/components/home/v_home.vue

<template>
   <div class="home">
      <div class="red">
         <h2 >{{ title }}</h2>
      </div>
      
   </div>
</template>
 
<script>
export default {
 
  name: 'v_home',
 
  data() {
    return {
      title:"我是一个首页组件"
 
    };
  },
};
</script>
 
<style lang="css" scoped>
  .red
  {
    background-color: red;
  }
</style>

在父级或者根组件注册

2.1引入

import Home from "./components/home/v_home.vue";

2.2注册

components: {
    // HelloWorld
    'v-home':v_home,
   },

2.3挂载

<v-home></v-home>

整体示例:

<template>
  <div id="app">
    <!-- 开始 -->
    <!-- <router-view></router-view>   -->
    <!-- <img alt="Vue logo" src="./assets/logo.png"> -->
    <!-- <HelloWorld msg="Welcome to Your Vue.js App"/> -->
        <v-home></v-home>
       <!-- 结束 -->
 
  </div>
</template>
 
<script>
// import HelloWorld from './components/HelloWorld.vue'
import Home from "./components/home/v_home.vue";
export default {
  name: 'app',
  components: {
    // HelloWorld
    'v-home':v_home,
   },
  data()
  {
    return{
      msg:"你好,vue",
 
      isRed:true,
     
    
    }
  },
  methods:
  {
    
  },
}
</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; */
}
.red
{
  background-color: red;
}
 
.blue
{
 background-color: #1F20DFFF;
}
 
.size
{
  width: 200px;
  height: 200px;
}
</style>