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App.vue
CompOne.vue
main.js
 
<template>
  <h2>Example v-model Directive</h2>
  <p>Name: "<pre>{{ name }}</pre>"</p>
  <p>Height: <pre>{{ height }}</pre> cm</p>
  <comp-one 
    v-model:name="name"
    v-model:height="height"
  />
</template>

<script>
export default {
  data() {
    return {
      name: 'Olaf',
      height: 120
    }
  }
}
</script>

<style>
pre {
  display: inline;
  background-color: yellow;
}
</style>                  
<template>
  <div>
    <h3>Component</h3>
    <p>Two inputs are bound to the component with v-model through props and emits.</p>
    <p>
      <label>
        Name: 
        <input
          type="text"
          :value="name"
          @input="$emit('update:name', $event.target.value)"
        />
      </label>
    </p>
    <p>
      <label>
        Height:
        <input
          type="range"
          :value="height"
          @input="$emit('update:height', $event.target.value)"
          min="50"
          max="200"
        />
        {{ this.$props.height }} cm
      </label>
    </p>
  </div>
</template>

<script>
  export default {
    props: ['name','height'],
    emits: ['update:name','update:height']
  }
</script>

<style scoped>
div {
  border: solid black 1px;
  padding: 10px;
  margin: 20px 0;
  max-width: 300px;
}
</style>                  
import { createApp } from 'vue'

import App from './App.vue'
import CompOne from './components/CompOne.vue'

const app = createApp(App)
app.component('comp-one', CompOne)
app.mount('#app')
                  
http://localhost:5173/