App.vue
main.js
 
<template>
  <h1>v-model Example</h1>
  <p>Write something, and see the 'inputValue' data property update automatically.</p>
  <input type="text" v-model="inputValue"> 
  <p>inputValue property: "{{ inputValue }}"</p>
</template>

<script>
export default {
  data() {
    return {
      inputValue: null
    };
  }
}
</script>                  
import { createApp } from 'vue'

import App from './App.vue'

const app = createApp(App)
app.mount('#app')
                  
http://localhost:5173/