App.vue
main.js
 
<template>
  <h1>Example</h1>
  <p>Start writing inside the input element, and the text will be copied into the last paragraph by the use of the '$refs' object.</p>
  <input ref="inputEl" @input="getRefs" placeholder="Write something..">
  <p ref="pEl"></p>
</template>

<script>
  export default {
    methods: {
      getRefs() { 
        this.$refs.pEl.innerHTML = this.$refs.inputEl.value;
      }
    }
  };
</script>                  
import { createApp } from 'vue'

import App from './App.vue'

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