<template>
  <div>
    <v-mask-input
      v-model="modelA"
      label="3 Numbers"
      mask="###"
      placeholder="###"
    />

    <v-mask-input
      v-model="modelB"
      label="# + 3 Numbers"
      mask="\####"
      placeholder="####"
    />
  </div>
</template>

<script setup>
  import { shallowRef } from 'vue'

  const modelA = shallowRef(null)
  const modelB = shallowRef(null)
</script>