JSFiddle - React, Tailwind, and code Playground

HTML

<div id='vueRoot'>
  <input v-model='customer.address'>
  <br>
  <input    
    :value="customer.address || ''" 
    @input="customer.address = event.target.value"
  >
</div>

JavaScript

vm = new Vue({
	el:'#vueRoot',
  data:{customer:{address:"NULL"}}
})