JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/1.0.14/vue.js"></script>
<div id="app">
  <h1>Vue JS Multiple Fields Repeater</h1>
  <div class="border" v-for="i in field1.length">
    <input v-model="field1[i]" placeholder="Enter First Name">
    <input v-model="field2[i]" placeholder="Enter Last Name">
  </div>
  <button @click="AddField">
    New Field
  </button>
  <pre>{{ $data | json }}</pre>
</div>

CSS

.border {
  border: 1px solid black;
  padding: 3px;
  margin-bottom: 5px;
}

JavaScript

new Vue({
  el: '#app',
  data: {
    field1: [] ,
    field2: [] 
  },
  created: function() {
      this.field1.push('');
      this.field2.push('');
  },
  methods: {
    AddField: function () {
      this.field1.push('');
      this.field2.push('');
    }
  }
});