Vue 2.0 Hello World

HTML

<script src="https://unpkg.com/vue"></script>




<div id="app">
  <input type="number" v-model="quantity"/>
</div>

JavaScript

new Vue({
  el: '#app',
  data: {
    quantity: ''
  },
  watch: {
    quantity (val) {
      this.quantity = val.replace('.', '')
    }
  }
})