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<div class="heading">
  <h1>Advanced Vue.js v2 Chained Select</h1>
  <h4>Using Vue.js v2 to chain mulitiple select inputs together.</h4>

<div class="container" id="app">
  <p class="lead">Lets play around with an advanced chained select field(s) using Vue.js.</p>
  <hr />
  <h3>Advanced Example</h3>
  <div class="row">
    <div class="col-xs-8 col-xs-offset-2 col-sm-6 col-sm-offset-3 col-md-4 col-md-offset-4">
      <!-- Color Select Input -->
      <div class="form-group">
        <select v-model="user_selected_options.color" class="form-control" @change="retotal">
          <option value="" selected>Select Color</option>
          <option v-for="(color, key) in colors" :value="key">{{ color.color }} {{ '$' + color.price.toFixed(2) }}</option>
      <!-- Size Select Input -->
      <div class="form-group">
        <select v-model="user_selected_options.size" class="form-control" :disabled="!user_selected_options.color" @change="retotal">
          <option value="" selected>Select Size</option>
          <option v-for="(size, key) in sizes" :value="key">{{ size.size }} {{ '$' + size.price.toFixed(2) }}</option>
      <!-- Style Select Input -->
      <div class="form-group">
        <select v-model="" class="form-control" :disabled="!user_selected_options.size" @change="retotal">
          <option value="" selected>Select Style</option>
          <option v-for="(style, key) in styles" :value="key">{{ }} {{ '$' + style.price.toFixed(2) }}</option>
      <!-- Total and Add to Basket button -->
      <div class="input-group" align="center">
        <span class="input-group-addon total">{{ '$' + total.toFixed(2)  }}</span>
        <span class="input-group-btn">
          <button class="btn btn-primary" :disabled="!"><span class="fa fa-shopping-basket"></span> Add to Basket</button>



                $purple: #5c4084;

body {
  background-color: $purple;
  text-align: center;
  padding: 50px;
.container {
  background-color: #fff;
  padding-top: 40px;
  padding-bottom: 40px;
  border-radius: 8px;
.heading {
  h1 {
    color: #fff;
    font-size: 4rem;
    font-weight: 900;
    margin: 0 0 5px 0;
    background: -webkit-linear-gradient(#fff, #999);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-align: center;
  h4 {
    color: lighten(#5c3d86,30%);
    font-size: 24px;
    font-weight: 400;
    text-align: center;
    margin: 0 0 35px 0;
  outline: none !important;
.btn.btn-primary {
  background-color: $purple;
  border-color: $purple;
  outline: none;
  &:hover {
    background-color: darken($purple, 10%);
    border-color: darken($purple, 10%);
  &:active, &:focus {
    background-color: lighten($purple, 5%);
    border-color: lighten($purple, 5%);
  & .fa {
    padding-right: 2px;
select.form-control {
  cursor: pointer;
.input-group {
  display: block;
.input-group-addon, .input-group-btn {
  width: auto;
} {
  font-weight: bold;



                new Vue({
  el: '#app',
  data: {
    colors: {
      red: {color: 'Red', price: 1},
      blue: {color: 'Blue', price: 1},
      green: {color: 'Green', price: 1},
      purple: {color: 'Purple', price: 2.5}
    sizes: {
      xsmall: {size: 'X-Small', price: 5},
      small: {size: 'Small', price: 10},
      Medium: {size: 'Medium', price: 10},
      large: {size: 'Large', price: 12},
      xlarge: {size: 'X-Large', price: 15},
      xxlarge: {size: 'XX-Large', price: 18}
    styles: {
      crew_neck: {style: 'Crew Neck', price: 5},
      v_neck: {style: 'V Neck', price: 5}
    user_selected_options: {
      color: '',
      size: '',
      style: '',
      quantity: 0
    total: 0
  methods: {
    retotal: function() {
      let newTotal = 0;
      if(this.user_selected_options.color) {
        newTotal = newTotal + this.colors[this.user_selected_options.color].price;
      if(this.user_selected_options.size != '') {
        newTotal = newTotal + this.sizes[this.user_selected_options.size].price;
      if( != '') {
        newTotal = newTotal + this.styles[].price;
      } = newTotal;