Shopify Upsell Modal

How To Use Shopify Upsell Modal

1. add snippet to cart.liquid file at the bottom of the file
{% include 'upsell-modal' %}

2. add css to theme.liquid in the header
{{ 'upsell-modal.scss' | asset_url | stylesheet_tag }}

upsell-modal.liquid

<div class="upsell-wrapper">
  <div class="upsell-modal">
    <div class="modal-close">
      <a href="#" class="close-upsell">X</a>
   	</div>
    <strong>DON'T FORGET THE STOCKING STUFFERS!</strong>
    <p>We’ve gathered some of our favorite stocking stuffers for this holiday season. Get some before it is too late!</p>
    <ul class="upsell-grid">
    {% comment %}
    this can be improved by adding theme settings and looping all handle, but to keep it simple I hard coded the values.
    {% endcomment %}
      <li data-handle="dj-snake-bracelet">
      	{{ 'loading.gif' | asset_url | img_tag }}
      </li>
      <li data-handle="blasterjaxx-bracelet">
      	{{ 'loading.gif' | asset_url | img_tag }}
      </li>
      <li data-handle="adventure-club">
      	{{ 'loading.gif' | asset_url | img_tag }}
      </li>
      <li data-handle="borgore">
      	{{ 'loading.gif' | asset_url | img_tag }}
      </li>
    </ul>
    <div style="clear:both;"></div>
    <div class="upsell-buttons">
      <a href="#" class="no-thanks close-upsell">No thanks!</a>
      <a href="/checkout" class="upsell-checkout">CHECKOUT</a>
    </div>
  </div>
</div>
<script>
  jQuery(document).ready(function(){
    jQuery('.close-upsell').click(function(){
    	jQuery('.upsell-wrapper').fadeOut(300);
    });
    
    function go_shopify_product(handle){
      var product = '';

      jQuery.ajax({
        url: '/products/'+handle+'.js',
        dataType: 'json',
        async: false,
        success: function(data) {
          product = data;
        }
      });

      return product;
    }
    
    jQuery('.upsell-grid li').each(function(i, items_list){

      	var productHTML 	= '';
      	var product_handle 	= jQuery(this).data('handle');
      	var product 		= go_shopify_product(product_handle);
      	var price 			= Shopify.formatMoney(product.price, "{{ shop.money_with_currency_format }}");

        productHTML += '<a href="'+product.url +'">';
        productHTML += '<image src="'+product.featured_image +'" />';
        productHTML += product.title+'<br />';
        productHTML += '<strong>'+price+'</strong>';
        productHTML += '</a>';

      
      	jQuery(this).html(productHTML).fadeIn(1000);

    });
    
    
  });
</script>

upsell-modal.scss

.upsell-wrapper {

  z-index: 99999;
  background: rgba(0,0,0,.8);
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  
}

.upsell-modal {
  
    position: fixed;
    left: 50%;
    top: 50%;
    height: 450px;
    width: 1000px;
    margin: -225px 0 0 -500px;
    background: #fff;
    box-sizing: border-box;
    padding: 20px;

}

strong {
  font-weight: bold;
  font-size: 21px;
  text-transform: uppercase;
  color: #000;
}

p {
  font-size: 13px;
  color: #000;
}
.modal-close {
  position: absolute;
  right: 5px;
  top: 5px;
  text-align: right;
  width: 100%;
}

.modal-close a {
  color: #000;
  font-size: 13px;
}
/* PRODUCT GRID */

.upsell-grid {
  margin: 0;
  padding:0;
  list-style: none;
}
.upsell-grid li {
  width: 25%;
 float: left;
  box-sizing: border-box;
  padding:5px;
  font-size: 13px;
  text-align: center;
}
.upsell-grid li strong{
 font-size: 13px; 
}

/* BUTTONS */

.upsell-buttons {
  text-align: right;
  padding-top: 20px;
}
.no-thanks {
	font-size: 13px;
  color: #000;
  text-decoration: underline;
  margin-right: 28px;
}
.upsell-checkout, .upsell-checkout:hover {
	font-size: 13px;
  color: #fff;
  text-decoration: none;
  background: #000;
  padding: 5px 10px;tt
}

@media (max-width: 767px) {  
  // mobile
  .upsell-wrapper {
    z-index: 99999;
    background: rgba(0,0,0,.8);
    position: absolute !important;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
  }
  .upsell-modal {
      position: absolute;
      left: 50%;
      top: 50%;
      height: 450px;
      width: 300px;
      margin: -225px 0 0 -150px;
      background: #fff;
      box-sizing: border-box;
      padding: 20px;

  }
  .upsell-grid li {
    width: 100%;
    float: left;
    box-sizing: border-box;
    padding:5px;
    font-size: 13px;
    text-align: center;
  }
}

Hello, congratulations for fantastic script!

Hello,

I would like to know how I can display on JavaScript the variant id of the selected product.

I have made several tests without success.
My objective is to be able to add a buy button in the modal of the cart and it is necessary to identify the variant id of the product:

productHTML += '<form action="/cart/add" method="post"><div style="display:none;"><select name="id" id="id"><option value=' **VARIANT ID **** +'></option></select></div><button class="btn default esc_addOfferProduct" type="submit" name="add" >Add</button></form>';

thanks for help.