Shopify Add To Cart form for sending visitors direct to the cart from another website
Send people straight to a Shopify cart from another website with a quick Add To cart form like the one below. You'll need to get the variant ID.
<form action="http://shop.myshopify.com/cart/add" method="post" class="addtocartform"> <input type="hidden" id="" name="id" value="enterVariantIdHere"> <button type="submit" name="add" class="blocklink buybutton">Book now</button> </form>
Using this method rather than the permalink method means visitors can adjust quantities in their cart.
We used this on the recent 40th birthday site for Leiths Cookery School.