I am trying to replicate a product add-on box one of our partner companies is using. I know there are plugins for this, but we would like to avoid adding more plugins. So far I have the layout worked out, and I have created a "+" icon where they can click to add to cart. The visitor stays on the page when the item is added. I would like to find a better way to do this so it is clear it was added. Preferably, there would be a small message under the button that says, "Added to Cart". I have seen this included in other themes. We are currently using Debut. Below is a screenshot of the box layout.
I know this can be done with Ajax but I am not sure how to incorporate it, or if there is a simpler way to accomplish this. Any suggestions would be greatly appreciated!