How Can I add a second function (onclick perhaps?) to a non-editable cta (Add to Cart) button?

Site URL: https://www.spacescan3d.com/create-your-virtual-tour/p/style-01-36t23

Hi everyone. I have seen a couple of very similar requests (I think) on here and @creedon has been successful in nearly all of them. I have a commerce site and I've been attempting to make it do some things that it almost does on it's own but not quite.

The first, for now, is that when the "add to cart" button (which I have customized to be "Add to Quote and Continue"), aside from adding the item to the cart, needs to (I want it to) return the user to the products page (link back to https://www.spacescan3d.com/create-your-virtual-tour ) and replace the image of the item that was selected with another (to indicate that it has already been chosen).

Two things: 1.) I know enough about code to know how to explain what I want and how to follow directions...that's it though. 2.) If I posted this incorrectly, I'm sorry--please direct me to the proper location--and thank you all in advance for any suggestions you can give me!

Let me see if I understand the sequence of events.

Site visitor is on Create Your Virtual Tour page (product grid page).

Clicks on one of the products there, for example.

Is taken to the product detail page.

Visitor makes various choices for the product and clicks the add to cart button.

Is taken back to the Create Your Virtual Tour page where the image above is updated to indicate that the product is selected.

Does that sound about right?

Although I don't know for sure that this can be done. It sounds like you might be able to use localStorage to track the state of the user actions across pages. Web pages are stateless. So when the sequence of events is completed successfully the code would update the image for the product.

One piece of the puzzle has been addressed with the following.

Obviously more pieces would need to be built on top to potentially make your desired effect work.

Omg yes you got it! That is exactly what I need to do, thank you! There is more but this is plenty to get started--Thank you Thank Thank you! Have you heard of any workarounds with code injection or code blocks if this isn't the way to go? 

2 minutes ago, OilyBoyd said:

Omg yes you got it! That is exactly what I need to do, thank you! There is more but this is plenty to get started--Thank you Thank Thank you! Have you heard of any workarounds with code injection or code blocks if this isn't the way to go? 

Woops misunderstood your first part about local storage, disregard question about workarounds. I will look into all of this thank you

One last thing--do you by any chance hire out to do things like this? The more I dig into he more I'm afraid I don't know enough to implement it myself (I tried 99 Designs and I was not convinced that I would find someone with the right skill set). Or is there someone you can recommend?

I'll DM you.