pre populate checkout form fields

Hi

Is there any way to be able to edit a product using my own javascript so that the product image (or preview) changes according to the users choices, and then send that data to the checkout form fields.  I hope that makes sense.

Basically, I want to sell personalised images.  But I want the user to be able to choose all the different parts of the image (and colours).  As they are doing this, I want the preview to update automatically with their choices.  Then, when they click on the checkout button, I would like all the personalised data to pre populate the correct field in the checkout.

Thank you in advance for any help with this

No, you cannot do this on Squarespace. The nearest thing that exists is to associate a different image with each variant. The correct variant can then be shown in the checkout.

Thank you for taking the time to answer.  Much appreciated 🙂