Is it possible to do this through wix code? I can not stand using the paypal checkout buttons and want to add html code to buttons I have already created or paste HTML code from paypal and paste them to buttons on my site (along with stripe html codes.)
You can definitely write code that will run when an image or button is clicked. Pasting HTML from Paypal will probably not work though. A better direction would be to write code that uses Paypal’s API. You might want to start by reading this article: Velo: Accessing 3rd-Party Services with the Fetch API | Help Center | Wix.com.