damian-paymentrequestbutton

[strange moat]

I would say not really, because you'll find that if you try to then call paymentRequest.show() from a different callback(like if you call your backend and then parse a response) then the browser will refuse to open the popup(to prevent abuse)

but you can do simple checks within the callback from the click, example https://jsfiddle.net/v7wL7pbu/