Buy Button Not Rendering on Custom Website - Javascrip Errors

Wanting to integrate shopify products and such into a custom webstie (using shopify’s website not an option). What I understand, it is possible to do? I created a Buy Button and added it to a page and i am getting script errors from unchanged code that shopify generated. Wanting a seamless integration of shopify within our website without user knowing it is a shopify script running.

Though this was supposed to be easy?

I am a long time web developer, but not have tried integrating shopify with asp.net mvc website. Anyone with experience that can offer advice.

Thanks in advance!

same I am looking for now,

if you got the answer then you can share with me also.

Best wishes Wick