How to add payment to the site using node.js from scratch?

Question

JavaScript

Dear all, hello. I have never dealt with writing payment services from scratch before, but I would like to practice. On the site that works under the node, you need to fasten payments by: visa, mastercard, americanExpress, paypal, bitcoins. How can this be implemented? Only through the APIs that these companies provide? Thank you.

Answer 1

1. First, choose the one who provides payment services (payment system). Possibly several different ones.
2. Read their API documentation.
3. Conclude an agreement with them (perhaps this is done in paper form, or perhaps it is enough just to register on their website).
4. Implement according to the documentation. Everything is described in detail there.
5. For common ones, it may very well be that there are ready-made solutions that you just need to file for yourself.