How to start with API's?

Question

Despite knowing what is API, need some advice to start work with that, how usually the websites and web applications uses API's

Answer 1

HTTP request
or
fetch

https://www.sololearn.com/post/174235/?ref=app

https://code.sololearn.com/WO2Pg5Gb9T56/?ref=app

https://code.sololearn.com/WKKkpq0efxai/?ref=app