Web API Event Call Process is similar with node I/O Process
Web APIs
Web Interfaces
Future Web APIs
New capabilities status
Web apps should be able to do anything iOS/Android/desktop apps can. The members of the cross-company capabilities project want to make it possible for you to build and deliver apps on the open web that have never been possible before. This is a living document and will be updated as features move between states.
https://web.dev/fugu-status/

Current Web APIs
Web APIs
When writing code for the Web, there are a large number of Web APIs available. Below is a list of all the APIs and interfaces (object types) that you may be able to use while developing your Web app or site.
https://developer.mozilla.org/en-US/docs/Web/API


Seonglae Cho