How these set of feature : Thread of execution, Execution Context, Lexical Enviroment, Call Stack, Closure, Callback Queue, Event Loop, Promise, Microtask, Web API's, Iterators, Generators Allow us to handle async business logic to look like reading a chat. One after the another. https://github.com/eulier1/hard-part-... Notes : https://docs.google.com/document/d/1w... Course : https://frontendmasters.com/courses/j... . . . . . . . . #model #business #communication #core #concept #transaction #iterator #data #collection #async #value #javascript #mental