[crandycodes]

Asynchronous I/O refers to the fact that all I/O interactions default to being asynchronous in JS, not the fancy new `await` keyword, which is nice, but just sugar around Promises. The result of this default is that makes a best practice into a feature, not something I have to manage as a developer.

[goatlover]

Because of Node or the browser's event loop? It's not like JS was the first language to have a built-in event loop. Visual Basic did exist.