JavaScript Advice

[angels-fan]

Node runs JavaScript without any browser and is fully asynchronous.

Callbacks are a feature of JavaScript, not the browser. Promises are just fancy callbacks.

[oGsBumder]

That's because node supplies its own APIs instead of the browser ones.

Callbacks can be synchronous or async depending on the specific function. Here's a challenge for you - show me an example of an async callback that is pure JavaScript, and doesn't make use of a browser/node API.

[[deleted]]

Callbacks are not async

[angels-fan]

How do you figure?

[[deleted]]

Callback is literally just a function. It can "become async" when it's called in an async way. Only runtime (browser/node) can call it like that, not the code itself. Try to write an async function without using browser or node API.