Learn how to create a callback function in JavaScript and use it for various purposes, such as asynchronous programming, modularity, flexibility, and custom events.

💡Tip: In JavaScript, functions can be stored in variables, passed into other functions as arguments, passed out of functions as return values, and constructed at run-time. The syntax of the function ...

Those are examples of higher-order functions that accept functions as arguments, but plenty of them return functions as well. If you’ve ever seen a function call that has two sets of parentheses ...

Second, when there are no braces, arrow functions have an implicit return, i.e., they automatically return the result of the last expression! This is the only situation in which a JavaScript function ...

Instead of returning the value passed in immediately, we’ll return a function that returns the value. ... JavaScript tutorial: Add face detection to your web app. Jun 20, 2019 5 mins.

Partially Applied Functions In JavaScript 20 July, 2012. It was a Friday. I’m finding myself doing more and more functional programming with JavaScript lately – especially in recent days with this ...