Learn the basics about functions in JavaScript: Basic theory about functions in JavaScript. Learn the syntax on how to create functions. How to call functions. What are function parameters and the ...

This detailed tutorial shows how to implement pure functions in JavaScript that are deterministic and referentially transparent, and create no side effects.

JavaScript is a flexible language, allowing for all sorts of styles and programming paradigms. Although this breadth sometimes comes at a cost to readability or consistency across a code base, it ...

‘Higher-order functions’ is a fancy term for functions that take other functions as arguments or that return functions. Very powerful!

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 WinJS project I’m working on, and the heavy ...