Promises, handlers, and chains are foundations of modern JavaScript, but they can be tricky. Here are four common traps to ...

This is possible in JavaScript thanks to first-class functions ... Those are examples of higher-order functions that accept functions as arguments, but plenty of them return functions as well.

The following code shows a scenario in JavaScript that uses a pure function created as an anonymous function assigned to the variable payEmployee to facilitate paying an employee. The function takes ...