At its core, a higher-order function is just a function that accepts a function as an argument or returns a function. This is possible in JavaScript thanks to first-class functions, which means ...

JavaScript secret No. 2: Higher-order functions In functional programming languages, functions are first-class members. They can be passed around like any other value, which opens up interesting ...

Higher-order functions take other functions as arguments or return ... and thus are a big no-no in the world of functional programming. The following JavaScript code violates this principle because it ...