JavaScript treats functions as first-class citizens, meaning you can pass functions as parameters to other functions just like you would any other variable.

If you come to TypeScript (or to JavaScript, for that matter) from another language, it's easy to misunderstand how functions are handled. The major difference between functions in ...

The object-oriented paradigm popularized by languages including Java and C++ has slowly given way to a functional programming approach that is advocated by popular Python libraries and JavaScript ...

Functions can be treated like data, and higher-order functions can take other functions as parameters, enabling the called function to perform the algorithm in the function being passed to it.