What is a Higher Order Function? A higher order function is a function that takes one or more functions as arguments, or returns a function as its result. There are several different types of higher order functions like map and reduce.

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we will delve into what a higher order function is, the benefits of using them, and how to use them in practical applications.

What is a Higher Order Function?

A higher order function is a function that takes one or more functions as arguments, or returns a function as its result.

There are several different types of higher order functions like map and reduce. We will discuss these later in this tutorial. But before that let's first dive deep into what higher order functions are.

// Callback function

function callbackFunction(){

console.log('I am a callback function');

}

// higher order function

function higherOrderFunction(func){

console.log('I am higher order function')

func()

}

higherOrderFunction(callbackFunction);

In the above code higherOrderFunction() is an HOF because we are passing a callback function as a parameter to it.