What is Higher Order Function in JavaScript ?

A higher-order function is a function that can accept a function as one of its parameters and it can also return a function as its return value or it can do both return as well as accept a function. A higher-order function can also take as well as return other types of values but it either has to take a function as a parameter or return a function as its return value with them. It can be declared using any syntax available in JavaScript to declare functions.

Example: The below code explains how you can declare higher-order functions in JavaScript.

Javascript

function higherOrderFunc(a){
    return function(b){
        console.log(a*b)
    }
}
higherOrderFunc(3)(53);

Output

159