What Are Higher-order Functions? Can You Provide An Example?

Asked a month ago
Answer 1
Viewed 63
0

Higher-order functions are special types of functions in JavaScript. They can do two things:

Higher-order Functions

  • Take other functions as arguments.
  • Return a function as a result.

This makes them very powerful and flexible.

Example:

Let’s say we have a function called greet. It prints a greeting message.

function greet(name) {
  return `Hello, ${name}!`;
}

Now, we can create a higher-order function called makeGreeting. It takes a function and a name. It uses the function to create a greeting.

function makeGreeting(greetingFunction, name) {
  return greetingFunction(name);
}

We can use makeGreeting like this:

console.log(makeGreeting(greet, "Alice")); // This will print: Hello, Alice

So, makeGreeting is a higher-order function because it takes another function (greet) as an input.

 Read Also : What are the key topics you will learn from the JavaScript syllabus?

Answered a month ago Anonymous Anonymous