8 Types of JavaScript Functions

Learn about the different types of JavaScript functions, including anonymous functions, arrow functions, and more

Photo by Mohammad Rahmani on Unsplash

Did you know JavaScript functions are the cornerstone of modern web development?

As one of the most versatile features of this programming language, JavaScript functions enable developers to create efficient, reusable, and organized code.

In this guide, we’ll dive into the eight essential types of JavaScript functions that every developer should master.

1. Function Declarations: The Foundation of JavaScript

Definition and Syntax

Function declarations are one of the most common and straightforward ways to define a function. These are defined using the function keyword:

function functionName(parameters) {
  // function body
}

Key Features:

• Hoisting: Function declarations are hoisted, so you can call them before they are defined in your code.

Example:

greet("John"); // Output: "Hello, John!"
function greet(name) {
  console.log("Hello, " + name + "!");
}