Types of Functions in JavaScript with example and it's Importance.

JavaScript functions are one of the most powerful features of the language. Over time, different types of functions were introduced to solve specific problems and improve code quality, readability, and flexibility. So here are the major types of JavaScript functions, their importance, and how they evolved step by step. 1. Function Declaration: Function declarations are the most basic way to define a function. function greet(name) { return "Hello " + name; } Importance: Simple and easy to understand Hoisted, so they can be used before declaration Ideal for general-purpose reusable logic Why it existed: JavaScript initially needed a straightforward way to define reusable blocks of code. 2. Function Expression: A function expression stores a function inside a variable. const greet = function(name) { return "Hello " + name; }; Importance: Functions can be treated as values Can be passed as arguments or returned from other functions Why it evolved: Developers needed more flexibility to use