What you should know about javascript functions.

Here’s a comprehensive guide on JavaScript functions that covers essential concepts, from the basics to advanced usage:

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1. What is a Function in JavaScript?

A function is a block of reusable code designed to perform a specific task. Functions allow you to organize and structure your code efficiently, making it more modular and easier to maintain.

Syntax:

function functionName(parameters) {
  // Code to be executed
}

Example:

function greet(name) {
  console.log(`Hello, ${name}!`);
}
greet('Alice'); // Output: Hello, Alice!

2. Function Types in JavaScript

JavaScript offers several ways to define functions:

a. Function Declaration

A standard way to define a function using the function keyword.

Example:

function add(a, b) {
  return a + b;
}

b. Function Expression

A function can be assigned to a variable, and this is called a function expression.