🧠 Function Overloading in JavaScript

1️⃣ What Happens When We Define Functions with the Same Name

function greet() {
  console.log("Hello, World!");
}

function greet(name) {
  console.log("Hello, " + name);
}

greet();        // Output: Hello, undefined
greet("Ayush");  // Output: Hello, Ayush
    

2️⃣ Simulating Function Overloading Using arguments

function add() {
  if (arguments.length === 2) {
    return arguments[0] + arguments[1];
  } else if (arguments.length === 3) {
    return arguments[0] + arguments[1] + arguments[2];
  } else {
    return "Invalid number of arguments.";
  }
}
    

3️⃣ Using Spread Operator (...args)

function addSpread(...args) {
  if (args.length === 2) {
    return args[0] + args[1];
  } else if (args.length === 3) {
    return args[0] + args[1] + args[2];
  } else {
    return "Invalid number of arguments.";
  }
}