What methods do you know for creating functions…

There are several ways to create functions in JavaScript, each with its own features:

Function Declarations: The classic way of creating a function. They are hoisted to the top of their scope, allowing them to be called before their declaration.
```
// Function declaration using function
function greet(name) {
  return "Hello, " + name + "!";
}
```
Function Expressions: A function is created as part of an expression and assigned to a variable. They are not hoisted in the same way as function declarations.
```
// Function expression
const greet = function(name) {
  return "Hello, " + name + "!";
};
```

Arrow Functions: A shortened syntax for function expressions. They differ from traditional functions in their handling of this and do not have their own arguments object.

// Arrow function
const greet = (name) => {
  return "Hello, " + name + "!";
};

// Shorter syntax with implicit return
const greetShort = (name) => "Hello, " + name + "!";

Constructor Functions: Used for creating objects. Called with the new keyword.

// Constructor function
function Person(name, age) {
  this.name = name;
  this.age = age;
}

// Creating an instance using the constructor
const person1 = new Person("Alexey", 30);

Class Methods: In classes (syntactic sugar over prototype inheritance), functions are defined as methods.

// Class declaration with a method
class Greeter {
  greet(name) {
    return "Hello, " + name + "!";
  }
}

// Creating an instance and calling the method
const greeter = new Greeter();
const message = greeter.greet("World");

Immediately Invoked Function Expressions (IIFE): A function expression that is executed immediately after creation. Often used to create a local scope.
```
// IIFE
(function() {
  // Code inside IIFE
  console.log("This function runs immediately!");
})();
```

Each method has its pros and cons, and the choice depends on the specific task and context.

What methods do you know for creating functions?