JavaScript Concepts

Functions

Functions are reusable blocks of code in JavaScript, declared in different ways:

Function Declaration: Can be called before it is defined.
Function Expression: Can only be called after it is defined.
Arrow Functions: A concise syntax introduced in ES6.

Examples:


function greet(name) {
    return `Hello, ${name}!`;
}

const greetex = function(name) {
    return `Hello, ${name}!`;
};

const greetar = (name) => `Hello, ${name}!`;

Calling Functions:


console.log(greet("Zoro")); // Output: Hello, Zoro!
console.log(greetex("Bob")); // Output: Hello, Bob!
console.log(greetar("Charlie")); // Output: Hello, Charlie!