Introduction to JavaScript Functions

Functions are blocks of code that can be executed multiple times from different parts of your program.

Step 1: Defining a Function

In JavaScript, you can define a function using the function keyword.

function greet(name) {
    console.log(`Hello, ${name}!`);
}

Step 2: Calling a Function

To call a function, you simply need to use its name followed by parentheses.

function greet(name) {
    console.log(`Hello, ${name}!`);
}
greet('John Doe');

Step 3: Working with Function Arguments

Functions can take arguments, which are values passed to the function when it is called.

function add(x, y) {
    return x + y;
}
let result = add(5, 10);
console.log(result);

By following these steps, you can learn how to create and use functions in JavaScript.