How do I use functions in JavaScript?

How do I use functions in JavaScript?

In JavaScript, functions are blocks of code designed to perform a particular task. You can define a function using the function keyword.

Can you show me an example of a simple function?

Sure! Here's a simple function that adds two numbers:

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

You can call it like this: add(2, 3); which will return 5.

What about parameters and return values?

Parameters are the values you pass into a function, and the return value is what the function outputs. For example, in the add function, a and b are parameters, and the result of a + b is the return value.

How do I handle multiple parameters?

You can simply add more parameters in the function definition, separated by commas. For example:

function multiply(a, b, c) {
    return a * b * c;
}

This function takes three parameters.