What are function parameters in JavaScript?

What are function parameters in JavaScript?

Function parameters are variables listed as part of a function's definition. They allow you to pass values into functions.

Can you give me an example of a function with parameters?

Sure! Here's a simple example:

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

In this case, name is a parameter.

What happens if I don't pass any arguments to a function?

If you don't pass any arguments, the parameters will be undefined by default. For example, greet() would return Hello, undefined!.

Can I have multiple parameters in a function?

Yes, you can have multiple parameters! For example:

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

Here, a and b are both parameters.