How do I create custom functions in JavaScript?

How do I create custom functions in JavaScript?

Creating custom functions in JavaScript is simple! You can define a function using the function keyword, followed by a name, parentheses, and curly braces. For example:

function myFunction() {
    console.log('Hello, World!');
}

You can then call this function by using its name followed by parentheses: myFunction();.

Can you show me how to pass parameters to a function?

Sure! You can pass parameters to a function by including them in the parentheses. Here's an example:

function greet(name) {
    console.log('Hello, ' + name + '!');
}

greet('Alice'); // Outputs: Hello, Alice!

What if I want to return a value from a function?

You can return a value using the return statement. For example:

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

let sum = add(5, 3); // sum will be 8

Are there any best practices for naming functions?

Yes! It's best to use descriptive names that indicate what the function does, and to use camelCase for multi-word names, like calculateTotalPrice.