How do I define a function in JavaScript?

How do I define a function in JavaScript?

To define a function in JavaScript, you can use the function keyword followed by the function name and parentheses. For example:

function myFunction() {
    // function body
}

Can you show me an example with parameters?

Sure! Here's an example of a function that takes parameters:

function greet(name) {
    return 'Hello, ' + name + '!';
}

You can call it like this: greet('Alice'); which will return 'Hello, Alice!'.

What about arrow functions?

Arrow functions are a more concise way to write functions in JavaScript. Here's an example:

const greet = (name) => 'Hello, ' + name + '!';

You can use it the same way: greet('Bob');.

Are there any differences between regular functions and arrow functions?

Yes, there are a few key differences. Arrow functions do not have their own 'this' context, which can affect how they behave in certain situations, especially in methods and callbacks.