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Finally, the course compares how code is written in several different languages, the libraries and frameworks that have grown around them, and the reasons to choose each one.
Now the great thing about it is what it allows us to do is, if we wanted it, call this myFunction 3, 4, 5 times. Not that this is going to be very exciting, but if I save this and then I just go back to the page and reload it, what we'll have is five alert boxes. You can call a function once, you can it call it twice, you can call it a thousand times. It's a great way of creating modular code. You can even have a function call itself. This is a process called recursion, which can allow you to do some very interesting, although that's a subject for another time.
You can have as many functions as you want inside your code. You can have one function call other function, call another function, call another function. In fact, that's the general way that you will start to break up your code. So they let you have a little more control over this code and when it runs. Functions let you break apart your code into more manageable pieces, but we can take them a little further. We also want them to be able to pass information back to us, and we want to pass information into the functions when they run. So let's see that next.
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