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All right welcome back everyone.

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So we take a look at the warning here.

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The warning is that there is this change text variable has already been used.

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Now you'll see that it works perfectly fine.

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So you're probably wondering why on earth would it work.

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And the reason is is that javascript is actually of what kind of patches things together.

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In other programming languages this would completely not work but in javascript they kind of just gloss

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things over.

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And what it does is it just kind of makes it work.

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So there's a couple things if I change this to change text variable one you'll see that it gives me

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a new error saying that this is used out of scope and that's exactly what it means.

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So this this variable you'll see a lot when you're beginning programming and you'll see that it says

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this is use that a scope meaning that this change text variable up here is being referenced outside

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of these curly brackets so these curly brackets are really important in order to change that.

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You just change one here and then you see all the errors go away.

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OK.

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So I wanted to make sure that you know that sometimes when you get an error and it still works that

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is a good thing but you want to make sure that when you do ever ship any kind of code you want to make

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sure that it has error free.

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Because even though it might not make an error in here it could make an error in another browser or

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something like that.

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All right I'll see you guys next tural.