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Let's talk about another type of scope, which is function scope.

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So as usual, let's have some enough room here and let me comment this once and bring the comment down

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here.

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And this one is going to be as a function scope.

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Come up here and save it.

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Great.

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So what is a function scope in JavaScript?

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Function scope refers to the visibility of variables within a function.

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If a variable is inside a code block, it means they are in a block scope.

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For example, if statement and if a variable is inside, a function is being regarded as a function

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scope.

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So let's see.

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So let's declare a function counts.

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Let's say my function.

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And then it go to error function this time around.

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And for this function, let's declare a variable.

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So let's say let x equal to.

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Hello?

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Great.

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So let me call my function here as my function is that when I save it not in display because you are

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not returning anything from this particular function.

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But if I console dot log x let's see.

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I see.

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Hello, i have access to x because this variable is in the functions code because it has been declared

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inside this function.

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So I can access it inside.

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But if I try to console.log the same x outside my function, let's see I get an error.

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Meaning this function.

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Sorry, this variable is not in the global scope but instead is in a function scope.

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And again, even for this one, if I try to console log x before it's been declared.

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Have a look.

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You see, I get x six that cannot access x before initialization because I call the x before initializing

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it.

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That's what you call function scope.