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In this video.

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Let's talk about block scope.

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So let me comment.

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This one's.

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Copy this one down here.

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I'm going to be as block scope in JavaScript.

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BLOCK scope refers to the visibility of variables within a code block, and the code block is a set

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of carry braces that encloses one or more statements.

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So let's see.

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So let's declare a variable.

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Let's.

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H equal to 30.

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And now let's use if statement to create code block and here we go if and then my code block so whatever

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I declare inside the code block, it becomes what my block scope let's see.

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So let's say that if the age above because this in a global scope I can access it here.

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So if.

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So if H is.

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More than 18 years and we can say that you are old enough.

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So let's also declare a variable core message which is equal to you.

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Are old enough.

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Great.

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And now we can console.log the message.

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And that, so let's save it.

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And now indeed you are old enough, but here is a clue.

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Remember that we have declared a variable called age in a global scope and line number 31.

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We also declare a variable called message inside a code block.

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So now this variable is in a block scope.

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I cannot access this outside my block scope.

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Let's see if I try to console that, log the message inside my code block.

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Let's see I get an error.

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This means that this message is in scope to this code block here, but if I try to access it, I can

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still access it because it is in a global scope.