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This lesson, we're going to be focused on comments before we get into variables, and there's going

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to be a brief introduction of variables in this lesson because they are so important.

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So within JavaScript, we use comments and this is typically used by coders in order to provide information

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about what's happening within the code and documentation of what's happening within the code.

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So this is also ignored within the browser.

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So it's not meant for the webpage viewer, it's meant for the developer.

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And so always good practice to comment information.

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And of course, when you come back to it, you're always going to be thankful that you've made those

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comments.

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When you come back to your code after a few months or a few years, you can always pick up on where

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you left off white spaces ignored in JavaScript so you can type white space.

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And the reason for adding in white space again is to make it more readable.

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So the challenge for this lesson is to add comments and you can go ahead and create a variable, as

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we saw before, using a variable name of a and giving value to that variable within the quotes.

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And you can console log that out and then also add in some comments.

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There's some code snippet here where we can see comments being used.

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So as you can see, the comments are within the same statement line.

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So all they do is they appear with the two Ford slashes and then this information that's presented within

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the comment.

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This isn't seen within the application.

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So this is just for developers.

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And then there's also multiline comments.

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So try out both try out the single line comments, create a variable, give it a value, and then you

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can add in a comment there and then console log that out.

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And then you can also have a comment that's multiple lines indicated with the Fortgang strikes and then

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the Asterix the forward again to close off that comment.

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So positivity, try that out and I'll show you the solution.

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You can use the same JS file that we created in the earlier lesson.

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If you don't have one, then just go ahead and create one.

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Link it from your indexed HTML file and then load the index file within your browser in order to see

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the content being rendered out.

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So in this case, we want to set up a variable.

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You can use A or you can use another value in order to name the variable.

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And there's, of course, more on this in the upcoming lesson.

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And then you can type our message within the quotes and then console log out that value so you can see

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when you refresh it that you've got Hello World and then documented by adding in some comments within

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brackets, the comments are going to get grayed out.

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So this was the test.

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And then also you do a multi line comment.

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So the forward and abstracts and you can add in whatever information you want here.

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And when you come back to this file in a few years, then you'll be able to see that why you've added

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in that variable, perhaps.

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And there's also kind of where you are thinking and maybe what you need it to still do within the application,

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within the multiline comment.

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So try that out.