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Now that we covered some important basics

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about variables, I want you to practice

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what we learnt up to this point.

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And I want you to take this 32, value you this number

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and store it in a variable instead of using it here

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in the place where we need it.

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Instead, store it in a variable

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at the beginning of our script,

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and then use that variable down here.

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Maybe also we'll use two alerts

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that then work with that variable

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to make adding that variable a bit more useful.

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Now, one important hint,

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which you will need for creating this variable,

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this value 32 could be a age,

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but that might matter for picking a proper variable name.

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That's my challenge for you, add this new variable,

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I'll give you a short pause, to pause the video

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and try this on your own

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thereafter, we'll do this together.

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So, did you succeed?

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Let's do this together.

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We wanna create a second variable.

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And I mentioned that you should add it somewhere

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at the beginning of this script,

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though I wanna emphasize that you can add the variables

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anywhere in your script.

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You can add them at the end,

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in between and at the beginning.

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Now at the end doesn't make sense here

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since I wanna use it in my code.

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So adding the variable thereafter would not work

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since the code is executed from top to bottom.

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Adding it in the middle or maybe a right before I plan

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on using it would work.

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But since my instruction for you

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was to add it at the beginning of the script,

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I wanna add it here or maybe after greeting text, up to you.

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I will add it right at the top.

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Now we did learn that we can now add a new variable

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with the let keyword.

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That's what we used before as well.

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And then we need to pick a name.

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That name as you learnt is up to you,

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but has to follow certain rules and conventions

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and which name we choose

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depends on what that value represents.

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And here, I'm assuming it represents my age.

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So I will name the variable age.

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Now that's my name and the interesting thing about this name

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of course is that, unlike greeting text,

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this has no capital characters inside of it

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because that's not a must do.

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It's only a must to do if your variable name

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actually consists of multiple words,

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sometimes you might need that

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to properly describe the value.

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In the case of age, the word age is enough to describe that.

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Guess what, a number that represents an age

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is stored in there.

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We could of course also choose user age instead,

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and then write it like this, but that's totally optional.

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It would also be fine though,

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but here I'll go for age and then store 32 as a value.

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And I will also add that semi-colon,

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since that is the style I will use in this course,

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and that is a style you will see a lot out there in general.

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And now that this variable was created, we can use it.

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We can use it here for the alert

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and output age by referencing it.

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So by basically telling JavaScript

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and therefore the browser, "Hey, please show an alert"

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and the content of the alert

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should be the value stored in age.

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That's what we're telling JavaScript here.

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And of course we can also output multiple alerts

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for this age like this.

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And if I save that, if I reload this page, I get high IMAX,

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twice, and then that changed text.

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And then there after, I get my age, 32 being output twice.

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And of course we could now also change

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that variable somewhere

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and assign a new value again with the equal sign,

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as we're doing it with creating text.

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And that's something you can do,

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but not something you need to do here.

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And that's now another variable introduced.