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OK so to make this age calculator I have a simple calc that each time l file was empty.

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I'll fill it in with my standard boiler plate.

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Let's put age calc as the title.

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Let's put a little H-1 again that says

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age calc solution and save it.

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Next we're going to make our javascript file which I will call calc.

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And I'm going to put a alert in there just to make sure it's connected and have my files connected OK

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.

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I go to my calc h t m l and I'll add in my script tag with source equals calc that genius.

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And there's one thing I want to show you here.

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If I save this and I go open it in the browser.

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Notice that I don't see my H-1 yet.

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So it tells me javascript alert connected but my H-1 hasn't loaded as soon as I click OK.

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Then it has loaded.

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And the reason that's happening is that I'm putting my script before this HDMI actually loads.

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So if I wanted that each one to be there I could put the script afterwards and we will talk a lot more

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about where you should put scripts.

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Some of them should go in the head.

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Some of them should go in the body.

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In this case I'm going to put this one down here in the body.

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It doesn't really make a big difference but it is worth knowing that if you put this script up top it's

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going to run first.

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So save this.

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Now let's go finish our logic here.

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So let's start by asking the user for their age so let's do var age because prompt.

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What is your age save.

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And then just to make sure it works.

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Let's do this to an alert just age and that's it.

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Then let's go back and open the file up.

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What is your age.

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10.

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And then just print out 10 an alert.

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OK.

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So next up we're now going to go and add the logic in to figure out how many days someone has spent

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a life.

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So I'm going to make a variable to store that in and I'm going to just call it days.

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So far days equals age times 365 days in a year and save that and then we'll do our alert here.

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So lower.

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And then we wanted to say age plus years is roughly plus the number days for us the word days.

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So this should say whatever the ages years is roughly whatever the days is days.

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So let's test that out.

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Refresh What is your age.

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Three three years is roughly one thousand ninety five days.

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One small adaptation we can make is that this doesn't account for leap years.

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So there is a leap year every four years.

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So the easiest way to include that is just to average that out.

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So instead of multiplying by 365 you multiply by 365 point to five a quarter of a year.

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Now if we try this again let's say that we are 50.

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We now get 50 years is roughly eighteen thousand two hundred sixty two point five days.

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OK.

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So that's all we had to do here.

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So the only real difference between this and the stocker problem is that we're doing some math beforehand