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Now to conclude his introduction into JavaScript.

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I want to dive back into operations.

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We can perform with our values,

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like to subtraction we're doing here. And specifically,

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I also want to explore some operations.

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We can perform on strings as these will be operations,

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you will be doing frequently in Java script and asked is,

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will be operations. We will also need throughout,

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this course.

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Now let's come back to mathematical operations in general,

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and actually,

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therefore I'll add a brand new JavaScript file operations

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JS,

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just so did we have one file that contains a summary of all

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those operations basically.

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And now in index HTML I'll quickly import or link to this

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operations JS file.

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Now, I did,

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of course already talk about the general math operations you

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can perform.

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And that of course would be if I just console log a bunch of

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results that you can add values with the plus operator that

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you can subtract values with the minus operator.

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That you can also multiply values with this asterisk

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multiplication operator and that,

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you can divide values with this forward slash and of course,

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we could be storing all those results here in extra

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variables,

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or we just direct the output them with help of console log

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here.

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If we never need the results anywhere else in this code,

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as it's the case here since does this just there for demo

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purposes, that's why I'm not using any variables here.

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So if an our save that,

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we can see this output here in the console.

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And of course we see the expected results here, and please

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note that the last result here actually has a decimal place.

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It's two dot five, not just two or three.

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And that of course is probably what you expected,

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but it is worth pointing out that these two different kinds

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of numbers,

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which be see here numbers without decimal places and numbers

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with decimal places technically have different names.

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They are kind of different types of values.

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Even though they're both numbers,

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we call numbers without decimal places, integer numbers,

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and we call numbers with decimal places,

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floating point numbers or short floats.

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We call these numbers floats.

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And that's just something you can keep in the back of your

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mind since that is sometimes important.

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And you will sometimes hear these terms.