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A for loop allows us to execute a block of code repeatedly they come in handy if you want the same code

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to run over and over again each time with a different value.

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Let's take a look at an example to illustrate how for loops work.

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The objective of the for loop we create will be to output the values zero to 10 on separate lines in

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our HMO document as shown here

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so let's go ahead and get started.

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The first thing we need to do is declare the variable that will contain our initial values

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we'll call this variable count.

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Now we can create our for loop to do so type the following block of code

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and that's it.

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In this block of code we first established the for loop.

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Next we define the parameters of the for loop.

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We've set the initial value for variable count to 0.

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We then instruct the script that the value should increment by 1 up to a maximum of 10 the document

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dot write functions simply output each value in the loop separated by a line break.

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So let's go ahead and save this file and tested in our web browser to make sure it works and we can

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see here that each value is output it onto a separate line just as we instructed it to do.

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Now let's see what would happen if we were to change the value of our account variable to a different

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value.

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I'll change it to 3 save the file and refresh.

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Now we can see that our initial value starts at 3 and increments up to 10

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we can increase our maximum value by changing 10 to 20 for example.

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And now it'll keep looping until it reaches 20 instead of 10.