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In the previous lesson, we saw how we can start building out that random sequence where when we hit

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the start button, we see that one of the squares lights up.

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And now in this lesson, I'm going to show you how you can continue to build out that sequence to run

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and light up all of the squares.

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And the secret is we're going to use another set time out.

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So this time out is going to be sitting within the other set time out.

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So setting up a function that's going to run on this time out and this time out is going to initiate

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another sequence.

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So we're going to run that same function with the value of no inside of itself.

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And that will continue to loop through that sequence.

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And we're only going to break out of running the sequence when we're returning this value whenever the

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value of NUM is less than zero.

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So let's try that out and open that up in our browser, go back out and refresh it.

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And when we hit start, we see that it runs that one item and then we can start building out our own

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sequence.

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Now, let's update this value to five and see what happens.

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So refresh hit start.

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So we've got one, two, three, four, five colors.

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We built out our array, the computer array, using the five colors, using the run sequence.

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So we're ready to move on to the next step where we can let the player match that sequence that was

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built out and check to see if the player actually matched the sequence and move them up a level and

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continue to play the gameplay.

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Letting a function run within itself is called recursion in JavaScript, and this is a great way to

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practice and get more comfortable with looping through functions and using recursion in JavaScript.

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So go ahead and try it out for yourself.