This challenge should have been pretty easy.

You already learned how to create a random number between two values in

stage three of this course.

However, now you're using a function that accepts arguments.

I didn't put anything but

the formula in the random.js file, so you had to remember how to create a function.

Because the function should produce a random value between two numbers,

we need to add two parameters to the function.

Then I'll just move the formula into our function and

place the parameters where they need to go.

The upper value goes here, and the lower value is here, and here.

I'll assign the result to a variable.

Then we'll return that variable and exit the function.

You can make this code even more compact.

You don't need to assign the formula to a variable and then return the variable.

Because the formula produces a value,

you can simply return the results of the formula like this.

Why can you do this?

Well, let's look at this formula.

It takes some information, the two variables and

runs it through a couple of JavaScript methods and does some math.

All of this code evaluates, as programmers say, to a single value, the random number.

All a return statement does is return a value.

It doesn't matter where that value comes from.

It can be stored in a variable, or it can just be the result of another function, or

some mathematical operations, as it is in this case.

Okay, now it's time to test this.

I'll just call the function a few times, and

print the results to the console each time.

[BLANK_AUDIO]

I'll save the file and preview the work space.

I'll open the console.

Looking good, some random numbers.

I'll reload.

More random numbers.

And you can see they're between the values that I specified in my code.

As you'll see in the next video, however, there is a problem with this function.

And you'll need to fix it.