WEBVTT

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All right guys, in the next lesson, I've got a coding exercise for you, and it's meant to test

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your understanding of JavaScript variables.

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Now, when you head over to the next lesson, you'll find a section with the instructions at the top

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and your code file at the bottom.

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Now, the goal is to switch the values that are held in two variables around.

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So to begin, we have a variable a which holds the value 3 and the variable b which holds the

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value 8.

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Now you have to write some code on lines 7, 8 and 9 so that the values are switched around,

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so that a holds 8 instead and b holds 3.

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The way I like to think about it is let's say you had two buckets, right? Bucket a and bucket b. A

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holds some sand and B holds some water.

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How would you get the contents of these two buckets to switch around?

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That's basically your goal for this challenge.

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But there's a couple of rules that you have to follow in order to get the correct answer.

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Now, first, you should not change any of the existing code.

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So don't touch this part and don't touch this part.

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You are just allowed to write in these three lines.

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Now, the second rule is you're not allowed to type any numbers.

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You can't just simply say, well, a = 8 and b = 3.

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This is not a valid solution.

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Now, the final rule is you're not allowed to redeclare the variables either.

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So you can't, for example, just say, well, now a= "8" and b = "3".

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This is also wrong.

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So have a think about how you can solve this challenge given all of these constraints.

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And over here, I've got a code playground's set up for you.

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So when you click on it, you should be taken to the same file where you can write your code and you

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can use this playground to test out your code.

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So, for example, at the moment, if I just click run, then it's going to log that a is 3 and

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b is 8.

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Now, what we want to happen is when we hit run, it should say the opposite.

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a is 8 and b is 3.

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So have a play around with the code and use the Repl.it to test out your code and your hypotheses and

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hit run to see if it actually does what you expect it to.

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And then once you think you've got the solution, then go ahead and write them in your code file here

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and you can click on Check Solution to see if you got the answer right. Now

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once you're done, you can click, continue and I'll talk you through the solution code.

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So head over to the next lesson and start the code challenge.