Original subtitles

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

of JavaScript variables.

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

your code file at the bottom.

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

We have a variable a which holds the value three and the variable B which holds the value eight.

Now you have to write some code on lines seven eight and nine so that the values are switched around

so that a holds eight instead and b holds three The way I like to think about it is let's say you had

two buckets right bucket and Bucket B a hold some sand and b hold some water.

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

That's basically your goal for this challenge.

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

Now first you should not change any of the existing code so don't touch this part and don't touch this

pope.

You are just allowed to write in these three lines.

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

You can't just simply say well a equals eight and b equals three.

This is not a valid solution.

Now the final rule is you're not allowed to read declare the variables either so you can't for example

just say Well now a equals eight and b equals three.

This is also wrong.

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

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

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

use this playground to test out your code.

So for example at the moment if I just click run then it's going to log that a is 3 and B is 8.

Now what we want to happen is when we hit run it should say the opposite a is a and b is three.

So how we play around with the code and use the rappel it to test out your code and your hypotheses

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

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

and you can click on checked solution to see if you got the answer right now.

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

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