JavaScript Basics: Doing Math Code Challenge, What's Wrong With My Code??

Stu;

You need to use parenthesis in your math formula.

If you recall 100 - 5 * 6 is mathematically different from 100 - (5 * 6).

Hope it helps.

Ken

Try this:

var profit = salesTotal - (wholeSalePrice * quantity);

Hi Stu Cowley

JavaScript is very picky -- variables are case sensitive: the variable wholesalePrice is not the same as the variable wholeSalePrice. Check out your code and I think you will see what I mean.

I got the exact same problem as Stu had. At first, I was quite certain I did not change the variable name in line 1, it just seemed to have changed just by clicking the "Next task" button. However, when I encountered the error message about task 1 failing, I may have changed the variable name without really thinking about it.

I have tried redoing these tasks several times to see if I could recreate the condition that caused the error, and it seems likely that I have actually changed the variable name. But, there is still one problem with the challenge. Having passed task 1, and just declaring the profit variable in task 2, will cause task 1 to fail. Going back to task one with the exact same code, and task 1 will again pass.

I think there is something odd in the code checker, since task 1 should not fail as long at the salesTotal variable is calculated correctly. Or am I wrong? It's quite late here, just as it was for Stu :)

Ok guys,

So I have had a crack once again at this challenge, but I am still getting that annoying "Oops! It looks like Task 1 is no longer passing." message coming up when I click on "Check Work"

Here is the code I am using with the help you've all given me.

var wholeSalePrice = 5.45;
var retailPrice = 9.99;
var quantity = 47;
var salesTotal = retailPrice * quantity;
var profit = salesTotal - (wholeSalePrice * quantity); 

No doubt I am missing something dumb once again.

Stu : )

Hey Dave McFarland

Thanks for that, I'm not sure why I changed the variable name to be honest, it was quite late when I was doing it so that might explain it, haha.

Just wanted to quickly say thanks for the way that you have done your videos in JavaScript Basics. I have never really been able to get a good grasp on the language but now I am finding that I am : )

Cheers,

Stu :)

I just ran into trouble with this task. At first I tried this line of code:

var wholesalePrice = 5.45;
var retailPrice = 9.99;
var quantity = 47;
var salesTotal = retailPrice * quantity;
var profit = retailPrice - wholesalePrice * quantity;

Basically I have written it out in the same way I would work it out on a calculator. Could somebody please explain why the above is different to:

var wholesalePrice = 5.45;
var retailPrice = 9.99;
var quantity = 47;
var salesTotal = retailPrice * quantity;
var profit = quantity * (retailPrice - wholesalePrice);

To me, these two calculations have the same result. Am i missing something here?

Thanks in advance for any help and thanks to Dave for making this course, I think you've done a great job.

I think the question is formated in a way that many people makes a misstake here, the correct answer is:

var wholesalePrice = 5.45;
var retailPrice = 9.99;
var quantity = 47;
var salesTotal = retailPrice * quantity;
var profit = salesTotal - (wholesalePrice *quantity);

Just got it, wholesale, is one work, so it should be entered as "wholesale". Cool :)

I've done it like this

var profit = 9.99 * 47 - 5.45 * 47;

and it works for me !

var wholesalePrice = 5.45; var retailPrice = 9.99; var quantity = 47; var salesTotal = 9.99 * 47; var profit = (9.99-5.45)*47

var profit = 9.99 * 47 - 5.45 * 47; this one works.

Complete the variable declaration by adding the keyword that does not allow the value stored in price to change:

var retailPrice = 9.99

Is not the correct answer. It the one below that I just discovered.

____ price = 9.99

const is the variable name.