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JavaScript

Posted by Brianna Land
Brianna Land
3,577 Points

Help on Javascript code challenge!

I am completely stuck on the Getting and Setting code challenge in the JavaScript Foundations course. I've tried everything that I can think of. It could be that I'm reading the question wrong since I think it is written strangely. Help?!

"The variable 'thirdElementInArray' was supposed to be the third element in the array. Fix the code so it 'thirdElementInArray' is the actual third element in the array."

<!DOCTYPE html> <html lang="en"> <head> <title> JavaScript Foundations: Arrays</title> <style> html { background: #FAFAFA; font-family: sans-serif; } </style> </head> <body> <h1>JavaScript Foundations</h1> <h2>Arrays: Getting and Setting</h2> <script> var myArray = ["sugar", "rush", "fix", "it", 3.14, 42]; var thirdElementInArray = myArray[3]; </script> </body> </html>

7 Answers

Laurel Lawrence
Laurel Lawrence
8,031 Points
Laurel Lawrence
Laurel Lawrence
8,031 Points

var myArray = ["sugar", "rush", "fix", "thirdElementInArray", 3.14, 42]; var thirdElementInArray = myArray[2];

Kevin McNamara
Kevin McNamara
4,171 Points

EVERYONE - Laurel has the right Answer - var myArray = ["sugar", "rush", "fix", "thirdElementInArray", 3.14, 42]; var thirdElementInArray = myArray[2];

Gina Bégin
Gina Bégin
Courses Plus Student 8,613 Points

I'm still not understanding this. I get that you start with counting at 0, so in Laurel's example, you'd have:

sugar = 0, rush = 1, fix = 2, thirdElementinArray = 3

So why would "myArray[2]" call "thirdElementinArray"? It seems [2] should actually call "fix"?

I mean, yes, it works, but I do not understand why...?

Kayci Barnett
Kayci Barnett
5,349 Points
Kayci Barnett
Kayci Barnett
5,349 Points

okay I finally figured it out. You don't have to add the string "thirdElement" into the array. they want you to change the number in myArray[]; so it gets the third element. I had to write it out to finally get it.

[0] is the first element in an array. [1] is the second element in an array, [2] is the third element, [3] is the fourth element.

Pedro Cabral
seal-mask
.a{fill-rule:evenodd;}techdegree
Pedro Cabral
Full Stack JavaScript Techdegree Student 23,916 Points
Pedro Cabral
.a{fill-rule:evenodd;}techdegree
Pedro Cabral
Full Stack JavaScript Techdegree Student 23,916 Points

The index starts at 0, so myArray[3] is actually the fourth element in the array. Ps: You tagged this under PHP.

Brianna Land
Brianna Land
3,577 Points
Brianna Land
Brianna Land
3,577 Points

Thanks, Pedro. Not sure how it ended up under PHP. Meant to tag JavaScript. It's fixed now. :-)

I realize that the index starts at 0, but I guess I'm not understanding what I need to change. Do I change the "it" element in the original code? Or do I write a new line like this to change it- myArray[3] = "thirdElementInArray"

Not sure what I'm missing.

Pedro Cabral
.a{fill-rule:evenodd;}techdegree
Pedro Cabral
Full Stack JavaScript Techdegree Student 23,916 Points

var myArray = ["sugar", "rush", "fix", "it", 3.14, 42]; var thirdElementInArray = myArray[3];

The variable is being assigned to the element "it" because myArray[3] corresponds to the 4th position in the array. myArray[0] will be "sugar" myArray[1] will be "rush" and so on...

They want you to retrieve the actual third element which is the string "fix".

Hope it helps.

Xing En Xiao
Xing En Xiao
3,315 Points
Xing En Xiao
Xing En Xiao
3,315 Points

Confusingly, the first element of array in Javascript is position 0, not position 1 as any reasonable person would expect. That mean for any array, Something[0] is the first element, Something[1] is the second element, Something[2] is the third element and etc. In the quiz, it wants the third element of var thirdElementInArrray. Can you check what position it's setting to now?

Brianna Land
Brianna Land
3,577 Points
Brianna Land
Brianna Land
3,577 Points

Ahhh! I knew it was something with the wording in the question that I wasn't understanding! Thank you very much, Pedro.

Kayci Barnett
Kayci Barnett
5,349 Points
Kayci Barnett
Kayci Barnett
5,349 Points

I'm still having trouble, and I feel like I understand counting from 0. I've tried a couple different things and keep getting bummer. Do they want thirdElement in array to be in the third spot in the array and then change the myArray to 2, but then the bummer says it expected "fix". So then I put the third elementArray after fix and before it, and it still says no. I'm at a loss. var myArray = ["sugar", "rush", "fix", 'thirdElementInArray', "it", 3.14, 42]; var thirdElementInArray = myArray[3];