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JavaScript

Posted by Carlos E. Quiroz Rojas
Carlos E. Quiroz Rojas
15,278 Points

Code Challenge Methods: Part 1: Ordering 2 of 2 Java Script

I am Stuck in this code Challenges 2 of 2 I am almos too finish PHP Developer and is few thigs missing

The Question say's: Sort the 'saying2' array, on about line 19, so that the words are listed in length order. The shortest first. Use the 'length' property on the strings in the sort function.

*//<script>
      var saying1 = ["The", "quick", "brown", "fox", "jumps", "over", "the", "lazy", "dog"];
      var saying2 = ["The", "quick", "brown", "fox", "jumped", "over", "the", "lazy", "dog's", "back"];
      saying1.reverse();
      saying2.sort(function (a, b) {
    return saying2.length(a > b);
});
    </script>
*//

when I put check I get this error Bummer! The 'saying2' was 'The,quick,brown,fox,jumped,over,the,lazy,dog's,back' not 'The,fox,the,over,lazy,back,quick,brown,dog's,jumped'.?? is corret or Not?

anthony de alwis
anthony de alwis
4,146 Points
anthony de alwis
anthony de alwis
4,146 Points 
array name.sort(function(a,b){
var x=a.length, y=b.length;
return a-b;
});

that should do it

Deepthi Yakkala
Deepthi Yakkala
3,238 Points

i did same as like this...but it always showing error..can you please help me.

Andrew Chalkley
Andrew Chalkley
Treehouse Guest Teacher
Andrew Chalkley
Andrew Chalkley
Treehouse Guest Teacher

Hey Deepthi Yakkala

Can you paste in your code so we can see it?

Thanks
Andrew

Deepthi Yakkala
Deepthi Yakkala
3,238 Points

sorry..i got it...thanks for the help.

6 Answers

Carlos E. Quiroz Rojas
Carlos E. Quiroz Rojas
15,278 Points
Carlos E. Quiroz Rojas
Carlos E. Quiroz Rojas
15,278 Points

First I want to Thanks for your answer Andrew!!

I am glad you answer because I think you are really cool I watch some of the videos you do and I get good time watching and learning with you

I advance a lot with Java script however some things still I don't know I read and try to get some Ideas from internet to see some diferent code and learn some more but well I think is question of time

I try to make some changes to make the comparison but still I don't get it look here is my code

http://codepen.io/anon/pen/Husmw

and still the same error The 'saying2' was 'The,quick,brown,fox,jumped,over,the,lazy,dog's,back' not 'The,fox,the,over,lazy,back,quick,brown,dog's,jumped'.

I belive is because dog's

p.s.:But Well also I want to tell you I am a Mexican a few time I just Come to live in UK I understand is your birth contry Is very Nice

Kuba Tuscher
Kuba Tuscher
10,722 Points
Kuba Tuscher
Kuba Tuscher
10,722 Points

Hey Carlos,

I just had a problem with the same exercise and thanks to you and Andrew I have been able to solve it. I think what Andrew was meaning to explain is that you simply have to substract two values (using the .length property on the strings) from each other to receive the numerical comparison the compare function (a,b) expects. There is no need for a boolean in the 'return' line. So the only difference between the example in the video and the exercise is that the compare function does not return a - b, but returns the a.length - b.length substraction.

I hope that helps. I tried to explain the best way I could without pasting the answer:)

Regards/Pozdrawiam,

Kuba

Andrew Chalkley
STAFF
Andrew Chalkley
Treehouse Guest Teacher
Andrew Chalkley
Andrew Chalkley
Treehouse Guest Teacher

Hi there,

The return expects a number not a boolean.

So in the example in the video it was a - b when a and b were numbers.

'a' and 'b' are strings so length can be called on 'a' and 'b' and that's what you need to do the comparison on.

Hope that helps.

Regards
Andrew

Carlos E. Quiroz Rojas
Carlos E. Quiroz Rojas
15,278 Points
Carlos E. Quiroz Rojas
Carlos E. Quiroz Rojas
15,278 Points

Boyaaa!!

I did it Thanks a lot Kuba and Andrew... yesterday I was a littel bit confuse by the answer but now it make sense I pass thanks alot

Mr.Q

Andrew Chalkley
STAFF
Andrew Chalkley
Treehouse Guest Teacher
Andrew Chalkley
Andrew Chalkley
Treehouse Guest Teacher

Glad you both got there.

These are new additions to JavaScript Foundations that I added. Hopefully brain teasers like this should help you use the tools you've learnt in previous stages and you can do some interesting things.

Kuba Tuscher
Kuba Tuscher
10,722 Points
Kuba Tuscher
Kuba Tuscher
10,722 Points

Exercises that are not purely analogous and require a little extra bit comparing to the videos/learning material, are always a challenge for us newbies. Some might like this type of exercises, some not, but as long as it is not too complicated it provides in my opinion a really great added value to our learning process. Despite the frustration that arises when I can't solve the exercise straight away;)

So thanks for the good work and I am looking forward to your exercises and courses - so far Jim has been the tutor in the programming vids I have seen. But anyway, all you guys are doing a really great job!

Kuba Tuscher
Kuba Tuscher
10,722 Points
Kuba Tuscher
Kuba Tuscher
10,722 Points

And just one more follow-up:

I have just started the 'Functions' stage in the 'Javasrcipt Foundations' course and I really miss any challenges here. So to sum up: the more coding challenges the better the learning experience!

Andrew Chalkley
Andrew Chalkley
Treehouse Guest Teacher
Andrew Chalkley
Andrew Chalkley
Treehouse Guest Teacher

Kuba Malbek, Chris Akers one of our other developers is helping me add some more challenges to these other stages. It should be added in the coming weeks.

I'm glad you agree "the more coding challenges the better the learning experience!" that's what I was hoping for adding them in to our older content!

Carlos E. Quiroz Rojas
Carlos E. Quiroz Rojas
15,278 Points
Carlos E. Quiroz Rojas
Carlos E. Quiroz Rojas
15,278 Points

Andrew:

So that Means more Code Challenges Nooooooo !!! well that true is the only real way too get and ,make better the skill of coding Thanks Andrew for your hard Work and the team of tree house I really Like keep lerning new stuff!!

Chears!!

James Griffith
James Griffith
4,751 Points
James Griffith
James Griffith
4,751 Points

I have to say that out of all the code challenges in the Web Designer Learning Adventure, this is the only one that completely stumped me (solely-Treehouse-taught newbie here), at least so far. I'm glad this post was here (wouldn't have figured it out without leaving and coming back to it later) and I'm glad you're adding new code challenges, even if I get angry once in a while (or just once)!

I know adding code challenges is a work in progress, but what I'd really like to see is a series of harder challenges (perhaps like this one) at the end of a given stage rather than in the middle, so that I can keep watching the videos with easier coding challenges in between. Also, is there some sort of change log/alert where we can see which stages of which deep dives are getting new challenges added to them? I'd love to go back to previous stages and do them just for the extra practice. Maybe in the content roadmap? (Just a free scholarship member here, so I know I can't be making too many demands!) =P

Kuba Tuscher
Kuba Tuscher
10,722 Points
Kuba Tuscher
Kuba Tuscher
10,722 Points

If you liked this challenge you will definitely like the challenges in the Jquery course tutored by Andrew..;)

Andrew Chalkley
Andrew Chalkley
Treehouse Guest Teacher
Andrew Chalkley
Andrew Chalkley
Treehouse Guest Teacher

I'd really like to see is a series of harder challenges ... at the end

Stay tuned.