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JavaScript

Posted by Beth Stranz
Beth Stranz
3,400 Points

How do I complete part 1 of this challenge?

http://teamtreehouse.com/library/javascript-foundations/arrays/methods-part-3-2

Challenge question says: ''Challenge Task 1 of 3–On line 18, set the variable 'saying' to the concatenation of the 'first' and 'second' arrays with the word "dog"."

<script>
      var first =  ["The", "quick", "brown", "fox", "jumps"]
      var second =  ["over", "the", "lazy"];
      var saying = first; 
      var shortSaying = saying;
      var sayingString = saying;
    </script>

So I changed line 18 to: var saying = first.join(' ') + ' ' + second.join(' ') + ' dog';

This returns the correct phrase "The quick brown fox jumps over the lazy dog".

Is this a bug? b/c all I get are error messages, such as: "Bummer! There was an error with your code: TypeError: 'undefined' is not a function (evaluating 'window.saying.join(" ")')"

(window does not even appear anywhere in the code...)

(PS. Does anyone know how to add an image here from my desktop?)

2 Answers

Beth Stranz
Beth Stranz
3,400 Points

Here is the answer: 

var saying = first.concat(second,"dog");

You can read more here: https://teamtreehouse.com/forum/methods-part-3-challenge-task-1-of-3-on-line-18-set-the-variable-saying-to-the-concatenation-of-the-first-and-second-arrays-with-the-word-dog

Jon Benson
Jon Benson
12,168 Points
Jon Benson
Jon Benson
12,168 Points

Hi Beth,

Don't know if you are still working on this You don't need to use the first.join operator. Declare the variable as a concatenation of the two arrays, which are already labeled, and concatenate them with dog. Hope this helps.

Jon Benson
Jon Benson
12,168 Points

I don't think I explained this well. Sorry, I'm just a student too. What I meant was when you join your arrays , all the strings were separated and you just need to use a single join. Ugh, I need to practice explaining versus just writing the answer. sooo i'm trying!