Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript JavaScript Foundations Arrays Methods: Part 2

Posted by Norman Craig
Norman Craig
14,018 Points

sort using length

I'm working on the challenge that requires I use "sort"with length inside. I feel like I'm very close, but can't get a correct answer. Can anyone correct my code?

Norm

index.html 
<!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: Methods Part 1</h2>
    <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)
                    {
                     saying2.length;
                     return a-b;
                    }                    
                  );
          </script>
  </body>
</html>

1 Answer

eck
eck
43,038 Points

You are indeed pretty close, you are just not getting the length for the correct strings.

      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){

        // Get the lengths of the strings that will be compared by the sort() method and subtract then from one another.
        // The result is sent to the sort method, which will do some magic and arrays will be organized.
        return a.length - b.length;
      });

If you don't like magic, you can uncover the truth of sort() here.

Norman Craig
Norman Craig
14,018 Points

Erik Thank you sooo much. I fought with that for longer than I care to share!