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JavaScript JavaScript Foundations Arrays Methods: Part 2

Matthew Cahn
Matthew Cahn
6,301 Points
Posted by Matthew Cahn
Matthew Cahn
6,301 Points

How do I find the length of strings in an array?

How do I find the length of individual elements in the array. All I know how to do is find the length of the array itself.

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(saying2.length);
    </script>
  </body>
</html>

2 Answers

Alex Heil
Alex Heil
53,547 Points
Alex Heil
Alex Heil
53,547 Points

hey matthew, you're half way there - you're already using sort on the saying2. but you're currently missing the function inside that does the length checking. so building up on what you already have in the challenge this is how it would look:

saying2.sort(function(a, b) {
    return a.length - b.length; 
});

hope that helps and have a nice day ;)

jne
jne
12,613 Points
jne
jne
12,613 Points

For individual elements you need to target each element in your array. You can do that by using a for loop. This will target each element in your saying2 array by using the counter x. Then I'm using the length property to find that elements length and then output the answer to the console.

for(var x=0; x<saying2.length; x++){
var arraylength = saying2[x].length;
console.log(arraylength);
}