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JavaScript JavaScript Foundations Arrays Methods: Part 3

Posted by jameskuo
jameskuo
2,831 Points

I am not sure about this question.

I try to use push property. it is not working.

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 2</h2>
    <script>
      var first =  ["The", "quick", "brown", "fox", "jumps"]
      var second =  ["over", "the", "lazy"];
      var saying = first.concat(second.push("dog")); 
      var shortSaying = saying;
      var sayingString = saying;
    </script>
  </body>
</html>

1 Answer

Dan Johnson
Dan Johnson
40,532 Points
Dan Johnson
Dan Johnson
40,532 Points

push returns the new length of the array, not the array object. You can move the push statement on to its own line:

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

Or chain concat calls:

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