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JavaScript JavaScript Foundations Functions Return Values

how do i define a function that takes an array as a param, without defining the array?

what's wrong with this sample:

index.html
<!DOCTYPE html>
<html lang="en">
  <head>
    <title>JavaScript Foundations: Functions</title>
    <style>
      html {
        background: #FAFAFA;
        font-family: sans-serif;
      }
    </style>
  </head>
  <body>
    <h1>JavaScript Foundations</h1>
    <h2>Functions: Return Values</h2>
    <script>

       function arrayCounter(array) {
         var array = [1, 2, 3];
      if (typeof array === 'string') {
       return 0;
      }
      if (typeof array === 'number') {
        return 0;
      }
      if (typeof array === 'undefined') {
        return 0;
      }
            return arrayCounter.length;
      }

    </script>
  </body>
</html>

1 Answer

Chris Shaw
Chris Shaw
26,663 Points

Hi Beth,

  1. You don't need to define the variable array within the function as code challenges will pass in parameters unless explicitly specified that you need to do that

  2. the variable arrayCounter doesn't exist, you simply want to get the length of the array using the parameter array

function arrayCounter(array) {
  if (typeof array === 'string') {
    return 0;
  }

  if (typeof array === 'number') {
    return 0;
  }

  if (typeof array === 'undefined') {
    return 0;
  }

  return array.length;
}

Happy coding and Merry Christmas.