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 Basics (Retired) Creating Reusable Code with Functions Passing an Argument to a Function

Hi,How I shut rite that?

function returnValue('number') { return number; } var echo = returnValue;

script.js
function returnValue('number') {
  return number;
}
var echo = returnValue;
index.html
<!DOCTYPE HTML>
<html>
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  <title>JavaScript Basics</title>
</head>
<body>
<script src="script.js"></script>
</body>
</html>

1 Answer

Ben Reynolds
Ben Reynolds
35,170 Points
  1. Remove the quote marks from the parameter name on line one. We're not passing a string argument just yet, only defining the function. At this point the word number is just a placeholder for the string you'll pass in for the second part of the challenge.

  2. The echo variable's value should be the result of calling the returnValue function, and to invoke a function you'll need to put parentheses at the end of the function name. Inside those parentheses is where you pass in the string you want to return, so you will need quote marks around that value.

Thank you for your reply :)