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

Michael Gardiner
Michael Gardiner
4,282 Points
Posted by Michael Gardiner
Michael Gardiner
4,282 Points

Confused

Not sure where it wants me to go with this

script.js 
function returnValue() {
  var num1 = x;
  return num1;
  var echo = num1;
}
returnValue("Hello");
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>

2 Answers

Alexandria Wagner
Alexandria Wagner
7,038 Points

Hi Michael,

When you declare a JavaScript function, part of the function syntax includes an "argument" or "parameter." 

function functionName(parameter){
  statement
}

The code challenge you are working on instructs you to create a function named "returnValue," which you have done, that accepts a single argument and returns that argument. What your code is missing is an argument to pass back. See the following:

function returnValue(x){
  return x;
}

There is more information available about functions on the [Mozilla Developer Network.] (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions#The_function_declaration_(function_statement)

I hope that helps! -Alex

James Gill
PLUS
James Gill
Courses Plus Student 34,936 Points
James Gill
James Gill
Courses Plus Student 34,936 Points

Michael,

What Alexandria said. take time to get very familiar with two concepts: arguments/parameters and return values. You'll use them all the time, and they're the fundamental key to using functions anywhere, in most any language.