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

Posted by Gena I
Gena I
540 Points

confused by where var echo should go

can someone explain what this task is asking

script.js 
function returnValue(Fred) {
  return Fred;

}
var echo= returnValue(Mary);
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

Brodey Newman
Brodey Newman
10,962 Points
Brodey Newman
Brodey Newman
10,962 Points

Hey Gena!

So to explain what's going on here..

You are creating a function that takes in a value as a parameter like below:

function returnValue(val) {
     return val;
}

Since you are returning the value inside of that function, we want a way to store that value which is returned from that function, inside of a variable. Below is what they are expecting.

var echo = returnValue('Hello!');

So now, if you console.log 'echo', you will see 'Hello!' logged to the console!

Below is what your code should look like to pass this challenge.

function returnValue(val) {
     return val;
}

var echo = returnValue('Hello!');

I hope this helps! :)

gyorgyandorka
gyorgyandorka
13,811 Points
gyorgyandorka
gyorgyandorka
13,811 Points

Hi! When you call the function, you should pass in a string value as an argument, but you've passed in a variable which is not defined anywhere (the program does not know where to look for the value of Mary, this leads to an error). Note: in JavaScript (and most other languages) the convention is to start variable names with a lowercased letter.