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

Kong Yang
Kong Yang
1,370 Points
Posted by Kong Yang
Kong Yang
1,370 Points

How do I store a function into a variable?

Am I interpreting this correctly? The variable "Echo" is storing the function right?

script.js 
function returnValue(one){
  return one;
}
var echo = returnValue();

returnValue("Echo");
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

jcorum
jcorum
71,830 Points
jcorum
jcorum
71,830 Points

Not quite:

function returnValue(one){
  return one;
}
var echo = returnValue("Echo");

It asked you to pass a String to the function, and then assign the result (what comes back from the function) to the variable echo.

The variable echo (not Echo) is not storing the function. It is storing what the function returns. Which in this case is what is given to the function when it is called. So echo is holding the String value "Echo".