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JavaScript JavaScript Quickstart Functions Write a Function

Posted by Dionte Barnes
Dionte Barnes
10,140 Points

Finally, call the add10 function and pass it one number value as the argument.

Finally, call the add10 function and pass it one number value as the argument.

script.js 
function add10(num) {
  return num + 10;
}
add10(
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

Jonathan Grieve
MOD
Jonathan Grieve
Treehouse Moderator 91,253 Points
Jonathan Grieve
Jonathan Grieve
Treehouse Moderator 91,253 Points

You just need to complete your function call.

When you call a function, you simply give it's name and a set of parentheses like this.

functionName();

Next you need to give the value that the num placeholder variable is used for. When you put a value in between the parantheses for your function all... this is known as passing a value to the function.