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JavaScript JavaScript Quickstart Functions Write a Function

anyone know where I'm going wrong?

missing something here...

script.js
function add10(num, + 10){
  return num + 10;
}
console.log( add(num, 10);
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

Steven Parker
Steven Parker
229,582 Points

The function is intended to have just one parameter. Also, even if a second one was needed, operators and numbers cannot be used as parameter names.

And the function call on the last line has several issues:

  • the parentheses are unbalanced, it's missing a closing parenthesis at the end
  • it's calling "add" but the function name is "add10"
  • it should pass just one argument (the literal this time)
  • you only need to call the function, you don't also need to log the result