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JavaScript JavaScript Quickstart Functions Write a Function

Posted by Christopher Mawonde
Christopher Mawonde
3,044 Points

Calling functions

How do you call a function and the specific syntax involved. I'm struggling on the last bit when I have passed the arguments thus calling the function.

script.js 
function add10(2) {
  return 2+10
}
function 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

Trent Ungard
Trent Ungard
10,533 Points
Trent Ungard
Trent Ungard
10,533 Points

The issue with your syntax is that at time of declaration you shouldn't pass a fixed value into the function. When calling it after it is declared, you don't need to use "function". To fix your function, change the 2 in the parameter of your function and inside of your function to an x and when you call it, simply put "add10(valueYouWantToAdd10to)".

This would look like

function add10(x){ return x + 10; }

add10(8);

8 can be substituted in for any integer you would like to add. It will change the x out for the value you pass. Hope this answers your question. Cheers!