Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

JavaScript JavaScript Basics (Retired) Introducing JavaScript Write Another Program

Would like to know proper way to write a function that will open an alert dialog with the message "Warning!".

Would like to know how I can add this function between body tags.

index.html
<!DOCTYPE HTML>
<html>
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  <title>JavaScript Basics</title>
</head>
<body>
<script>Alert.("Warning!");
  </script>
</body>
</html>
Daniel Cuevas
seal-mask
.a{fill-rule:evenodd;}techdegree
Daniel Cuevas
Full Stack JavaScript Techdegree Student 12,836 Points

Hello Michael, the problem with your script is that the alert syntax is wrong. It goes this way:

<script>alert("Warning!");
    </script>

1 Answer

Steven Parker
Steven Parker
216,149 Points

You have a syntax and a spelling issue:

  • there should not be a period between the function name and the parentheses containing the argument
  • JavaScript is case sensitive, and you wrote "Alert" (with a capital "A") instead of "alert"