Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript JavaScript Basics (Retired) Working With Numbers Using Math Methods

Samantha Atkinson
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Samantha Atkinson
Front End Web Development Techdegree Graduate 40,307 Points
Posted by Samantha Atkinson
.a{fill-rule:evenodd;}techdegree seal-36
Samantha Atkinson
Front End Web Development Techdegree Graduate 40,307 Points

Why is there no semicolon after the value 37.5. I thought all variables have to end with a semicolon?

The first variable set in this Challenge, doesn't have a semicolon before I even start the challenge. Am I suppose to add it or is it a mistake?

script.js 
var temperature = 37.5
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>

5 Answers

Daniel Newman
Daniel Newman
Courses Plus Student 10,715 Points

You are right. It's mistake but... JS-engine "under the hood" automatically push semicolons and there is a great problem to not put it by yourself. Classical example: "What will function return?"

function test() {
  return
           7+3
}
test()

It will return "undefined". Because JS-engine of your browser will put ";" after "return" statement automatically.

Gloria Dwomoh
Gloria Dwomoh
13,116 Points

Samantha Atkinson There is a "Best Answer" tag below the answer. You click that and it marks the answer as Best Answer.

Daniel Newman
Daniel Newman
Courses Plus Student 10,715 Points

You are welcome. Just mark this question as answered. =)