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.

Daiji Nara
2,161 PointsBug report: Javascript Foundation Challenge on Math Operator. Task 4 has can't be completed compiler fail
I will stop paying for treehouse service.
bad customer experience.
<!DOCTYPE html>
<html lang="en">
<head>
<title>JavaScript Foundations: The Math Object</title>
<link rel="stylesheet" href="core.css">
<script>
var diameter = 5.75,
a = 17,
b = 42,
c = 1337,
ageIfILiveToYear2100 = (new Date(2100, 0, 1) - new Date(1995, 5, 16, 7, 20)) / (1000 * 60 * 60 * 24 * 365.242);
var circumference = diameter * Math.PI;
var chance = Math.random() * 20;
var maxWidth = Math.max(a,b,c);
var age = Math.floor(ageIfLiveToYear2100);
/*
The JavaScript Math object has the following
constant (among others):
Math.PI
Approximately 3.14159. Pi (π) is used
to determine the circumference of a circle
given its diameter by multiplying the diameter
by π. Geometery refresher: the circumference
of a circle is the distance around the outside
edge. The diameter is the width of the circle.
The JavaScript Math object also has the following
methods (among others):
Math.random()
Returns a random number between 0 and 1
Math.max(a, b, ...)
Returns the largest value of the passed
arguments
Math.floor(a)
Returns the value of a number rounded down to
the nearest integer
*/
</script>
</head>
<body>
<h1>JavaScript Foundations</h1>
<h2>The Math Object</h2>
<script src="viewer.js"></script>
</body>
</html>
2 Answers

Anuar Abdullahi
Courses Plus Student 2,448 Pointsvar age = Math.floor(ageIfLiveToYear2100);
- I think that you forgot to put the letter "I" in the ageIfLiveToYear2100. It should be "ageIfILiveToYear2100" (ageIf"I"LiveToYear2100 ).
Let me know if that helped.

Oussama Baktit
7,717 PointsI agree with Anuar Abdullahi