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

Posted by Garth Miller
Garth Miller
7,567 Points

if alert(Math.floor(temperature)); is NaN then how do i get around this

just trying to get around this problem

script.js 
var temperature = alert(Math.round(37.5));
alert(Math.floor(temperature));
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

furkan
furkan
11,733 Points
furkan
furkan
11,733 Points

var temperature = alert(Math.round(37.5)); alert(Math.floor(temperature));

I believe you are assigning a string to the temperature variable when you use alert to store the 37.5. So instead of saying:

Var temperature = alert(Math.round(37.5));

Try removing the alert and just store the following for the temperature variable:

var temperature = Math.round(37.5);

Then the rest of the code should be fine once you have ammended this part.

Anthony Collier
Anthony Collier
101 Points

I found by removing the Math.round() method from the temperature variable and doing this below actually functions correctly.

var temperature = 37.5;
alert(Math.round(temperature)); // expected output: 38
alert(Math.floor(temperature)); // expected output: 37

Based off your code, I went with this:

var temperature = alert(Math.round(37.5)); // expected output: 38
alert(Math.floor(temperature)); // expected output: NaN

But line 1 displays 38 and line 2 displays NaN because alert(Math.round(37.5)) is not a number. Am I interpretting this correctly?