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

Posted by Matt Bloomer
Matt Bloomer
10,608 Points

Math.floor

Why is this incorrect? It is asking me if I used Math.floor.

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

2 Answers

L B
L B
28,323 Points
L B
L B
28,323 Points

Because you are changing the value of temperature by using the assignment operator (=). You dont want to change the original value. You are trying to do Math.floor(38) when it should be Math.floor(37.5). Correct answer is:

alert(Math.round(temperature));
alert(Math.floor(temperature));
jaredcowan
jaredcowan
11,808 Points
jaredcowan
jaredcowan
11,808 Points

It might be because you have a space between the declaration and the parentheses.

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