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

Posted by Attain Bhakiro
Attain Bhakiro
10,410 Points

math object

how can i round a number downward as asked by the question bellow:

Open an alert dialog a second time and display the temperature variable rounded downward to the nearest integer (hint: down is toward the "floor".)

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

3 Answers

Ryan Field
PLUS
Ryan Field
Courses Plus Student 21,242 Points
Ryan Field
Ryan Field
Courses Plus Student 21,242 Points

Math.floor() will drop a number down to the nearest integer, regardless of the decimal point. I.e., both Math.floor(37.2) and Math.floor(37.99999) will both return 37.

Brooke Janssens
Brooke Janssens
8,090 Points
Brooke Janssens
Brooke Janssens
8,090 Points

You almost had it, just replace "roundfloor" with "floor"

alert(Math.floor(temperature));

Aminul Islam
Aminul Islam
1,714 Points
Aminul Islam
Aminul Islam
1,714 Points

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