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

Posted by Jasmine Johnson
Jasmine Johnson
1,134 Points

Math.round??

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

Hakim Rachidi
Hakim Rachidi
38,489 Points
Hakim Rachidi
Hakim Rachidi
38,489 Points

Initializing variables

The main problem is not the Math.round call.

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

You initialized the variable temperature twice. To set a variable you already initialized, don't use the var, let or const keyword again.

Tip: you can use the temperature value instead of using it's literal value.

alert(Math.floor(temperature));