Javascript Math - floor Method

Description:

This method returns the largest integer less than or equal to a number.

Syntax:

Math.floor( x ) ;

Here is the detail of parameters:

x : A numbers.

Return Value:

Returns the largest integer less than or equal to a number x.

Example:

<html>
<head>
<title>JavaScript Math floor() Method</title>
</head>
<body>
<script type="text/javascript">

var value = Math.floor(10.3);
document.write("First Test Value : " + value ); 
  
var value = Math.floor(30.9);
document.write("<br />Second Test Value : " + value ); 

var value = Math.floor(-2.9);
document.write("<br />Third Test Value : " + value ); 

var value = Math.floor(-2.2);
document.write("<br />Fourth Test Value : " + value ); 
</script>
</body>
</html>

This will produce following result:

First Test Value : 10
Second Test Value : 30
Third Test Value : -3
Fourth Test Value : -3

To understand it in better way you can Try it yourself.