JavaScript - Math floor Method

Description

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

Syntax

Its syntax is as follows −

Math.floor( x ) ;

Parameter Details

x − A numbers.

Return Value

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

Example

Try the following example program.

Live Demo

<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>

Output

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

javascript_math_object.htm