The Math.floor() method returns the value of a number rounded downwards to the nearest integer.
Example
You can try to run the following code to round down numbers −
Live Demo
<html> <head> <title>JavaScript Math floor() Method</title> </head> <body> <script> var value = Math.floor( 2.7 ); document.write("First Test Value : " + value ); var value = Math.floor( 20.9 ); document.write("<br />Second Test Value : " + value ); var value = Math.floor( 15.4 ); document.write("<br />Third Test Value : " + value ); </script> </body> </html>
Output
First Test Value : 2 Second Test Value : 20 Third Test Value : 15