JavaScript - Math abs Method

Description

This method returns the absolute value of a number.

Syntax

Its syntax is as follows −

Math.abs( x ) ;

Parameter Details

x − A number.

Return Value

Returns the absolute value of a number.

Example

Try the following example program.

Live Demo

<html>  
   <head>
      <title>JavaScript Math abs() Method</title>
   </head>
   
   <body>   
      <script type = "text/javascript">
         var value = Math.abs(-1);
         document.write("First Test Value : " + value ); 
         
         var value = Math.abs(null);
         document.write("<br />Second Test Value : " + value ); 
         
         var value = Math.abs(20);
         document.write("<br />Third Test Value : " + value ); 
         
         var value = Math.abs("string");
         document.write("<br />Fourth Test Value : " + value ); 
      </script>   
   </body>
</html>

Output

First Test Value : 1
Second Test Value : 0
Third Test Value : 20
Fourth Test Value : NaN

javascript_math_object.htm