Javascript Math - abs Method

Description:

This method returns the absolute value of a number.

Syntax:

Math.abs( x ) ;

Here is the detail of parameters:

x : A number.

Return Value:

Returns the absolute value of a number.

Example:

<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>

This will produce following result:

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

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