Prototype abs() Method

Syntax:

number.abs();

Return Value:

Returns the absolute value of the number.

Example:

<html>
<head>
<title>Prototype examples</title>
<script type="text/javascript" 
   src="/javascript/prototype.js">
</script>
<script>

function showResult(){

   alert( "Math.abs(-5) : " + Math.abs(-5) );
   alert( "(-5).abs() : " + (-5).abs() );
   alert( "(5).abs() : " + (5).abs() );
}

</script>
</head>

<body>

  <p>Click the button to see the result.</p>
  <br />
  <br />
  <input type="button" value="Result" onclick="showResult();"/>

</body>
</html>

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