To get the absolute value of a number in JavaScript, use the Math.abs() function. It returns the absolute value. The following is the parameter supported by the abs() method −
- x − A number
Example
You can try to run the following code to learn how to get the absolute value of a number −
<html>
<head>
<title>JavaScript Math abs() Method</title>
</head>
<body>
<script>
var value = Math.abs(-10);
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 );
</script>
</body>
</html>