abs()  Math  class method JS Home  <<  JS Reference  <<  Math  <<  abs()

Description

Returns the absolute value of a number.

  • Like all class methods abs() should be used on the class rather than an instance of the class.

Syntax

Signature Description
Math.abs(value)Returns the absolute value of a number.

Parameters

Parameter Description
valueThe value you wish to find the absolute number of:
  • Non-numeric strings returns NaN.
  • Passing no parameter returns NaN.
  • Passing null returns 0.

Examples

The code below displays abs() usage.


// Store results in an array.
var absValues = new Array(6);

absValues[0] = Math.abs(1);
absValues[1] = Math.abs(-10);
absValues[2] = Math.abs('100');
absValues[3] = Math.abs('five');
absValues[4] = Math.abs();
absValues[5] = Math.abs(null);

alert(absValues);  

Press the button below to action the above code:

Related Tutorials

JavaScript Advanced Tutorials - Lesson 4 - Math