pow()  Math  class methodS2C Home  « Globals « Math « pow()

Description

Returns base to the exponent power.  base exponent

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

Syntax

Signature Description
Math.pow(base.exponent)Returns base to the exponent power.  base exponent

Parameters

Parameter Description
baseThe base number:
  • Negative numbers returns NaN.
  • Non-numeric strings returns NaN.
  • Passing no parameter returns NaN.
  • Passing null returns 0.
exponentThe base number:
  • Non-numeric strings returns NaN.
  • Passing no parameter returns NaN.
  • Passing null returns 1.

Examples

The code below displays pow() usage.


/*
 * Store results in an array.
 */ 
var powValues = new Array(10);
powValues[0] = Math.log(-7,2);
powValues[1] = Math.pow(7,-2);
powValues[2] = Math.pow(0,5);
powValues[3] = Math.pow(5,0);
powValues[4] = Math.pow('0.75','2');
powValues[5] = Math.pow('a string',6);
powValues[6] = Math.pow(6,'a string');
powValues[7] = Math.pow();
powValues[8] = Math.pow(null,4);
powValues[9] = Math.pow(4,null);
alert(powValues);

Press the button below to action the above code:


Related Tutorials

JavaScript Advanced Tutorials - Lesson 4 - Math

go to home page Homepage go to top of page Top