Kvadratroden

Kom bare også med flere matematiske functioner i javascript. Hvis du kommer med mange, så hæver jeg points.

Så er det jo rart at have manualen ved hånden:

Math

A built-in object that has properties and methods for mathematical constants and functions. For example, the Math object\'s PI property has the value of pi.
Core object
Implemented in    JavaScript 1.0, NES 2.0
ECMA version      ECMA-262

Created by
  The Math object is a top-level, predefined JavaScript object. You can automatically access it without using a constructor or calling a method.

Description
  All properties and methods of Math are static. You refer to the constant PI as Math.PI and you call the sine function as Math.sin(x), where x is the method\'s argument. Constants are defined with the full precision of real numbers in JavaScript.
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i math objektet ligger der en hulens masse matematiske funktioner:

abs    Returns the absolute value of a number.
acos    Returns the arccosine (in radians) of a number.
asin    Returns the arcsine (in radians) of a number.
atan    Returns the arctangent (in radians) of a number.
atan2  Returns the arctangent of the quotient of its arguments.
ceil    Returns the smallest integer greater than or equal to a number.
cos    Returns the cosine of a number.
exp    Returns Enumber, where number is the argument, and E is Euler\'s
        constant, the base of the natural logarithms.
floor  Returns the largest integer less than or equal to a number.
log    Returns the natural logarithm (base E) of a number.
max    Returns the greater of two numbers.
min    Returns the lesser of two numbers.
pow    Returns base to the exponent power, that is, baseexponent.
random  Returns a pseudo-random number between 0 and 1.
round  Returns the value of a number rounded to the nearest integer.
sin    Returns the sine of a number.
sqrt    Returns the square root of a number.
tan    Returns the tangent of a number.

de kaldes med Math. foran. eg:

var nnn = Math.sqrt(25);

sætter nnn til 5

ingen grund til at give 200+ point for det svar, hent hellere selv en manual:
http://developer.netscape.com/docs/manuals/js/client/jsref/index.htm

mvh JakobA