Math Operations

 

The Math object is a static class. All methods and properties are static. The Math class can not be created using the "new" operator.

 

Math Constructors:

 

None.

 

Math Examples:

 

//round to next lowest integer

var n = Math.floor( 1.23 ); //n is now 1

 

//round up to next highest integer

var n = Math.ceil( 1.23 ); //n is now 2

 

Math Properties:

 

E Euler's constant and the base of natural logarithms, approximately 2.718.

var n = Math.E;

LOG2E Base 2 logarithm of E (approximately 1.442).

LOG10E Base 10 logarithm of E (approximately 0.434).

LN2 Natural logarithm of 2, approximately 0.693.

LN10 Natural logarithm of 10, approximately 2.302.

PI Ratio of the circumference of a circle to its diameter, approximately 3.14159.

SQRT2 Square root of 2, approximately 1.414.

SQRT1_2 Square root of 1/2; equivalently, 1 over the square root of 2, approximately 0.707.

 

Math Methods:

 

abs(nValue) Returns the absolute value of nValue.

var negValue = -10;

var absValue= Math.abs(negValue); 

/* absValue will now equal 10 */

acos(nValue) Returns the arc cosine of nValue.

asin(nValue) Returns the arc sine of nValue.

atan(nValue) Returns the arc tangent of nValue.

atan2(yValue, xValue) Returns the angle (in radians) from the X axis to a point (y,x). 

ceil(nValue) Returns the smallest integer greater than or equal to nValue.

cos(nValue) Returns the cosine of nValue.

exp(nValue) Returns E to the power of nValue.

floor(nValue) Returns the largest integer less than or equal to nValue.

log(nValue) Returns the natural log of nValue.

max(aValue, bValue) Returns the maximum value of aValue and bValue.

min(aValue, bValue) Returns the minimum value of aValue and bValue.

pow(baseValue, exponentValue) Returns baseValue to the power of exponentValue (baseValue ^ exponentValue)

random() Returns a random number.

round(nValue) Returns the value of nValue rounded to the nearest integer.

sin(nValue) Returns the sin of nValue.

sqrt(nValue) Returns the square root of nValue.

tan(nValue) Returns the tangent of nValue.