Math

Overview

Math provides static properties and methods for mathematical constants and functions.

For more information see: Math (MDN).

Properties Summarized

Type	Name	Summary
Number	E	Euler's constant and the base of natural logarithms.
Number	LN10	Natural logarithm of 10.
Number	LN2	Natural logarithm of 2.
Number	LOG10E	Base 10 logarithm of E.
Number	LOG2E	Base 2 logarithm of E.
Number	PI	Ratio of the circumference of a circle to its diameter.
Number	SQRT1_2	Square root of 1/2.
Number	SQRT2	Square root of 2.

Methods Summarized

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

Properties Detailed

E

Euler's constant and the base of natural logarithms. Approximately 2.718.

Type Number

Sample

Math.E

LN10

Natural logarithm of 10. Approximately 2.302.

Type Number

Sample

Math.LN10

LN2

Natural logarithm of 2. Approximately 0.693.

Type Number

Sample

Math.LN2

LOG10E

Base 10 logarithm of E. Approximately 0.434.

Type Number

Sample

Math.LOG10E

LOG2E

Base 2 logarithm of E. Approximately 1.442.

Type Number

Sample

Math.LOG2E

PI

Ratio of the circumference of a circle to its diameter. Approximately 3.14159.

Type Number

Sample

Math.PI

SQRT1_2

Square root of 1/2. Equivalently, 1 over the square root of 2, approximately 0.707.

Type Number

Sample

Math.SQRT1_2

SQRT2

Square root of 2. Approximately 1.414.

Type Number

Sample

Math.SQRT2

Methods Detailed

abs(x)

Returns the absolute value of a number.

Parameters

• Number x ;

Returns: Number

Sample

Math.abs(number)

acos(x)

Returns the arccosine (in radians) of a number.

Parameters

• Number x ;

Returns: Number

Sample

Math.acos(number)

asin(x)

Returns the arcsine (in radians) of a number.

Parameters

• Number x ;

Returns: Number

Sample

Math.asin(number)

atan(x)

Returns the arctangent (in radians) of a number.

Parameters

• Number x ;

Returns: Number

Sample

Math.atan(number)

atan2(y, x)

Returns the arctangent of the quotient of its arguments.

Parameters

• Number y ;

• Number x ;

Returns: Number

Sample

Math.atan2(number,number)

ceil(x)

Returns the smallest integer greater than or equal to a number.

Parameters

• Number x ;

Returns: Number

Sample

Math.ceil(number)

cos(x)

Returns the cosine of a number.

Parameters

• Number x ;

Returns: Number

Sample

Math.cos(number)

exp(x)

Returns Enumber, where number is the argument, and E is Euler's constant, the base of the natural logarithms.

Parameters

• Number x ;

Returns: Number

Sample

Math.exp(number)

floor(x)

Returns the largest integer less than or equal to a number.

Parameters

• Number x ;

Returns: Number

Sample

Math.floor(number)

log(x)

Returns the natural logarithm (base E) of a number.

Parameters

• Number x ;

Returns: Number

Sample

Math.log(number)

max(value)

Returns the greater of two (or more) numbers.

Parameters

• Array value ;

Returns: Number

Sample

Math.max(number,number,number)

min(value)

Returns the lesser of two (or more) numbers.

Parameters

• Array value ;

Returns: Number

Sample

Math.min(number,number,number)

pow(base, exponent)

Returns base to the exponent power, that is, base exponent.

Parameters

• Number base ;

• Number exponent ;

Returns: Number

Sample

Math.pow(number,number)

random()

Returns a pseudo-random number between 0 and 1.

Returns: void

Sample

Math.random()

round(x)

Returns the value of a number rounded to the nearest integer.

Parameters

• Number x ;

Returns: void

Sample

Math.round(number)

sin(x)

Returns the sine of a number.

Parameters

• Number x ;

Returns: void

Sample

Math.sin(number)

sqrt(x)

Returns the square root of a number.

Parameters

• Number x ;

Returns: void

Sample

Math.sqrt(number)

tan(x)

Returns the tangent of a number.

Parameters

• Number x ;

Returns: void

Sample

Math.tan(number)