Math | NN 2 IE 3 ECMA 1
The Math object is used only in its static object form as a library of math constant values and (mostly trigonometric) operations. As a result, there is no constructor function. Math object properties are constant values, while methods return a numeric value reflecting some math operation on a value; the original value is not altered when the method is invoked.
Invoking a Math object property or method adheres to the following syntax:
    Math.propertyName
    Math.method(param1[, param2])
Be sure to observe the uppercase "M" in the Math object in script statements. All expressions involving the Math object evaluate to or return a value.
Properties

E | LN10 | LN2 | LOG10E | LOG2E | PI | SQRT1_2 | SQRT2

Methods

abs( ) | acos( ) | asin( ) | atan( ) | atan2( ) | ceil( )
cos( ) | exp( ) | floor( ) | log( ) | max( ) | min( )
pow( ) | random( ) | round( ) | sin( ) | sqrt( ) | tan( )

E | NN 2 IE 3 ECMA 1
| Read-only
Returns Euler's constant.
Example
    var num = Math.E;
Value
2.718281828459045

LN2 | NN 2 IE 3 ECMA 1
| Read-only
Returns the natural logarithm of 2.
Example
    var num = Math.LN2;
Value
0.6931471805599453

LN10 | NN 2 IE 3 ECMA 1
| Read-only
Returns the natural logarithm of 10.
Example
    var num = Math.LN10;
Value
2.302585092994046

LOG2E | NN 2 IE 3 ECMA 1
| Read-only
Returns the log base-2 of Euler's constant.
Example
    var num = Math.LOG2E;
Value
1.4426950408889634

LOG10E | NN 2 IE 3 ECMA 1
| Read-only
Returns the log base-10 of Euler's constant.
Example
    var num = Math.LOG10E;
Value
0.4342944819032518

PI | NN 2 IE 3 ECMA 1
| Read-only
Returns the value of π.
Example
    var num = Math.PI;
Value
3.141592653589793

SQRT1_2 | NN 2 IE 3 ECMA 1
| Read-only
Returns the square root of 0.5.
Example
    var num = Math.SQRT1_2;
Value
0.7071067811865476

SQRT2 | NN 2 IE 3 ECMA 1
| Read-only
Returns the square root of 2.
Example
    var num = Math.SQRT2;
Value
1.4142135623730951

abs( ) | NN 2 IE 3 ECMA 1
abs(number) |
Returns the absolute value of the number passed as a parameter.
Parameters

- Any number.

Returned Value
Positive number or zero.

acos( ) | NN 2 IE 3 ECMA 1
acos(number) |
Returns the arc cosine (in radians) of the number passed as a parameter.
Parameters

- Any number from -1 to 1.

Returned Value
Number.

asin( ) | NN 2 IE 3 ECMA 1
asin(number) |
Returns the arc sine (in radians) of the number passed as a parameter.
Parameters

- Any number from -1 to 1.

Returned Value
Number.

atan( ) | NN 2 IE 3 ECMA 1
atan(number) |
Returns the arc tangent (in radians) of the number passed as a parameter.
Parameters

- Any number between negative infinity and infinity.

Returned Value
Number.

atan2( ) | NN 2 IE 4 ECMA 1
atan2(x, y) |
Returns the angle (in radians) of angle formed by a line to Cartesian point x, y.
Parameters

- Any number.
- Any number.

Returned Value
Number between - and .

ceil( ) | NN 2 IE 3 ECMA 1
ceil(number) |
Returns the next higher integer that is greater than or equal to the number passed as a parameter.
Parameters

- Any number.

Returned Value
Integer.

cos( ) | NN 2 IE 3 ECMA 1
cos(number) |
Returns the cosine of the number passed as a parameter.
Parameters

- Any number.

Returned Value
Number.

exp( ) | NN 2 IE 3 ECMA 1
exp(number) |
Returns the value of Euler's constant to the power of the number passed as a parameter.
Parameters

- Any number.

Returned Value
Number.

floor( ) | NN 2 IE 3 ECMA 1
floor(number) |
Returns the next lower integer that is less than or equal to the number passed as a parameter.
Parameters

- Any number.

Returned Value
Integer.

log( ) | NN 2 IE 3 ECMA 1
log(number) |
Returns the natural logarithm (base e) of the number passed as a parameter.
Parameters

- Any number.

Returned Value
Number.

max( ) | NN 2 IE 3 ECMA 1
max(number1, number2) |
Returns the greater value of the two parameters.
Parameters

- Any number.
- Any number.

Returned Value
Number.

min( ) | NN 2 IE 3 ECMA 1
min(number1, number2) |
Returns the lesser value of the two parameters.
Parameters

- Any number.
- Any number.

Returned Value
Number.

pow( ) | NN 2 IE 3 ECMA 1
pow(number1, number2) |
Returns the value of the first parameter raised to the power of the second parameter.
Parameters

- Any number.
- Any number.

Returned Value
Number.

random( ) | NN 2 IE 3 ECMA 1
Returns a pseudo-random number between 0 and 1. To calculate a pseudo-random integer between zero and another maximum value, use the formula:
    Math.floor(Math.random( ) * (n+1))
where n is the top integer of the acceptable range. To calculate a pseudo-random integer between a range starting with a number other than zero, use the formula:
    Math.floor(Math.random( ) * n - m + 1) + m
where m is the lowest integer of the acceptable range and n equals the maximum value of the range. Note that the Math.random( ) method does not work in the Windows and Macintosh versions of Navigator 2.
Parameters
None.
Returned Value
Number from 0 up to, but not including, 1.

round( ) | NN 2 IE 3 ECMA 1
round(number) |
Returns an integer that follows rounding rules. If the value of the passed parameter is greater than or equal to x.5, the returned value is x + 1; otherwise, the returned value is x.
Parameters

- Any number.

Returned Value
Integer.

sin( ) | NN 2 IE 3 ECMA 1
sin(number) |
Returns the sine (in radians) of the number passed as a parameter.
Parameters

- Any number.

Returned Value
Number.

sqrt( ) | NN 2 IE 3 ECMA 1
sqrt(number) |
Returns the square root of the number passed as a parameter.
Parameters

- Any number.

Returned Value
Number.

tan( ) | NN 2 IE 3 ECMA 1
tan(number) |
Returns the tangent (in radians) of the number passed as a parameter.
Parameters

- Any number between negative infinity and infinity.

Returned Value
Number.