Math Object (JavaScript)
An intrinsic object that provides basic mathematics functionality and constants.
Math.[{property  method}]
The following table lists the constants of the Math object.
Constant 
Description 

The mathematical constant e. This is Euler's number, the base of natural logarithms. 

The natural logarithm of 2. 

The natural logarithm of 10. 

The base2 logarithm of e. 

The base10 logarithm of e. 

Pi. This is the ratio of the circumference of a circle to its diameter. 

The square root of 0.5, or, equivalently, one divided by the square root of 2. 

The square root of 2. 
The following table lists the functions of the Math object.
Function 
Description 

Returns the absolute value of a number. 

Returns the arccosine of a number. 

Returns the arcsine of a number. 

Returns the arctangent of a number. 

Returns the angle (in radians) from the X axis to a point represented by the supplied y and x coordinates. 

Returns the smallest integer that is greater than or equal to the supplied numeric expression. 

Returns the cosine of a number. 

Returns e (the base of natural logarithms) raised to a power. 

Returns the greatest integer that is less than or equal to the supplied numeric expression. 

Returns the natural logarithm of a number. 

Returns the greater of two supplied numeric expressions. 

Returns the lesser of two supplied numbers. 

Returns the value of a base expression raised to a specified power. 

Returns a pseudorandom number between 0 and 1. 

Returns a specified numeric expression rounded to the nearest integer. 

Returns the sine of a number. 

Returns the square root of a number. 

Returns the tangent of a number. 