Math.E

Math.LN10

Math.LN2

Math.LOG2E

Math.LOG10E

Math.PI

Math.SQRT1_2

Math.SQRT2

These are some useful math constants, all read-only. Here are their values:

>>> Math.E

2.718281828459045

>>> Math.LN10

2.302585092994046

>>> Math.LN2

0.6931471805599453

>>> Math.LOG2E

1.4426950408889634

>>> Math.LOG10E

0.4342944819032518

>>> Math.PI

3.141592653589793

>>> Math.SQRT1_2

0.7071067811865476

>>> Math.SQRT2

1.4142135623730951

Math.acos(x)

Math.asin(x)

Math.atan(x)

Math.atan2(y, x)

Math.cos(x)

Math.sin(x)

Math.tan(x)

Trigonometric functions

Math.round(x)

Math.floor(x)

Math.ceil(x)

round() gives you the nearest integer, ceil() rounds up and floor() rounds down:

>>> Math.round(5.5)

6

>>> Math.floor(5.5)

5

>>> Math.ceil(5.1)

6

Math.max(num1, num2, num3, ...)

Math.min(num1, num2, num3, ...)

max() returns the largest and min() returns the smallest of the numbers passed to them as arguments. If at least one of the input parameters is NaN, the result is also NaN.

>>> Math.max(2, 101, 4.5)

101

>>> Math.min(2, 101, 4.5)

2

Math.abs(x)

Absolute value.

>>> Math.abs(-101)

101

>>> Math.abs(101)

101

Math.exp(x)

Exponential function: Math.E to the power of x

Math.log(x)

Natural logarithm of x.

Math.sqrt(x)

Square root of x .

>>> Math.sqrt(9)

3

>>> Math.sqrt(2) === Math.SQRT2

true

Math.pow(x, y)

x to the power of y.

>>> Math.pow(3, 2)

9

Math.random()

Random number between 0 and 1 (including 0).

>>> Math.random()

0.8279076443185321