Name
Math
Synopsis
Math.constant
Math.function
( )
Description
The Math object is a placeholder for grouping mathematical constants
and functions. It does not define a class of objects as Date and
String do. There is no Math( )
constructor, and
functions like Math.sin( )
are simply functions,
not methods that operate on an object.
Constants
-
Math.E
The constant e, the base of the natural logarithm.
-
Math.LN10
The natural logarithm of 10.
-
Math.LN2
The natural logarithm of 2.
-
Math.LOG10E
The base-10 logarithm of e.
-
Math.LOG2E
The base-2 logarithm of e.
-
Math.PI
The constant π.
-
Math.SQRT1_2
1 divided by the square root of 2.
-
Math.SQRT2
The square root of 2.
Functions
-
Math.abs(
x
)
Returns the absolute value of
x
.-
Math.acos(
x
)
Returns the arc cosine of
x
; the return value is between 0 and π radians.-
Math.asin(
x
)
Returns the arc sine of
x
; the return value is between -π/2 and π/2 radians.-
Math.atan(
x
)
Returns the arc tangent of
x
; the return value is between -π/2 and π/2 radians.-
Math.atan2(
y
,x
)
Returns a value between -π and π radians that specifies the counterclockwise angle between the positive X-axis and the point (
x
,y
). Note the order of the arguments to this function.-
Math.ceil(
x
)
Returns the nearest integer greater than or equal to
x
.-
Math.cos(
x
)
Returns the cosine of the specified value
x
.-
Math.exp(
x
)
Returns the constant e raised to the power of
x
.-
Math.floor(
x
)
Returns the nearest integer less than or equal to
x
.-
Math.log(
x
)
Returns the natural logarithm ...
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