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Math object's properties and methods

2005-04-07 10:29 435 查看

The Math object's properties and methods are described below:
NN: Netscape, IE: Internet Explorer

Syntax: object.property_name

Property	Description	NN	IE
E	Returns the base of a natural logarithm	2	3
LN2	Returns the natural logarithm of 2	2	3
LN10	Returns the natural logarithm of 10	2	3
LOG2E	Returns the base-2 logarithm of E	2	3
LOG10E	Returns the base-10 logarithm of E	2	3
PI	Returns PI	2	3
SQRT1_2	Returns 1 divided by the square root of 2	2	3
SQRT2	Returns the square root of 2	2	3

Syntax: object.method_name()

Method	Description	NN	IE
abs(x)	Returns the absolute value of x	2	3
acos(x)	Returns the arccosine of x	2	3
asin(x)	Returns the arcsine of x	2	3
atan(x)	Returns the arctangent of x	2	3
atan2(y,x)	Returns the angle from the x axis to a point	2	3
ceil(x)	Returns the nearest integer greater than or equal to x	2	3
cos(x)	Returns the cosine of x	2	3
exp(x)	Returns the value of E raised to the power of x	2	3
floor(x)	Returns the nearest integer less than or equal to x	2	3
log(x)	Returns the natural log of x	2	3
max(x,y)	Returns the number with the highest value of x and y	2	3
min(x,y)	Returns the number with the lowest value of x and y	2	3
pow(x,y)	Returns the value of the number x raised to the power of y	2	3
random()	Returns a random number between 0 and 1	2	3
round(x)	Rounds x to the nearest integer	2	3
sin(x)	Returns the sine of x	2	3
sqrt(x)	Returns the square root of x	2	3
tan(x)	Returns the tangent of x	2	3

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标签： properties methods math object integer random

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