2014年8月13日 星期三

[JavaScript] About Math

紀錄JavaScript的Math所有的method。

MethodDescription
abs(x)Returns the absolute value of x
acos(x)Returns the arccosine of x, in radians
asin(x)Returns the arcsine of x, in radians
atan(x)Returns the arctangent of x as a numeric value between -PI/2 and PI/2 radians
atan2(y,x)Returns the arctangent of the quotient of its arguments
ceil(x)Returns x, rounded upwards to the nearest integer
cos(x)Returns the cosine of x (x is in radians)
exp(x)Returns the value of Ex
floor(x)Returns x, rounded downwards to the nearest integer
log(x)Returns the natural logarithm (base E) of x
max(x,y,z,...,n)Returns the number with the highest value
min(x,y,z,...,n)Returns the number with the lowest value
pow(x,y)Returns the value of x to the power of y
random()Returns a random number between 0 and 1
round(x)Rounds x to the nearest integer
sin(x)Returns the sine of x (x is in radians)
sqrt(x)Returns the square root of x
tan(x)Returns the tangent of an angle





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