Kita'war JavaScript Math
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Math 对象
Math 对象允许您执行数学任务。
Math 不是构造函数。Math 的所有属性/方法都可以通过使用 Math 作为对象来调用,而无需创建它:
var x = Math.PI; // fanhui PI var y = Math.sqrt(16); // fanhui 16 de pingfang gen zhi
guan yu Math duixiang de jiaocheng qing yuedu women de JavaScript shuxue jiaocheng.
Math duixiang shuxing
shuxing | miaoshu |
---|---|
E | tushen oula shu (yue 2.718). |
LN2 | tushen 2 de ziran duilv (yue 0.693). |
LN10 | tushen 10 de ziran duilv (yue 2.302). |
LOG2E | tushen E de yi 2 wei di de duilv (yue 1.442). |
LOG10E | tushen E de yi 10 wei di de duilv (yue 0.434). |
PI | tushen PI (yue 3.14). |
SQRT1_2 | tushen 1/2 de pingfang gen zhi (yue 0.707). |
SQRT2 | tushen 2 de pingfang gen zhi (yue 1.414). |
Math duixiang fangfa
fangfa | miaoshu |
---|---|
abs(x) | tushen x de juedui zhi. |
acos(x) | tushen x de fan yu shun zhi, yi yuanhu wei du wei yuanshu. |
acosh(x) | tushen x de shuangqu fan yu shun. |
asin(x) | tushen x de fan duanxian zhi, yi yuanhu wei du wei yuanshu. |
asinh(x) | tushen x de shuangqu fan duanxian zhi. |
atan(x) | tushen x de fan duanxian zhi, fanhui de zhi shi -PI/2 dao PI/2 zhijian de yuanhu zhi. |
atan2(y, x) | tushen ci can shu shang de fan duanxian zhi. |
atanh(x) | tushen x de shuangqu fan duanxian. |
cbrt(x) | tushen x de san ci fang gen. |
ceil(x) | tushen x, xiangshang shuairui wei zuijing de zhengshu. |
clz32(x) | tushen x de 32 wei erjinzhi biaoxian zhong qianxian ling de shuliang. |
cos(x) | tushen x de yu shun zhi (x yi yuanhu wei du). |
cosh(x) | tushen x de shuangqu yu shun. |
exp(x) | tushen Ex de zhi. |
expm1(x) | tushen Ex jian 1 de zhi. |
floor(x) | tushen x, xiangxia shuairui wei zuijing de zhengshu. |
fround(x) | tushen shu de zuijing de (32 wei dan jingdu) fuhao biaoxian. |
log(x) | tushen x de ziran duilv. |
log10(x) | tushen x de yi 10 wei di de duilv. |
log1p(x) | tushen 1 + x de ziran duilv. |
log2(x) | tushen x de yi 2 wei di de duilv. |
max(x, y, z, ... , n) | tushen zanli zifuhao. |
min(x, y, z, ... , n) | tushen zanli zifuhao. |
pow(x, y) | Hausa Return the yth power of x. |
random() | Hausa Return a random number between 0 and 1. |
round(x) | Hausa Round x to the nearest integer. |
sign(x) | Hausa Return the sign of a number (check if it is positive, negative, or zero). |
sin(x) | Hausa Return the sine of x (x in radians). |
sinh(x) | Hausa Return the hyperbolic sine of x. |
sqrt(x) | Hausa Return the square root of x. |
tan(x) | Hausa Return the tangent of an angle. |
tanh(x) | Hausa Return the hyperbolic tangent of a number. |
trunc(x) | Hausa Return the integer part of the number (x). |
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