📅 最后修改于: 2020-10-23 15:05:24 🧑 作者: Mango
JavaScript数学对象提供了一些常数和方法来执行数学运算。与日期对象不同，它没有构造函数。
让我们看一下带有描述的JavaScript Math方法列表。
| Methods | Description |
|---|---|
| abs() | It returns the absolute value of the given number. |
| acos() | It returns the arccosine of the given number in radians. |
| asin() | It returns the arcsine of the given number in radians. |
| atan() | It returns the arc-tangent of the given number in radians. |
| cbrt() | It returns the cube root of the given number. |
| ceil() | It returns a smallest integer value, greater than or equal to the given number. |
| cos() | It returns the cosine of the given number. |
| cosh() | It returns the hyperbolic cosine of the given number. |
| exp() | It returns the exponential form of the given number. |
| floor() | It returns largest integer value, lower than or equal to the given number. |
| hypot() | It returns square root of sum of the squares of given numbers. |
| log() | It returns natural logarithm of a number. |
| max() | It returns maximum value of the given numbers. |
| min() | It returns minimum value of the given numbers. |
| pow() | It returns value of base to the power of exponent. |
| random() | It returns random number between 0 (inclusive) and 1 (exclusive). |
| round() | It returns closest integer value of the given number. |
| sign() | It returns the sign of the given number |
| sin() | It returns the sine of the given number. |
| sinh() | It returns the hyperbolic sine of the given number. |
| sqrt() | It returns the square root of the given number |
| tan() | It returns the tangent of the given number. |
| tanh() | It returns the hyperbolic tangent of the given number. |
| trunc() | It returns an integer part of the given number. |
JavaScript math.sqrt(n)方法返回给定数字的平方根。
Square Root of 17 is:
输出：
Square Root of 17 is: 4.123105625617661
JavaScript math.random()方法返回0到1之间的随机数。
Random Number is:
输出：
Random Number is: 0.6188330422885244
JavaScript math.pow(m，n)方法将m返回为mn的n的幂。
3 to the power of 4 is:
输出：
3 to the power of 4 is: 81
JavaScript math.floor(n)方法返回给定数字的最小整数。例如3表示3.7，5表示5.9等。
Floor of 4.6 is:
输出：
Floor of 4.6 is: 4
JavaScript math.ceil(n)方法返回给定数字的最大整数。例如3.7表示4，5.9表示6等。
Ceil of 4.6 is:
输出：
Ceil of 4.6 is: 5
JavaScript math.round(n)方法返回最接近给定数字的舍入整数。如果小数部分等于或大于0.5，则变为上限值1，否则变为下限值0。例如3.7的4、3.3的3、5.9的6等。
Round of 4.3 is:
Round of 4.7 is:
输出：
Round of 4.3 is: 4
Round of 4.7 is: 5
JavaScript math.abs(n)方法返回给定数字的绝对值。例如-4为-4，6.6为-6.6等。
Absolute value of -4 is:
输出：
Absolute value of -4 is: 4