There are many methods of the Math functions used are the following
var arr=[1,2,3,4,5,6]
//最小值
console.log(Math.min(...arr)) //结果： 1
//最大值
console.log(Math.max(...arr)) //结果： 6
//绝对值
console.log(Math.abs(-10)) //结果： 10
//退一取整（向下取整）
console.log(Math.floor(1.9)) //结果： 1
//进一取整（向上取整）
console.log(Math.ceil(1.1)) //结果： 2
//幂运算 2的3次方
console.log(Math.pow(2,3)) //结果 8
//平方运算 返回一个数的平方根
console.log(Math.sqrt(9)) // 结果 3
Emphasis
Math random number acquisition
Such random number acquired only get a decimal between 0 and 1, to obtain the minimum infinitely close to zero decimal places, but never fail to 0, the maximum decimal infinitely close to 1 is obtained, but also fail to empathy 1
console.log(Math.random());
Thus obtained in the range of (0-9) between theThere decimal number，Infinitely close to the maximum 10This integer
console.log(Math.random()*10)
To obtain the number range (0 to 10), the multiplication and addition 1 to 10 on the basis of
//方法一
console.log((Math.random()*10)+1)
//方法二
console.log(Math.random()*11)
To get a random integer results, to add a method
console.log(Math.floor(Math.random()*11))
To obtain a random integer in the range of (5-10)
console.log(Math.floor(Math.random()*6)+5)
To get a summary of the specified range into a random integer may be packaged using the method according to the law
function random(min,max){
return Math.floor(Math.random()*(max-min+1))+min
}
console.log(random(10,20))
