1.random
Syntax: Math.random()
Function: Get a random number between 0 and 1, including 0, not including 1
var num = Math.random()
console.log(num)
2.round
Syntax: Math.round()
Function: Round the data to an integer
var num = Math.round(1.5)
console.log(num) //---> 2
3.ceil
Syntax: Math.ceil()
Function: round up the data
var num = Math.ceil(1.0000001)
console.log(num) //---> 2
4.floor
Syntax: Math.floor()
Function: Round the data down
var num = Math.floor(1.9999999)
console.log(num) //---> 1
5.abs
Syntax: Math.abs()
Function: Take the absolute value of the data
var num = Math.absj(-1)
console.log(num) //---> 1
6.sqrt
Syntax: Math.sqrt()
Function: find square root
var num = Math.sqrt(16)
console.log(num) //---> 4
7.pow
Syntax: Math.pow(data 1, data 2)
Function: Find the x power of a base number
var num = Math.pow(2,3)
console.log(num) //---> 8
8.max
Syntax: Math.max(data 1, data 2, data 3...)
Function: Find the maximum value in the parameters
var num = Math.max(100,20,300,4,5000)
console.log(num) //---> 5000
9.min
Syntax: Math.min(data 1, data 2, data 3...)
Function: Find the minimum value in the parameters
var num = Math.min(100,20,300,4,5000)
console.log(num) //---> 4
10.PI
Syntax: Math.PI
Function: find the minimum value in the parameters
var num = Math.PI
console.log(num) //---> 3.1415926......