Math , 난수

난수

Math.random(): 0과 1사이의 난수 발생

Math.floor(Math.random() * 100) + 1;

- 1부터 100사이의 난수가 리턴됨

- 100대신에 원하는 범위의 최대값을 넣으면 난수를 구할 수 있음

 

 

Math 매서드 종류 및 설명

• Math.abs(x): returns the absolute value of x

console.log(Math.abs(-5)); // Output: 5

 

• Math.sqrt(x): returns the square root of x

console.log(Math.sqrt(16)); // Output: 4

 

• Math.pow(x, y): returns x raised to the power of y

console.log(Math.pow(2, 3)); // Output: 8

 

• Math.random(): returns a random number between 0 and 1

console.log(Math.random()); // Output: a random number between 0 and 1

 

• Math.floor(x): returns the largest integer less than or equal to x

console.log(Math.floor(3.14)); // Output: 3

 

• Math.ceil(x): returns the smallest integer greater than or equal to x

console.log(Math.ceil(3.14)); // Output: 4

 

• Math.round(x): rounds x to the nearest whole number

console.log(Math.round(3.14)); // Output: 3

 

• Math.min(x1, x2, ...): returns the smallest number from a set of numbers

console.log(Math.min(5, 2, 7, 1, 8)); // Output: 1

 

• Math.max(x1, x2, ...): returns the largest number from a set of numbers

console.log(Math.max(5, 2, 7, 1, 8)); // Output: 8