isInteger let num1 = 1; let num2 = 2.2; >> Number.isInteger(num1) //true Number.isInteger(num2) //false
let num1 = 1; let num2 = 2.2; >> Number.isInteger(num1) //true Number.isInteger(num2) //false
Math.round(숫자) let num = 24.14567 (Math.round(num * 100) / 100) >> 24.15
let num = 24.14567 (Math.round(num * 100) / 100) >> 24.15
실수형숫자.toFixed(자릿수) let num = 24.14567 num.toFixed(2) >> 24.15
let num = 24.14567 num.toFixed(2) >> 24.15