ECMAScript 6 New Method find(), findIndex() let numbers = [25, 30, 35, 40, 45]; console.log(number.find(n => n > 33)); // 35, 3보다 큰값 console.log(number.findIndex(n => 33)); // 2, 3보다 큰값을 가지는 index fill() let numbers = [1, 2, 3, 4]; numbers.fill(1); console.log(numbers.toString()); // 1, 1, 1, 1 numbers.fill(1, 2); console.log(number.toString()); // 1, 2, 1, 1 numbers.fill(0, 1, 3); console.log(n..
