[...Array(10)].map((_, i) => 4 + i * 2); //=> [4, 6, 8, 10, 12, 14, 16, 18, 20, 22] Array.from(Array(10)).map((_, i) => 4 + i * 2); //=> [4, 6, 8, 10, 12, 14, 16, 18, 20, 22] Array.from(Array(10).keys()).map(i => 4 + i * 2); //=> [4, 6, 8, 10, 12, 14, 16, 18, 20, 22] [...Array(10).keys()].map(i => 4 + i * -2); //=> [4, 2, 0, -2, -4, -6, -8, -10, -12, -14] Array(10).fill(0).map((_, i) => 4 + i * 2); //=> [4, 6, 8, 10, 12, 14, 16, 18, 20, 22] Array(10).fill().map((_, i) => 4 + i * -2); //=> [4, 2, 0, -2, -4, -6, -8, -10, -12, -14]
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