var arr = ['1', '2', '3', '4', '5', '6', '7', '8', '9', '10']; arr.reverse(); //["10", "9", "8", "7", "6", "5", "4", "3", "2", "1"]
var arr = ['1', '2', '3', '4', '5', '6', '7', '8', '9', '10']; arr.map(Number); //[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]