追記
コメントにカッコイイ書き方乗っていますので、ぜひ
もっとカッコよくかけないものかね
array = Array.prototype.concat.apply(
[],
[...Array(24).keys()].map(v => {
return [
String(v).padStart(2, '0') + ':' + '00',
String(v).padStart(2, '0') + ':' + '30'
];
})
);
console.log(array);
実行結果
[
'00:00', '00:30', '01:00', '01:30',
'02:00', '02:30', '03:00', '03:30',
'04:00', '04:30', '05:00', '05:30',
'06:00', '06:30', '07:00', '07:30',
'08:00', '08:30', '09:00', '09:30',
'10:00', '10:30', '11:00', '11:30',
'12:00', '12:30', '13:00', '13:30',
'14:00', '14:30', '15:00', '15:30',
'16:00', '16:30', '17:00', '17:30',
'18:00', '18:30', '19:00', '19:30',
'20:00', '20:30', '21:00', '21:30',
'22:00', '22:30', '23:00', '23:30'
]