#半角数字のまとめ
半角数字
/\A[0-9]+\z/
###日付
半角数字(ハイフン・小数点)
/\A\d{4}-\d{2}-\d{2}\z/
###時間
24時間表記
/\A([01][0-9]|2[0-3]):[0-5][0-9]\z/
#####参考にしたサイト
https://teratail.com/questions/145336
https://teratail.com/questions/61764
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