js format de date aaaa-mm-jj
yourDate.toISOString().split('T')[0]
Format DateTime.Maintenant à yyyy-mm-dd c#
var dateString1 = DateTime.Now.ToString("yyyyMMdd");
var dateString2 = DateTime.Now.ToString("yyyy-MM-dd");
Console.WriteLine("yyyyMMdd " + dateString1);
Console.WriteLine("yyyy-MM-dd "+ dateString2);
Convertir une date aaaa mm jj
const formatYmd = date => date.toISOString().slice(0, 10);
formatYmd(new Date());
python date du jj/mm/aaaa jj-mm-jj
lastconnection = datetime.strptime("21/12/2008", "%d/%m/%Y").strftime('%Y-%m-%d')
python datetime au format aaaa-mm-jj
from datetime import datetime
now = datetime.today().isoformat()
print(now) # '2018-12-05T11:15:55.126382'