// `date` is a `Date` object
const formatYmd = date => date.toISOString().slice(0, 10);
// Example
formatYmd(new Date()); // 2020-05-06function formatDate(date) {
var d = new Date(date),
month = '' + (d.getMonth() + 1),
day = '' + d.getDate(),
year = d.getFullYear();
if (month.length < 2) month = '0' + month;
if (day.length < 2) day = '0' + day;
return [year, month, day].join('-');
}
alert(formatDate('05/08/2015'));
var formattedDate = new Date("yourUnformattedOriginalDate");
var d = formattedDate.getDate();
var m = formattedDate.getMonth();
m += 1; // JavaScript months are 0-11
var y = formattedDate.getFullYear();
$("#txtDate").val(d + "." + m + "." + y);GetDatePattern("MM/dd/yyyy");
function GetDatePattern(pattern)
{
var monthNames=["January", "February", "March", "April", "May", "June",
"July", "August", "September", "October", "November", "December"];
var todayDate = new Date();
var date = todayDate.getDate().toString();
var month = todayDate.getMonth().toString();
var year = todayDate.getFullYear().toString();
var formattedMonth = (todayDate.getMonth() < 10) ? "0" + month : month;
var formattedDay = (todayDate.getDate() < 10) ? "0" + date : date;
var result = "";
switch (pattern) {
case "M/d/yyyy":
formattedMonth = formattedMonth.indexOf("0") == 0 ? formattedMonth.substring(1, 2) : formattedMonth;
formattedDay = formattedDay.indexOf("0") == 0 ? formattedDay.substring(1, 2) : formattedDay;
result = formattedMonth + '/' + formattedDay + '/' + year;
break;
case "M/d/yy":
formattedMonth = formattedMonth.indexOf("0") == 0 ? formattedMonth.substring(1, 2) : formattedMonth;
formattedDay = formattedDay.indexOf("0") == 0 ? formattedDay.substring(1, 2) : formattedDay;
result = formattedMonth + '/' + formattedDay + '/' + year.substr(2);
break;
case "MM/dd/yy":
result = formattedMonth + '/' + formattedDay + '/' + year.substr(2);
break;
case "MM/dd/yyyy":
result = formattedMonth + '/' + formattedDay + '/' + year;
break;
case "yy/MM/dd":
result = year.substr(2) + '/' + formattedMonth + '/' + formattedDay;
break;
case "yyyy-MM-dd":
result = year + '-' + formattedMonth + '-' + formattedDay;
break;
case "dd-MMM-yy":
result = formattedDay + '-' + monthNames[todayDate.getMonth()].substr(3) + '-' + year.substr(2);
break;
case "MMMM d, yyyy":
result = todayDate.toLocaleDateString("en-us", { day: 'numeric', month: 'long', year: 'numeric' });
break;
}
} function formatDate(date) {
var d = new Date(date),
day = '' + d.getDate(),
month = '' + (d.getMonth() + 1),
year = d.getFullYear();
if (month.length < 2) month = '0' + month;
if (day.length < 2) day = '0' + day;
return [day, month, year].join('-');
}