function AddDays(date, days) {
var dd = date.split(/ |-|:/g);
var nd = new Date(dd[0],dd[1]-1,dd[2],!!dd[3]?dd[3]:0,!!dd[4]?dd[4]:0,!!dd[5]?dd[5]:0);
nd = nd.valueOf();
nd = nd + days * 24 * 60 * 60 * 1000;
nd = new Date(nd);
var y = nd.getFullYear();
var m = nd.getMonth() + 1;
var d = nd.getDate();
if (m <= 9) m = "0" + m;
if (d <= 9) d = "0" + d;
var cdate = y + "-" + m + "-" + d;
return cdate;
}
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AddDays('2014-1-20 11:09:00',5)
"2014-01-25"
AddDays('2014-1-20 11:09',5)
"2014-01-25"
AddDays('2014-1-20 11',5)
"2014-01-25"
AddDays('2014-1-20',5)
"2014-01-25"
date = date.replace(/-/g,'/');
var nd = new Date(Date.parse(date)),
y = nd.getFullYear(),
m = nd.getMonth() + 1,
d = nd.getDate() + days;
if (m <= 9) m = "0" + m;
if (d <= 9) d = "0" + d;
var cdate = y + "-" + m + "-" + d;
return cdate;
}
alert(AddDays('2014-1-20 11:08:55',7));