New Date ("2017-1-19") gets date under IE8 return Nan

Check the relevant information to know:

function Stringtodate (DATESTR) {
if (typeof datestr = = "undefined") return new Date ();
if (typeof datestr = = "Date") return datestr;
var converted = Date.parse (DATESTR);
var mydate = new Date (converted);
if (IsNaN (mydate)) {
Datestr = Datestr.replace (/:/g, "-");
Datestr = Datestr.replace ("", "-");
Datestr = Datestr.replace (".", "-");
var Arys = datestr.split ('-');
Switch (arys.length) {
Case 7:
MyDate = new Date (Arys[0],--arys[1], arys[2], arys[3], arys[4], arys[5], arys[6]);
Break
Case 6:
MyDate = new Date (Arys[0],--arys[1], arys[2], arys[3], arys[4], arys[5]);
Break
Default
MyDate = new Date (Arys[0],--arys[1], arys[2]);
Break
};
};
return mydate;
}

Pro-Test can be used

New Date ("2017-1-19") gets date under IE8 return Nan