I've ran into a possible bug with IE where calling the JavaScript .length function returns a value that is off by 1 if/when the string was derived from .toLocaleString().
var d = new Date();
var locale = navigator.language;
var month = d.toLocaleString(locale, { month: "long"});
// month.length will return the length of the month string +1
//(eg: if month = "March", month.length will return 6.)
Interestingly, the code example of above will return true (in IE) for the following: (month[0] should be "M")
month[0] == "";
month[1] == "M";
month[2] == "a";
month[3] == "r";
month[4] == "c";
month[5] == "h";
In my particular case, this is causing a problem where I need to .slice() the month. Example: If the month is March, then IE will return "Ma" for month.slice(0,3) instead of "Mar".
Is this a known bug with IE? Is there a fix and/or workaround for this problem?
Run this fiddle in IE and Chrome/Firefox/Safari and notice how the month.length is wrong in IE.
My Environment:
OS: Win Server 2012 R2
IE Version: 11.0.9600.18231 (Update Versions: 11.0.29)
Locale: English/US