Most modern browsers handle Number.toLocaleString correctly. That is to say, if you specify a locale, the number should be formatted accordingly.
var number = 1000;
number.toLocaleString(); // Because my system defaults to English, it will result with "1,000"
number.toLocaleString('en'); // Same thing here, I am just specifying English.
number.toLocaleString('fr'); // French is different, though.
// Here is where things get interesting.
// Most modern browsers should return "1 000" (the correct french localization)
// Some browsers (IE8 and below, Safari) appear to get confused when localizing to other languages. So, in my little example, printing out a localized number for any locale besides 'en' provides inconsistent behavior. This small snipped aims at fixing this problem with the least intrusive way.
1234..toLocaleString('de');
// returns: 1.234
(1234.25).toLocaleString('fr');
// returns: 1 234,25
var temp = 1234.25;
temp.toLocaleString('gb');
// returns: 1,234.25Run: grunt or grunt jasmine
This shim is BSD licensed. Hope this helps out! 🐢