NaN when parsing value returned by parseInt() and toLocaleString Internet Explorer

Question

alert(parseInt(new Date().toLocaleString('es', {month:'numeric'})));

This code always return 'NaN' on IE

why is this?

how can i solved only using vanilla javascript.

Only modern browsers (including IE11) support locale and options parameters, https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toLocaleString — Ram, Oct 09 '14 at 18:20
Which version of IE? Are you sure the call is compatible with the version of IE that you are using? — Rob M., Oct 09 '14 at 18:20
To get the current "month number": `(new Date().getMonth()) + 1`. Presumably `new Date().toLocaleString('es', {month:'numeric'})` does not return a string that starts with a digit, so `parseInt` returns `NaN`. — Felix Kling, Oct 09 '14 at 18:21
Still interesting that this won't work. I can reproduce it in IE11. The string *looks* like `"10"` but when compared with `"10"` yields false. — Andrew Whitaker, Oct 09 '14 at 18:23
I think the character is a [Left-to-right mark](http://en.wikipedia.org/wiki/Left-to-right_mark) upon further inspection, in case anyone is interested... And here's an explanation of what's going on: http://stackoverflow.com/q/25574963/497356 — Andrew Whitaker, Oct 09 '14 at 18:32

score 3 · Accepted Answer · answered Oct 09 '14 at 18:22

3

var date = new Date();
var month = date.getMonth() + 1; //Months are zero based

This should work for you to get the month.

answered Oct 09 '14 at 18:22

brso05

1 Answers1