What is it for?

[kl23]

I guess it should be defaults[0] = defaults[0].replace(/(\d+)(th|rd|nd|st)/, '$1'); ??

https://github.com/longbill/jquery-date-range-picker/blob/23cbf1fca097a9665e310a1054081f5cb8e8bd72/src/jquery.daterangepicker.js#L1319

[holtkamp]

Why do you think that? Do you have an example? If so: can you provide it in a Pull Request?

[kl23]

by the regular expression, it seems that it aims at removing the ordinal suffixes after a number. e.g. 1st 2nd 3rd 4th ...

I am not really sure about it. Any advise?

[holtkamp]

by the regular expression, it seems that it aims at removing the ordinal suffixes after a number. e.g. 1st 2nd 3rd 4th ...

indeed, but what values (defaults) could be used as input? No idea how this part works and whether "rd" would be a string that is used...

Also see https://github.com/longbill/jquery-date-range-picker/issues/6

[kl23]

After some more study on the code, I believe that it purposely support Do in the format string such that, for example: DDo MMM YYYY will be temporarily stored in ___format and is replaced to DD MMM YYYY. It then remove all possible ordinal suffixes, i.e. st, nd, rd and th, so that the format string works as normal cases.

[holtkamp]

Mm, ok, any more information in this Do formatting part? Can't find anything quickly...

http://www.mattkruse.com/javascript/date/

I am hesitant in changing / fixing stuff that we do not completely understand and is not broken.

[kl23]

@holtkamp you're right, just keep it as an information in case it breaks after years.

and, information for who may visit here. Do formating is supported in moment https://momentjs.com/docs/

[holtkamp]

Thanks for understanding! Closing issue