jQuery UI: Two semicolons after logical expression with function wrapper

Question

I was looking at some jQuery UI code, a found a weird behavior there:

jQuery.ui||(function(a){ /*... */ })(jQuery);;

The logical OR is clear for me, the function wrapper (still searching the correct name for it), too, but why two semicolons?

Thanks in advance

Vincent

EDIT: Just found a another weird thing: In the version on google apis is only one semicolon. But when you create your on build on http://jqueryui.com/download, there are two semicolons.

Probably a build error. Something that gets omitted between the two semicolons? — Jakob Kruse, Apr 27 '10 at 15:42

score 1 · Accepted Answer · edited May 23 '17 at 10:27

1

Breaking it down:

// make sure that any previous statements are properly closed
// this is handy when concatenating files, for example
; 
// Call the jQuery.ui object, or, if it does not exist, create it
jQuery.ui || (function($) {

reference

edited May 23 '17 at 10:27

Community

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answered Aug 05 '11 at 14:20

AlexStack

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score 0 · Answer 2 · answered Apr 26 '10 at 18:59

0

Typo? I cannot think of any valid reason.

answered Apr 26 '10 at 18:59

Diodeus - James MacFarlane

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score 0 · Answer 3 · answered Apr 26 '10 at 18:59

0

That must either be a bug or a misunderstanding. Two consecutive semicolons do not make sense.

answered Apr 26 '10 at 18:59

Jakob Kruse

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jQuery UI: Two semicolons after logical expression with function wrapper

3 Answers3