Question

Possible Duplicate:
Location of parenthesis for auto-executing anonymous JavaScript functions?

I’m curious now that I have seen these two similar examples:

(function ($) {
  // code
}(jQuery));

and

(function ($) {
  // code
})(jQuery);

Is there any difference and if so what?

Answer 1

There’s no difference, they do the same thing. You need the parens around the anonymous function, but whether you put the parens triggering the call within those or outside them doesn’t matter. Some feel the former is more “correct” (though I’ve never heard a strong rationale, just Crockford’s assertion that it’s more clear, which I contest). The latter (in my experience) is much more common.