Question

I am almost new to JQuery. So please forgive if it is trivial.

What does this mean in JQuery: var Utilities = $([]);

Is this like defining an array? Any links to an example?

Some more info: After defining that in the code I see:

Utilities.Message = ' some message';
Utilities.function1 = function(message) { some code };
Utilities.function2 = function() { some code};

calling the method: Utilities.function2();

Thanks,
-Sara.

Answer 1

$([]) would use the jQuery( elementArray ) signature to create an empty jQuery collection.

The jQuery() signature, that now does the same, wasn’t available until jQuery 1.4, so jQuery([]) could be used before that and can still be used to be compatible with older versions of the library.

Prior to 1.4, jQuery() would do the same as jQuery(document).