I see that in different plugins and codes, but I don't understand what does that function... In the jQuery api isn't referenced!
apply
calls a function with a set of arguments. It's not part of jQuery, it's part of core Javascript. However, there is mention of it in the jQuery docs:
http://docs.jquery.com/Types#Context.2C_Call_and_Apply
Syntax:
somefunction.apply(thisObj, [argsArray])
The above calls the function somefunction
, setting this
to thisObj
within the function's scope, and passing in the arguments from argsArray
as the arguments to the function.