[jQuery] javascript syntax question

[jQuery] javascript syntax question


i was looking for an explanation for some of the syntax that jquery
uses but i couldn't find it anywhere (or it seems to be). Anyways the
syntax that i was looking for is as follows:
(function(){.....})();
I am assuming that it is a javascript syntax but i don't know what it
is called. Also If someone could explain to me what the syntax is
actually doing it will be helpful.
Thanks