[jQuery] $ javascript syntax

i tried searching the web, but couldnt find $ notation for javascript, but presumably it is javascript syntax as per the following example syntax: $(document).ready(function() could someone please shine some light on this for me..? thx, Jerome.

[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