Does jQuery do any kind of caching of “selectors”?

Question

For example, will the first piece of code perform a full search twice, or is it smart enough to cache results if no DOM changes have occurred?

if ($(\"#navba         


        

Answer 1

There is a nice plugin out there called jQache that does exactly that. After installing the plugin, I usually do this:

var $$ = $.q;

And then just

$$("#navbar .heading").hide();

The best part of all this is that you can also flush your cache when needed if you're doing dynamic stuff, for example:

$$("#navbar .heading", true).hide(); // flushes the cache and hides the new ( freshly found ) #navbar .heading

And

$$.clear(); // Clears the cache completely