I've got some code that needs to loop through about ten thousand element IDs and do stuff to them. It's really simpler than it sounds -- -- That works fine with a number like 10000. But the number i ...

As for it's importance. Well, maybe it has something to do with optimizations? (well, once you've found an id, there's technically no need to look for it anyfurther). Also, id's weigh alot in the ...