i-like-robots/In-Field-Labels-jQuery-Plugin — comment on commit 92326bd5e774b760c7f15922d4fb8bb07ef0b8c4
File:  line 0
By dcneiner:

Ok – so that block of code def needs to be reworked (Thanks for the perf test!), but this would be a breaking change since you can currently call it on any label and it only gets applied to items it supports. For instance, a label associated with a select item.

But your perf test totally points me in the right direction. I think I'll select first via ID, then filter – which should be considerably faster than the selector I was using. Thoughts on that approach?