I found this solution for a case-insensitive jQuery
I found another solution of the case-insensitive search on Google (see Eric Phan) which varies slightly from the one I was originally using.
return (a.textContent || a.innerText || "").toLowerCase().indexOf(m.toLowerCase())>=0;
Comparing the two, you can see Eric Phan's solution accesses the DOM attributes directly and uses
toLowerCase() instead of
toUpperCase(). The latter doesn't really matter, but the former is what really improved the performance of the case-insensitive search. Just changing the original solution to use
(a.textContent || a.innerText || "") instead of
jQuery(a).text() made all the difference!
Now I'm a bit curious, so here's a follow up question: What's the deal with
jQuery.text()? Why's it so slow? I have my assumptions, but I'd love to hear what the experts have to say.
Lastly, thanks to everyone who responded. I appreicate your help. =)