Mobile Safari on iOS crashes on big pages

Question

I have a problem where Mobile Safari crashes when loading and manipulating the DOM with jQuery when the pages get too big.

I get the same problem on both iPhone and

Answer 1

I actually found the problem. It wasn't with JS as I thought, but with the CSS. I added class to make a CSS transition to fade in some elements. For anonymous users these elements had display: none; and probably never ran the opacity transition.

The strange thing is that the transitions was on exactly two elements. So why would this only crash on long threads with 100+ comments?

So the bottom line is: -webkit-transition crashed the page on mobile safari.