For a moment browsers were pretty good at this because pages were still static enough that browsers could keep track of elements over page reload. But now that

For a moment browsers were pretty good at this because pages were still static enough that browsers could keep track of elements over page reload. But now that everything is dynamically generated by a few megabytes of opaque javascript? It's a much trickier problem. But "luckily" there's LocalStorage these days so website devs can just go and reimplement the feature…