URL changes as you scroll

[ergophobe]

RC just posted this article

https://www.bloomberg.com/news/articles/2017-02-17/philly-soda-sellers-say-tax-has-reduced-sales-by-as-much-as-50

When I scroll down the page, I was seeing another article on the same page and thought it odd from an SEO perspective - two completely unrelated articles concatenated. Then I noticed that when the new article dominated the above the fold area, the URL in my browser updated and the favicon changed

https://www.bloomberg.com/politics/articles/2017-02-17/conservatives-object-to-obamacare-replacement-s-tax-credits

When I look at it in Chrome Inspector, they are two separate pages in the sense that I can't scroll from one to the next. But when I look in the Sources tab of the inspector, I see both docs, but they're both empty.

I've seen this style of article concatenation before, but I've never seen the URL update like that. Have I just been missing it all along, or is this new?

In my brief look, it was immediately obvious what's happening. There are a couple of data:application filenames that have massive Base64 encoded info (4000+ chars). But other than that, everything was pretty "normal"

[rcjordan]

New, I think. Just today, I also glimpsed a headline morphing as I scrolled, just before it went off the top.  Might have been Bloomberg, too.

[JasonD]

HTML5 Pushstate and ReplaceState

https://css-tricks.com/using-the-html5-history-api/

[ergophobe]

Damn!

OK, so right click, open the inspector, switch to the console and type

history.replaceState(null,null,'/damn-Jason-knows-everything');

and look at the URL. So simple. I'm surprised I haven't noticed it earlier.

[JasonD]

heh

I promise you I don't, but I do know lots of pretty useless small and random crap