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So if you go to the top of the page,

Feb. 28, 2017 by Paul Fletcher

So if you go to the top of the page, and you see a video showing how to use this new feature, you might think that the browser is not going to use it. But if you click on an image in a video, it won't load. As of right now, browsers like Chrome don't have a good way to synchronize images being loaded—though the WebKit team does, and they've been improving on it for some time. The next step is to see if we can convince the browser to re-optimize the browser's cache, or to disable it altogether.

The goal is to put the browser back on track now, but to be honest, I'm not sure if we'll have a lot of time to get there. The big takeaway is that most of the time, JavaScript is going to take a back seat.

The idea behind bfcache comes from the fact that it allows for more control over how the browser looks when it's reloaded in the browser and in a browser that doesn't have it. A new bfcache is supposed to take care of this. The browser might re-implement its cache, but the page won't be updated—it won't be updated as usual or as fast as you would expect. This is likely the biggest win for browsers, given that if you're using a mobile app, your page in this new cache will be updated to reflect this change. But it's also possible that if you have a long-running app, you'll want to update it to the new cache when you're done loading it. That way, your page's performance won't be affected, too.

That's probably a good thing to hear from Mozilla, the world's largest browser developer, because it's an important question. It's also clear that the web is now a lot more open and collaborative than it has been in a long time. The world's biggest browser developer has said that he wants to see "open source software that's not just built on top of existing data." Mozilla wants to give developers a way to open-source software that they can use to build better browsers that can use JavaScript to do the same things.