3 ms·My understanding that doesn't work on old versions of IE.by Jwarder 7y agoMy understanding that doesn't work on old versions of IE.will4274 7y agoYeah, because the WHATWG folks changed the spec after 20 years. Not because IE implemented the wrong thing. Not surprising folks in this thread remember the old spec, which was valid for longer.megous 7y agoTrue, not even IE11.