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For amusement, I tried inputting <applet>, <center>, <font>, <marquee>, and <object>, but the form declared them all invalid. I vividly remember using these ove

For amusement, I tried inputting <applet>, <center>, <font>, <marquee>, and <object>, but the form declared them all invalid. I vividly remember using these over a decade ago. There are a few sites still using <frame> and <frameset>, but both are marked as invalid.

pvorb 2y ago
<object> works, but I was surprised as well that the others don't. It was really hard for me to come up with many tags that are still allowed.
TheRealPomax 2y ago
Correctly: almost all of them were removed from the HTML spec many years ago (but not <object>, that's still a valid HTML5 element). But: invalid according to the spec doesn't mean it won't do something in a browser, browsers aren't pure spec implementations, they're applications used by humans to view content made by humans =)
Izkata 2y ago
It also doesn't like <blink> and <marquee>
CSMastermind 2y ago
> There are a few sites still using <frame> and <frameset>, but both are marked as invalid. Those are invalid now? Well more useless knowledge accumulating in my brain I guess.