Comments on: Valid HTML

Valid HTML

AlexReynolds — Thu, 14 Apr 2005 04:14:05 -0800

What HTML tags are allowed on the three main Metafilter sections? (I dare not experiment for obvious reasons.)

By: Bugbread

Bugbread — Thu, 14 Apr 2005 05:02:06 -0800

I doubt Matt has them all memorized, so it would probably help to list the ones we know of so far.
<i>
<b>
<img src>
<a href>
<blink>
<marquee>
<blockquote>
<ul>
<li>
<small>
<strike>

By: jpburns

jpburns — Thu, 14 Apr 2005 05:16:15 -0800

... some more...

<code>
<pre>
<xmp>
<strong>
<em>

By: amberglow

amberglow — Thu, 14 Apr 2005 05:24:58 -0800

~~s alone also works~~

By: quonsar

quonsar — Thu, 14 Apr 2005 05:30:47 -0800

underline <u>

By: quonsar

quonsar — Thu, 14 Apr 2005 05:32:10 -0800

big <big><big><big>

By: themadjuggler

themadjuggler — Thu, 14 Apr 2005 05:35:52 -0800

Since <ul> and <li> work, so do the following:

<ol>
<dl>
<dt>
<dd>

By: Slack-a-gogo

Slack-a-gogo — Thu, 14 Apr 2005 05:50:44 -0800

Is blink disabled? I tested the ones I hadn't tried in preview (at great fear of actually hitting post by mistake) and nothing happened with that one.

By: andrew cooke

andrew cooke — Thu, 14 Apr 2005 06:15:34 -0800

span is dropped, iirc (at least in the main pages; anything goes in the user pages, afaik)

By: Bugbread

Bugbread — Thu, 14 Apr 2005 06:26:49 -0800

Slack-a-gogo : "Is blink disabled?"

It works in Firefox but not IE.

By: crunchland

crunchland — Thu, 14 Apr 2005 06:27:22 -0800

^<sup> and _<sub>
<q>
<center>
<code>

<dd>

Don't know how many of these will get stripped once I press post, though.

By: gleuschk

gleuschk — Thu, 14 Apr 2005 07:16:40 -0800

By: stavrosthewonderchicken

stavrosthewonderchicken — Thu, 14 Apr 2005 07:17:50 -0800

By: kirkaracha

kirkaracha — Thu, 14 Apr 2005 07:47:13 -0800

< q>quote < / q>

By: jpburns

jpburns — Thu, 14 Apr 2005 07:48:10 -0800

I did find a problem with <code> and <pre> when I was trying to post snippets of code in this AskMe posting.

A weird "br>" would get stuck in a line... some post-processing thingie that Matt probably wrote. I think it's busted...

By: Mean Mr. Bucket

Mean Mr. Bucket — Thu, 14 Apr 2005 07:49:51 -0800

Metafilter mad libs:

Bucket to the and in the .

By: odinsdream

odinsdream — Thu, 14 Apr 2005 09:45:51 -0800

Somewhere in MetaTalk, there's a thread that went unanswered. The author of the thread then continued to make little comments and stories in the thread, making fun of the fact that nobody had answered it once it dropped off the front page.

I can't find the thread, but it included a scrolling marquee with a solid bright green background color applied. So, somehow you can do colors. Beats me though.I think I can do the scrolling marquee though...

By: Stynxno

Stynxno — Thu, 14 Apr 2005 09:59:26 -0800

don't put html in the tagging part of your post.

By: AwkwardPause

AwkwardPause — Thu, 14 Apr 2005 10:02:58 -0800

is this what you were looking for, odinsdream?

courtesy of Jim Jones

By: monju_bosatsu

monju_bosatsu — Thu, 14 Apr 2005 10:05:32 -0800

Boy, that's annoying.

By: jasper411

jasper411 — Thu, 14 Apr 2005 10:07:46 -0800

Odinssdream - it was a post by the god-like Jim Jones highlighted to the community by the goddess-like naxosaxur.

By: Ryvar

Ryvar — Thu, 14 Apr 2005 10:09:49 -0800

This seems a good place to post this:

To write the ampersand in   one has to use &
So to write   you would have to write &nbsp; .
Note that when you hit preview your & will be eaten, so you may wish to use copy/paste accordingly.

By: amberglow

amberglow — Thu, 14 Apr 2005 10:14:19 -0800

oh, so that Internet2 thing does all this too, just twice as fast?

By: Lynsey

Lynsey — Thu, 14 Apr 2005 10:24:36 -0800

I ♥ you all.

By: odinsdream

odinsdream — Thu, 14 Apr 2005 10:32:19 -0800

Yep, that's it! This certainly has to be the most annoying of all the allowable tags. Bravo Jim Jones.

By: monju_bosatsu

monju_bosatsu — Thu, 14 Apr 2005 10:36:05 -0800

By: monju_bosatsu

monju_bosatsu — Thu, 14 Apr 2005 10:36:43 -0800

I'm gonna have to start using more horizontal rules in my posts.

By: Capn

Capn — Thu, 14 Apr 2005 10:51:26 -0800

The Capn once said:
<cite> works too.

By: raedyn

raedyn — Thu, 14 Apr 2005 10:51:43 -0800

odiesdream - Especially when on a single line like that. Nearly unreadable.

By: raedyn

raedyn — Thu, 14 Apr 2005 10:54:03 -0800

d'oh! That was meant to be odinsdream. But now evertime I see odinsdream, I'm going to think of garfield and scrolling lines on hot pink. eek!

By: andrew cooke

andrew cooke — Thu, 14 Apr 2005 11:10:22 -0800

jpburns - that was because you had a < in your code/text.

By: mendel

mendel — Thu, 14 Apr 2005 11:10:48 -0800

><//*><*\\><><//*><*\\><><//*>

By: andrew cooke

andrew cooke — Thu, 14 Apr 2005 11:14:33 -0800

Note that when you hit preview your & will be eaten, so you may wish to slap Matt with a wet haddock

well, i wouldn't put it quite like that....

on preview: ok, big prize for the first to implement frogger in dhtml...

By: Bugbread

Bugbread — Thu, 14 Apr 2005 11:24:21 -0800

Let's review (in alphabetical order):

<a href>
<b>
<big>
<blink>
<blink>
<blockquote>
<br>
<button>
<button>
<center>
<code>
<code>
<dd>
<dd>
<dl>
<dt>
<em>
<form>
<hr>
<i>
<img src>
<input>
<li>
<marquee direction="up">
<marquee>
<ol>
<option>
<pre>
<q>
<q>
<s>
<select>
<small>
<strike>
<strong>
<u>
<ul>
<xmp>

By: gleuschk

gleuschk — Thu, 14 Apr 2005 11:31:37 -0800

mendel, that is (and I don't use this term lightly) rad.

By: graventy

graventy — Thu, 14 Apr 2005 11:52:19 -0800

I dare not experiment for obvious reasons.

Jesus Christ, Alex. Matt gonna ban you for using blink, or something? Just pick an old MeTa thread, (or hell, a current one) and blink to your heart's conent.

By: mcwetboy

mcwetboy — Thu, 14 Apr 2005 12:03:38 -0800

Add <acronym> and <abbr> to the list. I use those all the time.

By: Bugbread

Bugbread — Thu, 14 Apr 2005 12:11:13 -0800

Hmm...Several of those entries above were doubled up.

mcwetboy, thanks for the acronym and abbr codes, I wasn't aware of those. Kinda cool.

So, with those added, and the doubled up ones removed:

<a href>
<abbr> (Doesn't work in IE)
<acronym>
<b>
<big>
<blink> (Doesn't work in IE)
<blockquote>
<br>
<button>
<center>
<code>
<dd>
<dl>
<dt>
<em>
<form>
<hr>
<i>
<img src>
<input>
<li>
<marquee direction="up">
<marquee>
<ol>
<option>
<pre>
<q>
<s>
<select>
<small>
<strike>
<strong>
<u>
<ul>
<xmp>

By: Ryvar

Ryvar — Thu, 14 Apr 2005 12:38:21 -0800

Mendel that is the only, and I mean only good use of the marquee tag in the history of MeFi. Hell, on the entire Internet.

By: deborah

deborah — Thu, 14 Apr 2005 12:42:33 -0800

mendel wins!

By: AlexReynolds

AlexReynolds — Thu, 14 Apr 2005 12:56:23 -0800

Thanks, everyone! What a fun thread.

By: me3dia

me3dia — Thu, 14 Apr 2005 14:08:35 -0800

mendel wins!

At least until someone trumps him by taking his idea and making an ASCII Frogger screen out of it.

By: mathowie

mathowie — Thu, 14 Apr 2005 14:26:13 -0800

Instead of talking about what I allow, I approach the coding by allowing all, and merely blocking truly nefarious things while trusting users to act in good faith.

So you can do anything on the front page, but the following is stripped out:

paragraph tags, since I don't want to encourage people to take up too much vertical space

script tags, since there is very little chance outside of cross-site-scripting hacks that it would be used.

inline styles, also for various cross-site-scripting hack reasons.

Pretty much everything else is allowed, but that doesn't mean you should use it all.

By: grouse

grouse — Thu, 14 Apr 2005 15:24:27 -0800

AOL! Mendel wins!!!

By: dg

dg — Thu, 14 Apr 2005 15:35:51 -0800

... blocking truly nefarious things while trusting users to act in good faith.

Ah, I remember when I was young enough to think like this, too.

By: dfowler

dfowler — Fri, 15 Apr 2005 08:29:06 -0800

Great thread, AlexReynolds.

By: odinsdream

odinsdream — Fri, 15 Apr 2005 13:32:09 -0800

Well, here's my best offering of primitive marquee animation. A lot more seems possible, though, especially with layered blitting like this. Each marquee has as many BRs as necessary for the "layers" in the animation, and with an up or down scroll, each line is shown in sequence one at a time. This one is offset line by line, each marquee containing eight blank frames and one number frame. The topmost has the first frame filled in and eight blanks following, while the second one down has the second frame filled in and a blank first and 2-8th frame... and so on.

1

2

3

4

5

6

7

8

9

By: odinsdream

odinsdream — Fri, 15 Apr 2005 13:32:35 -0800

I screwed up line 9 somehow.

By: Peter H

Peter H — Fri, 15 Apr 2005 14:13:14 -0800

Ha, That's pretty damn neat, odinsdream!

By: nobody

nobody — Tue, 19 Apr 2005 12:12:38 -0800

|
|
|
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|

O
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|
|

|

|
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|

^
|
|
|
|

5

|
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7

8

|
|
|
|

(this has been in preview on a hidden tab at work for four days now. with everyone gone, i might as well post it)

By: nobody

nobody — Tue, 19 Apr 2005 12:20:34 -0800

when i was little my friend had a sandbox in her backyard.

|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|
|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-
|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-
|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-
|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-
|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-
|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-
|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-
|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-
|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-
|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-
|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-

By: nobody

nobody — Tue, 19 Apr 2005 12:33:29 -0800

and her mommy had a loom.

/\/\/\/\/\/\/\/\/\/\
/\/\/\/\/\/\/\/\/\/\
/\/\/\/\/\/\/\/\/\/\

By: raedyn

raedyn — Tue, 19 Apr 2005 15:40:51 -0800

eeek! the sandbox one hurts my eyes.

By: nobody

nobody — Wed, 20 Apr 2005 12:58:01 -0800

sometimes the sun reflecting off the sandbox would hurt our eyes,
so we'd dig up these rings and play with them for a while.

~~~O~~~

By: nobody

nobody — Wed, 20 Apr 2005 13:00:20 -0800

you'd have to wrap the thin curly metal bits around your finger
and then you could spin it so fast
you couldn't tell which way it was going and which part was where.

~~~O~~~~O~~~~~~~~~~~~~O~~~~~~~O~~~~~~O~~

By: nobody

nobody — Wed, 20 Apr 2005 13:25:44 -0800

and if you spun it fast enough, a whole number of special things could happen.

L~~O~~~~O~~~~~~O~~~~~~O~~~~K~~O~~~~~~O~~

L~~L~L~~O~~O~~~O~~O~~~O~K~~K~~K~~!~!~!~~

~~~O~~~~O~~~~O~~~~~~~~~O~~~~~~~O~

By: nobody

nobody — Thu, 21 Apr 2005 09:30:49 -0800

one day we were playing and saw this dirty bird flying around.

~~~L~L~~~~O~~O~~O~~~O~~~~O~~~~~~L~L~

By: nobody

nobody — Fri, 22 Apr 2005 15:03:55 -0800

Step right up. Hit the target, win a prize:

O~L~~O~~O~~~O~~~~O~~~O~O~~O~~~O~~~~O~~~O~L~

By: nobody

nobody — Fri, 22 Apr 2005 16:52:19 -0800

diary entry: the marquee tag is interpreted very differently in different browsers. In firefox on a PC apparently the browser won't interpret two marquee tags on the same line, so an artificial linebreak is inserted. (thus april 20-22 are broken and the sandbox and loom are double-spaced). In explorer on a mac the height variable is interpreted differently (so the april 19th junk post before the sandbox post is broken and odinstream's post looks like just a line of numbers scrolling smoothly upward.)
at work i've been using safari on a mac:
in safari on the mac a linebreak between two marquee instances doesn't introduce an additional space between each line, so the sandbox is more highly compressed and the loom feels much more like interlocking \/\/\/\/\/\/\'s. all the rest are single character-width marquees lined up next to each other. explorer on pc is closest. i'll have to test firefox on a mac next week.

oh, the fishtank looks nice in firefox/pc. in safari/mac, there are two marquees per line and so the fish collide and the brown bar looks like a mistake.

By: dfowler

dfowler — Tue, 26 Apr 2005 12:27:23 -0800

Great work, nobody.

By: nobody

nobody — Tue, 26 Apr 2005 14:33:43 -0800

Proof of concept (variations to come):
OO
|
~
__O~~~~~~~__
_~~~~~~~O_~O~~~~~~_
~~~~~~O~___~~O~~~~~
_~~~~~O~~_~~~O~~~~_
__~~~~O~~~__

This won't work in firefox/pc. I still haven't tested firefox/mac.
(and thanks for the citation.)

By: nobody

nobody — Tue, 26 Apr 2005 14:51:49 -0800

More or less the same concept, but should work in any browser:

~~O~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~O~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~O~~~
~~~~~
~~~~~
~~~~O
~~~~~
~~~~~
~~~~~
O~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~O~
~~~~~
~O~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~O~~
~~~~~
~~~~~
~~~~~

By: nobody

nobody — Tue, 26 Apr 2005 14:55:28 -0800

~~O~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~O~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~O~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~O~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
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~~~O~
~~~~~
~~~~~
~~~~~
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~O~~~
~~~~~
~~~O~
~~~~~
~~~~~
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~~~~~
~O~~~
~~~~~
~~~O~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~O~~~
~~~~~
~~~O~
~~~~~
~~~~~
~~~~~
~~~~~
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~O~~~
~~~~~
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~~~~O
~~~~~
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O~~~~
~~~~~
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~~~~O
~~~~~
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O~~~~
~~~~~
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O~~~~
~~~~~
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~~~~~
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O~~~~
~~~~~
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~~~O~
~~~~~
~O~~~
~~~~~
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~~~O~
~~~~~
~O~~~
~~~~~
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~~~O~
~~~~~
~O~~~
~~~~~
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~~~O~
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~O~~~
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~~O~~
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~~O~~
~~~~~
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~~~~~
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~~O~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~O~~
~~~~~
~~~~~
~~~~~

By: nobody

nobody — Tue, 26 Apr 2005 15:03:42 -0800

In firefox/pc, this would be the same as the above post in safari/mac or explorer/pc:

~~O~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~O~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~O~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~O~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~~~~~~
~~~O~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~O~~~
~~~~~
~~~O~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~O~~~
~~~~~
~~~O~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~O~~~
~~~~~
~~~O~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~O~~~~~~~~
~~~~~
~~~~O
~~~~~
~~~~~
~~~~~
O~~~~
~~~~~
~~~~~
~~~~~
~~~~O
~~~~~
~~~~~
~~~~~
O~~~~
~~~~~
~~~~~
~~~~~
~~~~O
~~~~~
~~~~~
~~~~~
O~~~~
~~~~~
~~~~~
~~~~~
~~~~O
~~~~~
~~~~~
~~~~~
O~~~~
~~~~~~~~~~
~~~~~
~~~~~
~~~O~
~~~~~
~O~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~O~
~~~~~
~O~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~O~
~~~~~
~O~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~O~
~~~~~
~O~~~
~~~~~
~~~~~~~~~~
~~~~~
~~~~~
~~~~~
~~O~~
~~~~~
~~~~~
~~~~~
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~~~~~
~~~~~
~~~~~
~~O~~
~~~~~
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~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~O~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~~~~
~~O~~
~~~~~
~~~~~
~~~~~

By: nobody

nobody — Fri, 13 May 2005 11:33:44 -0800

To be continued...