BBCode
This article needs additional citations for verification. (April 2011) |
Development status | Active |
---|---|
Operating system | Cross-platform |
Type | message board |
BBCode or Bulletin Board Code is a lightweight markup language used to format posts in many message boards. The available tags are usually indicated by square brackets ([ ]) surrounding a keyword, and they are parsed by the message board system before being translated into a markup language that web browsers understand—usually HTML or XHTML.
BBCode was first introduced in 1998 by the messageboard software Ultimate Bulletin Board (UBB).
Tags[edit]
BBCode | Example HTML | Rendering | |
[b]bolded text[/b] |
<b>bolded text</b> , <strong>bolded text</strong> or <span style="font-weight: bold;">bolded text</span> |
bolded text | |
[i]italicized text[/i] |
<i>italicized text</i> , <em>italicized text</em> or <span style="font-style: italic;">italicized text</span> |
italicized text | |
[u]underlined text[/u] |
<u>underlined text</u> , <ins>underlined text</ins> or <span style="text-decoration: underline;">underlined text</span> |
underlined text | |
[s]strikethrough text[/s] |
<s>strikethrough text</s> , <del>strikethrough text</del> or <span style="text-decoration: line-through;">strikethrough text</span> |
||
[url]http://example.org[/url] |
<a href="http://example.org">http://example.org</a> |
http://example.org | |
[url=http://example.com]Example[/url] |
<a href="http://example.com">Example</a> |
Example | |
[img]http://upload.wikimedia.org/wikipedia/commons/thumb/7/7c/Go-home.svg/100px-Go-home.svg.png[/img] |
<img src="http://upload.wikimedia.org/wikipedia/commons/thumb/7/7c/Go-home.svg/100px-Go-home.svg.png" alt="" /> |
![]() |
|
[quote="author"]quoted text[/quote] (including optional author ) |
<blockquote><p>quoted text</p></blockquote> (usually implemented in more advanced ways) |
To quote:
|
|
[code]monospaced text[/code] |
<pre>monospaced text</pre> |
monospaced text |
|
[style size="15px"]Large Text[/style] (The unit of measurement varies with each BBCode variant and could represent pixels, points, or relative HTML sizes.) |
<span style="font-size:15px">Large Text</span> or <font size="(+,-)x">Different text-size</font> (you can set + or - and x is a number representing pixels |
Large Text | |
[style color="red"]Red Text[/style] or
|
<font color="#FF0000">Red Text</font>, <font color="red">Red Text</font>, <span style="color:#FF0000;">Red Text</span>, <span style="color:red;">Red Text</span> |
Red Text | |
:)
(And other emoticons, depending on the variant. Most BBCodes do not enclose emoticons in square brackets, leading to frequent accidental usage) |
<img src="Face-smile.svg" alt=":-)"> |
![]() (Specific image and size vary) |
|
[list] [*]Entry 1 [*]Entry 2 [/list]
Some message boards do not need the square brackets around the markers, e.g.:
(many variants for li and /li, list types (unordered and ordered, with different bullets or counter formats), etc.) |
<ul><li>Entry 1</li><li>Entry 2</li></ul> |
|
|
[table] [tr] [td]table data[/td] [/tr] [/table]
|
<table><tr><td>table data</td></tr></table> |
|
Implementation[edit]
BBCode is typically implemented by applying a series of regular expression string-replace operations upon the input. Because regular expressions are limited in analyzing the structure of text input, this has the artefact that any non-hierarchical BBCode input will be transformed into invalid non-hierarchical HTML without error.
Applying traditional parsing techniques is made difficult by ambiguities in the markup, such as in [quote=[b]text[/b][/quote]
, where the input can either be interpreted as "text" quoted from someone called "[b", or the bolded text "text" surrounded by "[quote=" and "[/quote]".
References[edit]
- ^ BOINC Project Forums et al.