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diff --git a/docs/extensions/attr_list.md b/docs/extensions/attr_list.md new file mode 100644 index 0000000..7b2e19f --- /dev/null +++ b/docs/extensions/attr_list.md @@ -0,0 +1,98 @@ +title: Attribute Lists Extension + +# Attribute Lists + +## Summary + +The Attribute Lists extension adds a syntax to define attributes on the various +HTML elements in markdown's output. + +This extension is included in the standard Markdown library. + +## Syntax + +The basic syntax was inspired by [Maruku][]'s Attribute Lists feature. + +[Maruku]: http://maruku.rubyforge.org/proposal.html#attribute_lists + +### The List + +An example attribute list might look like this: + +```text +{: #someid .someclass somekey='some value' } +``` + +A word which starts with a hash (`#`) will set the id of an element. + +A word which starts with a dot (`.`) will be added to the list of classes +assigned to an element. + +A key/value pair (`somekey='some value'`) will assign that pair to the element. + +Be aware that while the dot syntax will add to a class, using key/value pairs +will always override the previously defined attribute. Consider the following: + +```text +{: #id1 .class1 id=id2 class="class2 class3" .class4 } +``` + +The above example would result in the following attributes being defined: + +```text +id="id2" class="class2 class3 class4" +``` + +### Block Level + +To define attributes for a block level element, the attribute list should +be defined on the last line of the block by itself. + +```text +This is a paragraph. +{: #an_id .a_class } +``` + +The above results in the following output: + +```html +<p id="an_id" class="a_class">This is a paragraph.</p> +``` + +The one exception is headers, as they are only ever allowed on one line. + +```text +A setext style header {: #setext} +================================= + +### A hash style header ### {: #hash } +``` + +The above results in the following output: + +```html +<h1 id="setext">A setext style header</h1> +<h3 id="hash">A hash style header</h3> +``` + +### Inline + +To define attributes on inline elements, the attribute list should be defined +immediately after the inline element with no white space. + +```text +[link](http://example.com){: class="foo bar" title="Some title!" } +``` + +The above results in the following output: + +```html +<p><a href="http://example.com" class="foo bar" title="Some title!">link</a></p> +``` + +## Usage + +See [Extensions](index.md) for general extension usage, specify +`markdown.extensions.attr_list` as the name of the extension. + +This extension does not accept any special configuration options. |