&#39;s also possible to set values to Javascript-only properties, such as <code>hash</code> in a <code>&lt;a&gt;</code> element.</p>
<p>Note that if the same attribute is defined in the both <code>selector</code> and <code>attributes</code> parameters, the value in <code>attributes</code> is used.</p>
<p>For developer convenience, Mithril makes an exception for the <code>class</code> attribute: if there are classes defined in both parameters, they are concatenated as a space separated list. It does not, how