§ The query reference Expression

A query reference lets you embed an arbitrary CSS selector directly in your hyperscript. It evaluates to all matching elements.

§ Examples

<div _="on click add .clicked to <button/>">Add .clicked to all buttons</div>

<div _="on click add .clicked to <button:not(.clicked)/>">
  Add .clicked to all buttons that don't have .clicked on it already...
</div>

§ Syntax

<<css-selector>/>