This is not a serious element query plugin, just an experiment to demonstrate what the concept of element queries is about, prove how support can be written in JavaScript, and to highlight the features and limitations of such an approach.
data-width=500
data-width=400,600
data-height=50
data-characters=5,10
data-words=2,5
data-children=4
For a more fully-featured, easier-to-use, and more powerful element query syntax check out http://elementqueries.com