[1] [CITE@en[trusktr/element-behaviors: An entity-component system for HTML elements.]]
([TIME[2018-05-01 15:07:17 +09:00]])
<https://github.com/trusktr/element-behaviors>

[2] [CITE@en[Element Behaviors, and the has="" attribute. A useful alternative to Custom Elements in many cases! · Issue #727 · w3c/webcomponents]]
([TIME[2018-05-01 15:07:22 +09:00]])
<https://github.com/w3c/webcomponents/issues/727>