This feature has been deprecated. Use Element#matches() instead.
Element#matches()
Load unpoly-migrate.js to polyfill deprecated features.
unpoly-migrate.js
Returns whether the given element matches the given CSS selector.
To match against a non-standard selector like :main, use up.fragment.matches() instead.
:main
up.fragment.matches()
The element to check.
The CSS selector to match.
Whether element matches selector.
element
selector
