insert_datacommand and deserialize the
text/htmldata as you wish.
beforeInputevent, Android input uses compositions and mutations which is different from other browsers. This means that Android support progresses separately from other browsers and due to it being new, may have more bugs.
el.closest, etc. Otherwise we'd have to bundle and maintain lots of polyfills that others may not even need in the first place. For clarity, Slate makes no guarantees that it will work with older browsers, even with polyfills and at present, there are still unresolved issues with IE11.