Uh, I'm sure modern jQuery will detect and use the capabilities the author attributes to "HTML5 [...] and ECMAScript 5", continuing to insulate developers from

Uh, I'm sure modern jQuery will detect and use the capabilities the author attributes to "HTML5 [...] and ECMAScript 5", continuing to insulate developers from having to learn the (annoying) vagaries of differently implemented versions of the specifications in the various browsers that need to be supported.