I've been using daterangepicker [1] for ages, and it's one of the reasons I still just default to jQuery for web apps (the other being jQuery's custom event chain). Works well, very readable, easy to pass functions to disable individual dates which is important in reservations apps, ties in nicely with moment.js. More to the point, finding a decent calendar that didn't baffle users was such a pain for so long that I never want to have to do it again. And of course, with native browser components who knows what your user's going to see next year?
[1] https://daterangepicker.com