Unfortunately the realities of supporting a biz app leaves you with little choice. Sure you can do pure JavaScript, and we continually try. However at some poin

Unfortunately the realities of supporting a biz app leaves you with little choice. Sure you can do pure JavaScript, and we continually try. However at some point when that customer running IE9 calls you about another UI issue, you have to admit that you’re just reinventing the wheel. jQuery and such frameworks have a place because they abstract a lot of conditional statements to handle different browser quirks away from you. The framework supports certain browsers and for the most part you can expect that the behavior will be relatively consistent across those browsers. Meanwhile I can’t even get consistent event firing order between IE, Edge, and Chrome for key and mouse events on inputs.