so is something like this possible?
Y.one("input.units").on("keyup change", function(e){
...
});
the jquery equivalent is
$("input.units").bind("keyup change", function(e){
...
});
Yes, this is possible. Just pass an array of event names instead of a string:
Y.one('input.units').on(['keyup', 'change'], function (e) {
// ...
});