Jquery on multiple events (untested)

jquery_on_many.js

// Javascript
jQuery.fn.on_original = jQuery.fn.on;
jQuery.fn.on = function() {
  var args = Array.prototype.slice.call(arguments, 0);
  var events = args[0];
  var params = args.slice(1);
  events.split(' ').forEach(function(ev) {
    var eventArgs = params.slice(0).unshift(ev);
    jQuery.fn.on_original.apply(this, eventArgs);
  }.bind(this));
}

# Coffeescript
jQuery.fn.on_original = jQuery.fn.on
jQuery.fn.on = (args...) ->
  args[0].split(' ').forEach (ev) =>
    jQuery.fn.on_original.apply this, args.slice(1).unshift(ev)