Force numeric input with cmd and ctrl actions

numeric.js

// Force numeric only input
$.fn.numeric = function() {
	return this.each(function() {
		$(this).keydown(function(e) {
			var key = e.charCode || e.keyCode || 0;
			// Allow backspace, tab, delete, arrows, numbers, keypad numbers, home, end, period, cmd + a, cmd + r, ctrl + a, ctrl + r, and numpad decimal ONLY
			return (key == 8 || key == 9 ||	key == 46 || key == 110 || key == 190 || (key >= 35 && key <= 40) || (key >= 48 && key <= 57) || (key >= 96 && key <= 105) || (key == 65 && e.ctrlKey === true) || (key == 82 && e.ctrlKey === true) || (key == 65 && e.metaKey === true) || (key == 82 && e.metaKey === true));
		});
	});
}