keydown wrapper

keyhandler.js

(function($) {
    $.fn.enterKey = function(key, handler) {
        return this.keydown(function(ev) {
            if (ev.which == key)
                return handler.call(this, ev);
        });
    };
})(jQuery);

$('#test').enterKey(13, function(ev) {
    console.log(ev)
    alert('You hit enter after typing: ' + this.value);
});

//<input id=test value="Hit enter in this textbox" />