Suggestion: double number scroller

Thanks for the suggestion @Gordon !

I have a question with the code format.

If I prototype my custom picker like this :

function showTimePicker(options){
  console.log(options);
}

Later do I need to call it like this in my menu:

E.showMenu({
  'Time': showTimePicker({
    foo : "bar", 
    spam : "eggs"
  })
});

or like this:

E.showMenu({
  'Time': function () {showTimePicker({
    foo : "bar", 
    spam : "eggs"
  });}
});

?