Creating custom jQuery function without selector prerequisite

Question

I know that I can create custom jQuery plugins by using the $.fn.myFunction constructor, and the calling the custom function in JavaScript as $(\'selector

Answer 1

This should work:

jQuery.MessageBox = function() {
  var show = function() {
    // something...
  }
  var hide = function() {
    // something...
  }
  return {
    show: show,
    hide: hide
  }
}