Another idea for setting jQuery plugin default options.

jquery-plugin-options-idea.js

// ============================
// $.myMethod-based plugin
// ============================

(function($){
  
  var ns = $.myMethod = function( options ) {
    options = $.extend( {}, ns.options, options );
    
    // Awesome code goes here
    console.log( options );
    
  };
  
  ns.options = {
    myProp1: 'foo',
    myProp2: 'bar'
  };
  
})(jQuery);

// Changing defaults in user code:
$.myMethod.options.myProp1 = 'something different';

// Or:
$.myMethod.options = {
  myProp1: 'omg',
  myProp2: 'ponies'
};


// ============================
// $.myMethod-based plugin
// ============================

(function($){
  
  var ns = $.fn.myMethod = function( options ) {
    options = $.extend( {}, ns.options, options );
    
    return this.each(function(){
      // Awesome code goes here.
      console.log( options );
    })
  };
  
  ns.options = {
    myProp1: 'foo',
    myProp2: 'bar'
  };
  
})(jQuery);

// Changing defaults in user code:
$.fn.myMethod.options.myProp1 = 'something different';

// Or:
$.fn.myMethod.options = {
  myProp1: 'omg',
  myProp2: 'ponies'
};