gistfile1.txt

(function($) {
  var methods = {
    init: function(options) {
      return this.each(function() {

        var defaults = {
          param1:false,
          param2:100,
          onChange:function(){

          },
          onBlur:function(){

          }
        };

        var that = {};
        this.item = that;
        var $that = $(this);
        that.options = jQuery.extend(defaults,options);

        that.do1 = function(){

        };

        that.do2 = function(opts){

        };

        return this;
      });
    },


    do1: function(opts){
      this.each(function() {
        if(this.item) this.item.do1();
      });
      return this;
    },

    do2: function(){
      this.each(function() {
        if(this.item) this.item.do2();
      });
      return this;
    }
  };

  $.fn.myPluginName = function(method) {
    if (methods[method]) {
      methods[method].apply(this, Array.prototype.slice.call(arguments, 1));
    } else if (typeof method === 'object' || !method) {
      return methods.init.apply(this, arguments);
    } else {
      $.error('Method ' + method + ' does not exist on $.myPluginName');
    }
    return this;
  };
})(window.jQuery);