Following is a simple jquery based plugin template

(function($) {
 
        $.extend({  // adding our plugin to jquery 
            myPlugin: function(elem, command, args) {
                // now iterate through the elements collection and do your operations, then return this, for chaining purpose.
                return elem.each(function(index){
                    // do your operations here.					
                });
            }
        });
        $.fn.extend({   // so that we can use $("body").myPlugin('operation1');
            myPlugin: function(command) {
                return $.myPlugin($(this), command, Array.prototype.slice.call(arguments, 1));
            }
        });
        $.myPlugin.props = {   // basic properties of our plugin
            key1: "value1",
            key2: "value2"
        };
        $.myPlugin.methods = { // functions related to plugin
            fun1: function(param) {
                /*  do work */
            },
            fun2: function() {
                /*  do work */
            }
        };
     
       
})(jQuery);