Javascript 总结 随笔

JQuery 

(function (window,undefined){
    var jQuery = function(selector, context){
             return new jQuery.fn.init(selector,context);   
    }
   jQuery.fn = jQuery.prototype = {
       init: function (selector, undefined){
　　　　　　//todo sth initialization
         return this:
         }}
    
       jQuery.fn.init.prototype = jQuery.fn;
  
       window.jQuery = window.$ = jQuery;
    
})(window);