Jquery定义对象(闭包)与扩展对象成员的方法

(function ($) {
    MyObject = function () { };//定义对象
    $.extend(MyObject,
             { b: 5 },
             { myclick: function () { alert("c") } }
            );
})(jQuery);

//调用：
alert(MyObject.b);
MyObject.myclick();

(function ($) {
    MyObject= function (name) {//定义类
        this.a = "abc";
        this.init(name);//相当于一构造函数，调用init方法
    };
    $.extend(MyObject.prototype, 
                {a:””,//属性
                 init:function(name){this.a=name},
                 myclick: function () { alert(this.a); }}
                );
})(jQuery);

//调用：实例化
var obj = new MyObject(“test1”)
obj.myclick();

for(var temp in obj){
  result+=temp+”:”+obj[temp];
}

MyClass=function(opt){
    this.a=5;
    this.b=6;
    $.extend(this,opt);
}

var Myobject=new Myclass({a:7;c:b});

_MyObject=null;
Myobject=function(opt){
    if(_MyObject==null){
        _MyObject=new MyClass(opt);
    }
    return _MyObject;
}

//调用：
var instance=Myobject({a:7;c:b});

$.fn.focusEnd = function(){
            this.setCursorPosition(this.val().length);
 }

$('.num').click(function(){
  $('.num').focusEnd();
});

$.fn.extend({
    fnClassToggle:function(options){
    var defaults={hoverClass:"default",...};
    var settings=$.extend({},defaults,options||{});
    $(this).each(function(i,n){
        var c1=settings.hoverClass;
        if(c1){
            $(n).hover(function(){$(this).addClass(c1);},
                       function(){$(this).addClass(c1);});
        }
    });
    }
});

$(".box").fnClassToggle({hoverClass:"hover"});