假如js支持默认方法

var obj = {
    __noSuchMethod__ : function(name,args){
   
        //obj的方法循环调用
        var funName = name.replace(/\d/g,'');
        if(typeof this[funName] === 'function'){
            for(var i=0,len=parseInt(name.match(/\d+/)[0]) || 0;i<len;i++){
                this[funName].apply(this,args);
            }
        }
            
        
        //obj的只读属性getter
        var r_fields = {
            only_r : 'cciscc'
        };
        var fieldName = name.replace(/^get_/,'');
        if(name.substring(0,4) === 'get_' && fieldName in r_fields){
            return r_fields[fieldName];
        }
    }
    ,greet: function(msg){
        console.log(msg);
    }
    ,cc:function(msg){
        console.log('cc:'+msg)
    }
};
for(var i in obj){
    obj[i] = (function(fn){
        return function(){
            return fn.apply(this,arguments) || this;
        };
    })(obj[i]);
}

alert(obj.cc5('hi').greet('hi').greet2('hello').get_only_r());