看不懂这段代码，哪位高手能给解释下

        var animal = {
            name:"",
            setNameFunc: function(n){
                this.name =  n;
            },
            getNameFunc:function(){
                return this.name;
            }
        };
        //alert(typeof animal)
       animal.setNameFunc("Dog");
       
       document.write("<br> animal.getNameFunc() :"+animal.getNameFunc());