object对象的增删改查

var obj = {
                    name : "XiaoQi",
                    sex : ‘female‘,
                    age : 18,
                    stature : 160,
                    weight : 90,
                    apple : function () {
                        console.log(‘I am eating apple!!!‘);
                        this.weight -- ;
                    },
                    hamburger : function () {
                        console.log(‘I am eating hamburger!!It is delicious!!!‘);
                        this.weight ++ ;
                    }
                }

obj.site = "ZheJiang";

delete this.weight;

obj.name = “QiQi";

obj.sex;

console.log(obj.sex);