function haha(){                this.one=function(){                     console.log(this)                 }                this.two=function(){                                     this.one();                    console.log(this)                 }                              }var hehe = new haha() hehe.two()通過對象的屬性調用,this不是應該指向這個對象的嗎(hehe對象)?為什么這里會輸出兩個haha對象呢.