Jquery 获取对象的另一个方法的值

我正在尝试学习oops的概念，下面我想计算一些东西

(function(){
var rectangle= {
    specs: function(length, width){
        length= length;
        width= width;
        this.calculate();
    },

    calculate: function(){
        //How can i refer here the diameter and height passed in the specs method above
         console.log(length * width)
    }
};
rectangle.specs(10, 20);
})();

---

谢谢

根据调用specs方法后希望变量的可访问性，您可以选择两种方法之一

第一种方法是，如果希望变量只包含在列出的方法中，只需将参数传递给正在调用的第二个方法。编辑被**包围：

(function(){
var rectangle= {
    specs: function(length, width){
        length= length;
        width= width;
        this.calculate(**length, width**);
    },

    calculate: function(**length, width**){
        //How can i refer here the diameter and height passed in the specs method above
         console.log(length * width)
    }
};
rectangle.specs(10, 20);
})();

(function(){
var rectangle= {
    specs: function(length, width){
        **this.length** = length;
        **this.width** = width;
        this.calculate();
    },

    calculate: function(){
        //How can i refer here the diameter and height passed in the specs method above
         console.log(**this.length * this.width**)
    }
};
rectangle.specs(10, 20);
})();

第二种方法将变量分配给对象，因此可以使用rectangle.length或rectangle.width在对象外部访问变量，或者在内部使用“this”关键字访问变量。编辑被**包围：

(function(){
var rectangle= {
    specs: function(length, width){
        length= length;
        width= width;
        this.calculate(**length, width**);
    },

    calculate: function(**length, width**){
        //How can i refer here the diameter and height passed in the specs method above
         console.log(length * width)
    }
};
rectangle.specs(10, 20);
})();

(function(){
var rectangle= {
    specs: function(length, width){
        **this.length** = length;
        **this.width** = width;
        this.calculate();
    },

    calculate: function(){
        //How can i refer here the diameter and height passed in the specs method above
         console.log(**this.length * this.width**)
    }
};
rectangle.specs(10, 20);
})();

---

您可以使用

this

keywordCool。谢谢，艾基