Question

Javascript的新手在尝试更好地使用这种语言进行编码。所以我试图创建一个应该是牙科诊所的对象。在那个诊所的对象里，我想要在那里工作的所有牙医的阵列。牙医也是对象（因此对象内部的对象）。当我尝试添加/访问对象时，它们是未定义的，它告诉我它们具有的方法不存在。我不确定错误可能是什么，从我使用Java的时候开始就习惯用这种方式进行编码。谁能签出代码并为我指出正确的方向？寻求帮助。

        function createDentistObject(firstName, lastName, age)
    {
        let dentistObject =
        {
            firstName: firstName, lastName: lastName, age:age,
            getFullName: function()
            {
                return this.firstName + " " + this.lastName;
            }
        };
    }

    function createDentistList()
    {
        let dentistList = [(createDentistObject("Test","Test",0))];
        return dentistList;
    }


    let myDentalClinic =
    {
        dentists:createDentistList(),

        addDentist:function(dentistObject)
        {
            console.log("Dentistfullname: " + this.dentistObject.getFullName());
            if(this.dentists.length == 0)
            {
                this.dentists.push(this.dentistObject);
            }
            else
            {
                /*if(this.dentistExist(dentistObject))
                {
                    console.log("Dentist exists in the list!");
                }*/
                    this.dentists.push(dentistObject);

            }
        },

        dentistExist:function(dentistObject)
        {
            for(let i = 0; i < this.dentists.length; i++)
            {
                if(this.dentists[i].firstName === dentistObject.firstName)
                {
                    return true;
                }
            }
            return false;
        },

        printAllDentists:function()
        {
            let output = "";
            for(let i = 0; i < this.dentists.length; i++)
            {
                output += this.dentists[i].firstName + "\n";
            }
            console.log(output);
            console.log(this.dentists);
        }
    };


    let dentistTest = createDentistObject("Dentist", "Dentiston", 38);
    myDentalClinic.addDentist(dentistTest);

Answer 1

您忘记了在第一个函数中返回创建的牙医对象：

function createDentistObject(firstName, lastName, age)
{
    let dentistObject =
    {
        firstName: firstName, lastName: lastName, age:age,
        getFullName: function()
        {
            return this.firstName + " " + this.lastName;
        }
    };

    return dentistObject;
}

在myDentalClinic对象中，您还使用this.dentistObject而不是您的参数ististObject键入了一些错字。固定：

let myDentalClinic =
{
    dentists:createDentistList(),

    addDentist:function(dentistObject)
    {
        console.log("Dentistfullname: " + dentistObject.getFullName());
        if(this.dentists.length == 0)
        {
            this.dentists.push(dentistObject);
        }
        else
        {
            /*if(this.dentistExist(dentistObject))
            {
                console.log("Dentist exists in the list!");
            }*/
                this.dentists.push(dentistObject);

        }
    },

    dentistExist:function(dentistObject)
    {
        for(let i = 0; i < this.dentists.length; i++)
        {
            if(this.dentists[i].firstName === dentistObject.firstName)
            {
                return true;
            }
        }
        return false;
    },

    printAllDentists:function()
    {
        let output = "";
        for(let i = 0; i < this.dentists.length; i++)
        {
            output += this.dentists[i].firstName + "\n";
        }
        console.log(output);
        console.log(this.dentists);
    }
};

另一个对象内的对象数组（Javascript）

1 个答案: