如何创建具有已定义变量和函数的 JavaScript 对象？

发布于 2024-09-26 22:07:43 字数 833 浏览 3 评论 0原文

假设我想创建一个名为“Vertex”的对象。通常，在 Java 中我会通过以下方式执行此操作：

public class Vertex {

   // member variables
   public data;
   private id;

   // member methods
   public Vertex() { /* default constructor */ }
   public getID() { return id; }
}

现在，我将如何在 JavaScript 中执行此操作？我想保留私人与公共？这是我到目前为止所设置的，但我认为这是不对的，而且我从未处理过 JavaScript 中的 OOP。

/**
 * Vertex constructor.
 */
function Vertex(object) {

    data = object;
    id = object.getCode(); // each Vertex will have a unique id which will be the city code
};
Vertex.prototype = (function() {
  // Private Members here

  // Public Members inside return
  return {
    constructor : Vertex,

    getID : function() {

        return (id);
    }
};

我对原型一点也不熟悉，但我正在努力学习。这是正确的方法吗？如果不是，我基本上是在尝试完成上述 Java 代码的功能，但是是在 JavaScript 中完成的。

原文

Let's say I want to create an Object called 'Vertex'. Usually, in Java I would do this by:

public class Vertex {

   // member variables
   public data;
   private id;

   // member methods
   public Vertex() { /* default constructor */ }
   public getID() { return id; }
}

Now, how would I do that in JavaScript? I want to preserve private vs. public? This is what I have set up so far, but I don't think it is right, and I've never dealt with OOP in JavaScript.

/**
 * Vertex constructor.
 */
function Vertex(object) {

    data = object;
    id = object.getCode(); // each Vertex will have a unique id which will be the city code
};
Vertex.prototype = (function() {
  // Private Members here

  // Public Members inside return
  return {
    constructor : Vertex,

    getID : function() {

        return (id);
    }
};

I'm not familiar at all with prototypes, but I'm trying to learn. Is this the right way to do this? If it isn't, I'm basically trying to accomplish what the above Java code does, but by doing it in JavaScript.

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三生殊途 2024-10-03 22:07:43

http://robertnyman.com/2008/10/14/javascript-how-to-get-private-privileged-public-and-static-members-properties-and-methods/ 解释得很痛苦细节。就你而言...

// Constructor
function Vertex (data) {
    // Private
    var id = 1;

    // Privileged
    this.getID= function () {
        return id;
    };

    // Public
    this.data = data;
}

// Public
Vertex.prototype.getData = function () {
    return this.data;
};

// Static property
Vertex.static = "something";

http://robertnyman.com/2008/10/14/javascript-how-to-get-private-privileged-public-and-static-members-properties-and-methods/ explains it in excruciating detail. In your case...

// Constructor
function Vertex (data) {
    // Private
    var id = 1;

    // Privileged
    this.getID= function () {
        return id;
    };

    // Public
    this.data = data;
}

// Public
Vertex.prototype.getData = function () {
    return this.data;
};

// Static property
Vertex.static = "something";

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