如何使用定义的变量和函数创建JavaScript对象? [英] How do I create a JavaScript Object with defined variables and functions?

问题描述

假设我要创建一个名为顶点"的对象.通常，在Java中，我可以通过以下方式做到这一点:

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; }
}

现在，我该如何在JavaScript中做到这一点?我想保留私人还是公共?到目前为止，这是我设置的，但我认为这是不对的，而且我从未使用过JavaScript中的OOP.

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);
    }
};

我对原型根本不熟悉，但是我正在尝试学习.这是正确的方法吗?如果不是这样，我基本上是在尝试通过JavaScript来完成上述Java代码的工作.

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.

推荐答案

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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