面向对象的Javascript - 如何定义类中的类？来自C＃的例子 [英] Object Oriented Javascript - How To Define A Class Within A Class? from a C# example

问题描述

我知道在SO上有很多OO javascript问题，而且我已经阅读了很多资源....但到目前为止它仍然是我最长的学习曲线！

I know there are a lot of OO javascript questions on SO and I a have been reading a lot of resources.... BUT it is still far my most long winded learning curve so far!

我不是经典的训练对不起，因此我必须向你们展示c＃我想要实现的一个例子。

I am not classically trained sorry, hence I will have to just show you guys in c# an example of what I want to acheive.

我希望你能帮忙！

public class Engine
{
    public int EngineSize;

    public Engine()
    {
    }
}
public class Car
{
    public Engine engine;

    public Car()
    {
        engine = new Engine();
    }
}

伙计我真的不担心私人/公众&安培;以上C＃示例的命名约定。

guys I am not really worried about the private/public & naming conventions of the above C# example.

我想知道的是如何在Javascript中复制这个结构？

All I want to know is how to replicate this structure in Javascript?

谢谢！

推荐答案

function Engine(size) {
    var privateVar;

    function privateMethod () {
      //...
    }

    this.publicMethod = function () {
       // with access to private variables and methods
    };

    this.engineSize = size; // public 'field'
}

function Car() { // generic car
    this.engine = new Engine();
}

function BMW1800 () {
  this.engine =  new Engine(1800);
}

BMW1800.prototype = new Car(); // inherit from Car


var myCar = new BMW1800();

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