从函数外部访问局部变量 [英] Access local variable from outside the function

问题描述

我正在使用 TopUp 制作一个简单的幻灯片.不幸的是，他们没有公开图像索引.

I'm using TopUp to make a simple slideshow. Unfortunately they don't expose the image index.

有没有办法不用修改原脚本就可以访问局部变量index"?

Is there a way I can access the local variable "index" without having to modify the original script?

TopUp = (function() {
 var index = null;
    ...
}

推荐答案

不修改原脚本是不行的.

Without modifying the original script, you can't.

但是如果你只是想能够读取index的值，修改可以很简单，通过在返回的对象中添加一个小函数:

But if you just want to be able to read the value of index, the modification could be really simple, by adding a little function in the objet returned :

getIndex : function() {
  return index;
},

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