如何在Node中将功能作为模块添加到现有对象？

Question

I am using the D3 library, which exposes a global object called d3 .

I also have a code file which adds a function to this object, called d3.tip . However, this file is not in the format required for Node modules. I would like to convert it to a Node module.

If I assign the function to module.exports.tip , obviously it won't attach to the d3 object. How do I write the Node module correctly for this to work?

Answer 1

当您需要时可以执行以下操作：

d3.tip = require("file").tip;