如何在node.js中要求一个文件并在request方法中传递一个参数，而不是传递给模块? [英] How to require a file in node.js and pass an argument in the request method, but not to the module?

问题描述

我有一个必须加载的module.js；为了工作需要objectX;

I have a module.js that must be loaded; In order to work needs objectX;

如何通过node.js提供的require方法将objectX传递给module.js?

How do I pass the objectX to the module.js in the require method provided by node.js?

谢谢

// my module.js
objectX.add('abc');
// error: objectX is undefined

我想要一种方法，而不必更改我的所有类，因为这会花费很多时间……而且他们认为这对于客户端而言具有良好的性能. (我将客户端文件与服务器文件混合在一起***)

I would like a way to do it, without having to change all my classes because would take a lot of time... and they way it is has good performance for the client side. (I mix clientfiles with serverfiles***)

推荐答案

您编写的模块可以导出单个函数.当您需要该模块时，请使用您的初始化参数调用该函数.该函数可以返回一个对象(哈希)，您将其放入需求模块中的变量中.换句话说:

The module that you write can export a single function. When you require the module, call the function with your initialization argument. That function can return an Object (hash) which you place into your variable in the require-ing module. In other words:

main.js

var initValue = 0;
var a = require('./arithmetic')(initValue);
// It has functions
console.log(a);
// Call them
console.log(a.addOne());
console.log(a.subtractOne());

arithmetic.js:

arithmetic.js:

module.exports = function(initValue) {
  return {
    addOne: function() {
      return initValue + 1;
    },
    subtractOne: function() {
      return initValue - 1;
    },
  }
}

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