如何在 node.js 中需要一个文件并在请求方法中传递一个参数，而不是传递给模块？
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How to require a file in node.js and pass an argument in the request method, but not to the module?
提问by Totty.js
I have a module.js that must be loaded; In order to work needs objectX;
我有一个必须加载的 module.js；为了工作需要objectX；
How do I pass the objectX to the module.js in the require method provided by node.js?
node.js提供的require方法中如何将objectX传递给module.js？
thanks
谢谢
// my module.js
objectX.add('abc');
// error: objectX is undefined
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***)
我想要一种方法来做到这一点，而不必更改我的所有课程，因为会花费很多时间......而且他们的方式对客户端具有良好的性能。（我将客户端文件与服务器文件混合使用***）
回答by kgilpin
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:
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 require-ing 模块中的变量中。换句话说：
main.js
主文件
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:
算术.js：
module.exports = function(initValue) {
return {
addOne: function() {
return initValue + 1;
},
subtractOne: function() {
return initValue - 1;
},
}
}
回答by ChrisCantrell
You can avoid changing the actual exported object by chaining in an "init" method (name it whatever you want).
您可以通过链接“init”方法（随意命名）来避免更改实际导出的对象。
Module TestModule.js:
模块 TestModule.js：
var x = 0; // Some private module data
exports.init = function(nx) {
x = nx; // Initialize the data
return exports;
};
exports.sayHi = function() {
console.log("HELLO THERE "+x);
};
And then requiring it like this:
然后像这样要求它：
var TM = require('./TestModule.js').init(20);
TM.sayHi();
回答by ladar
What about workaround like export some init method and pass objectX as parameter right after requiring?
像导出一些 init 方法并在需要后立即将 objectX 作为参数传递之类的解决方法怎么样？
var module = require('moduleJS');
module.init(objectX)
