关于node.js：如何在节点js中的库中收集用户定义的函数？


How to collect user defined functions in a liberary in nodjs?

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我有几个functions，但是我不知道如何在自由的环境中收集用户定义的函数，以便在nodejs项目的所有地方重用它们？

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你可以这样做：在首选文件夹中，创建类似user.js的文件然后，定义一个类，e6方式：

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class Users {
//if you need a constructor, but it's not mandatory
constructor(username,email,otherParamYouNeed){
this.username = username;
this.email = email;
this.otherParamYouNeed = otherYouNeed
}

//then organize your user functions there

userFunctionThatDoesSomething(){
//do what you need
}
userFunctionThatDoesAnotherThing(){
 // do what you need
}
}

//then export the class
module.exports = {Users}

之后，在需要调用这些函数的文件中：

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var {Users} = require ('/path/to/user.js');
//if you have constructor in your class
var user = new Users(username,email,otherParamYouNeed);
//if not
var user = new Users;

之后，您将能够使用您在所需类的文件中在类中声明的函数，例如：

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user.userFunctionThatDoesSomething(etc..);

查看https://www.sitepoint.com/object-oriented-javascript-deep-dive-es6-classes/