node.js - 如何在nodejs的库中收集用户定义的函数？

Question

我有几个functions但我不知道如何在 Libary 中收集用户定义的函数以便在 NodeJs 项目中重用它们？

Answer 1

你可以这样做: 在您的首选文件夹中，创建一个文件，例如 user.js 然后，定义一个类，E6方式:

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:

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，您将能够在需要该类的文件中使用您在该类中声明的函数，例如:

user.userFunctionThatDoesSomething(etc..);

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