Global Variable in Node Express and Access Inside a Class File

Question

In my Node Express app I have created a variable in app.js as shown below:

let accounts = [checkingAccount, savingAccount]

Now, I have a separate file called account.js (Not a route) just a class file. And I want to access the accounts array. How can I do that?

You can refer https://stackoverflow.com/questions/9765215/global-variable-in-app-js-accessible-in-routes — Aayush Mall, Aug 05 '20 at 18:07
@AayushMall My question is quite different. My account.js is a model file not a route. — john doe, Aug 05 '20 at 18:30
You can assign it globals variable of the Node Js and use it further — Aayush Mall, Aug 05 '20 at 19:00
https://nodejs.org/en/knowledge/getting-started/globals-in-node-js/ — Aayush Mall, Aug 05 '20 at 19:00

Sven.hig · Answer 1 · 2020-08-05T18:35:38.147

2

in your app.js use export

module.exports.accounts = ["checkingAccount", "savingAccount"];

and then in your account.js

accounts = require("./app.js");

edited Aug 05 '20 at 18:35

answered Aug 05 '20 at 18:04

Sven.hig

In my account.js I am requiring account.js ?? I dont understand. – john doe Aug 05 '20 at 18:28
Also keep in mind that account.js is not a route. It is a model file. – john doe Aug 05 '20 at 18:31
Sorry, I Have changed that, yes you should be able to import/require the variables in your `account.js` module – Sven.hig Aug 05 '20 at 18:37
That works but now inside app.js file it says accounts is not defined. – john doe Aug 05 '20 at 18:58
are checkingAccount , savingAccount functions ? – Sven.hig Aug 05 '20 at 19:00
They are just objects. Also inside account.js accounts is an object instead of an array. – john doe Aug 05 '20 at 19:11
Why does module.exports.accounts end up being an object which contains accounts array. – john doe Aug 05 '20 at 19:12
because the [module.exports](https://nodejs.org/api/modules.html#modules_exports_shortcut) is an object that allows you to expose your module. if you want to access the array just do smth like `const getarray=require("./app.js") ` and then `getarray.accounts ` – Sven.hig Aug 05 '20 at 19:21

1 Answers1