How to create global obj in nodejs?-CodePudding

How can i create global object that i will update with key and value while i use my app?

I need to create global object that i will add more data while the client use the appliaction.

Now i use this :

var json = {}

exports.module = {json}

And this is how i call it :

let json = require("../stroe/store")

But my json value restart to nothing each time that user call the server...

How can i create global object in nodejs?

CodePudding user response：

global.js

const data = {name: "John", surname:"Doe"}

module.export = { data }

The page where you want to use global.js

const usingJSON = require("./global.js")

console.log("result --->", usingJSON)
// It will work when you do the update here

Would you give this a try ?

CodePudding user response：

Your object will not be reset unless the server is restarted.

If you want to store completely permanent data, you need to use a database for this.

In the example below you will see a simple express server example. In every request, I create a new value and add it to the object.

const express = require('express')
const app = express();

const json = {};

app.get("/test", (req, res) => {
    json[Math.random()] = Math.random();
    console.log(json)
    res.status(200).json(json);
});

app.listen(3001);

Result:

{
  '0.7194184298804673': 0.8660271960055534,
  '0.5781764917107222': 0.7342461283679118,
  '0.7488988117603479': 0.8913689704797536
}