Issue with logging objects in an array within a for loop

I am having an issue with a JavaScript for-in loop.

Why does console.log(user) display the number "0" when iterating through users?

Is it indicating the index of the user object in the array?

I would like to log each object individually...

Thank you

router.post("/api/verification/check", auth, async (req, res) => {
    try {
      const users = await User.find({ /* retrieve users */ })

      console.log(`${users}`)           // displays user object
      
      for (const user in users) {
        console.log(user)               // shows "0" ???
   
      }

    } catch (err) {
      res.status(400).send()
    }
  }
)

Answer №1

When using the for-in loop, you will receive the index of the array rather than the value itself. To access the value, you will need to look it up using the index.

for (const i in users) {
   console.log(users[i]);
}

[update] Alternatively, you can opt for the for-of loop.

for (const user of users) {
   console.log(user);
}

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Stop JQuery from executing when an error is caught

Once the document is ready, I have configured: $.ajaxSetup({ "error": function (XMLHttpRequest, textStatus, errorThrown) { if(XMLHttpRequest.status == 403) { display_modal( 'Please login to continue.', &ap ...

Please input only 0s and 1s into the designated field

How can I modify this code to only accept 0 and 1 in the input field, while also adding spaces after every 4 digits? Currently, it accepts all digits. I'm struggling with creating a pattern that restricts it to just 0 and 1. document.getElementById(&a ...

What is the best way to update a specific section of my website by modifying the URL while keeping the menus fixed and the site functioning smoothly?

I am in desperate need of assistance as I search for a solution. Currently, I am working on a project involving music within a web browser or application. My goal is to utilize HTML, PHP, JS, and CSS to create this project. If I start with a website, I p ...

Loading content within the designated element

<div class="col-sm-6" id="ajaxform"></div> <!-- begin snippet: js hide: false --> <!-- language: lang-html --> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script> <ul id="accordio ...

What is this error: "Unknown authentication strategy 'loca'"?

Whenever I try to utilize passport.js, it keeps throwing the following error: Unknown authentication strategy "local"! config/configuration.js var passport = require('passport') , LocalStrategy = require('passport-local').Strategy; ...

Tips for managing a 64-bit signed integer received from a NextJS backend API

I am currently developing a NextJS application in which one of the backend API routes sends back a JSON object that includes a 64-bit signed integer. // userID represents the 64-bit signed integer res.status(200).json({ id: userId, attributes: userAttribut ...

What steps can I take to ensure that my initial Ajax Get request is completed before proceeding with the next one?

Having two methods that return promises is not enough. I am attempting to make the second method execute only after the first one has obtained and manipulated data, but I have struggled to find a solution despite others asking this question before me. Here ...

The property of userNm is undefined and cannot be set

When attempting to retrieve a value from the database and store it in a variable, an error is encountered: core.js:6014 ERROR Error: Uncaught (in promise): TypeError: Cannot set property 'userNm' of undefined TypeError: Cannot set property &apos ...

Highly complex regular expressions in nth-check causing inefficiencies during npm installation of react-router-dom

Feeling new and inexperienced with how to react, I attempted to execute the command "npm i react-router-dom" but it ended up stopping the download process and displaying several errors. In my search for a solution, I stumbled upon this reference to some ...

Ways to retrieve class attributes in a child context

When trying to access the class properties (or methods) from another scope, I find myself having to store it in a local variable within the function scope. class MyClass { constructor(API) { this.API = API; this.property = 'value& ...

Why won't my controller function fire with ng-click in AngularJS?

I'm having trouble getting a function to execute when my button is clicked. Despite the fact that this code appears correct, the function defined in my controller isn't being triggered. The code compiles without errors as shown in the console. A ...

JavaScript and the Firefox Scratchpad platform

Currently, I am utilizing the MDN guide for learning JavaScript and experimenting with examples using scratchpad. Here's a scenario: console.log('The value of b is ' + b); var b; Why does the console log display "The value of b is -1"? I ...

What is the best way to instruct firebase-admin to halt during test execution?

Running process.exit() or --exit in my mocha tests doesn't feel right. I'm currently working on code that utilizes firebase-admin and while attempting to run mocha tests, wtfnode showed me: wtfnode node_modules/.bin/_mocha --compilers coffee:co ...

Tips for routing with React on a Node.js Express server

I am currently using a basic express server in node: const express = require('express') const path = require('path') const app = express() const port = process.env.PORT || 80 const PUBLIC_DIR = 'public' app.use(express.stat ...

When using GTM dataLayer .push, a fresh object is generated rather than simply appending it to the current dataLayer

I am in the process of setting up a dataLayer for my website, but I have encountered an issue. My understanding is that Google Tag Manager dataLayer functions in a way where you have one central dataLayer object containing all the data variables. Each tim ...

Tips for storing the state using Localstorage?

Greetings to the person reading this message! I am relatively new to programming and I have a query... I created a Navigation bar: body > div > nav > div > ul > li*10 I have implemented the styling in CSS. //Navigation Bar const list = ...

Setting up PhalconPHP and Node.js configurations

Is there a way to merge configurations for PHP and JavaScript, considering they both interact with the same database? How can these be organized cleanly? Additionally, what file structure would be best for an application utilizing PhalconPHP and Express. ...

What is the maximum duration we can set for the Ajax timeout?

I am facing a situation where an ajax request can take between 5-10 minutes to process on the server side. Instead of continuously polling from JavaScript to check if the request is completed, I am considering making just one ajax call and setting the tim ...

Passing a single item from a list as a prop in Vue.js

Imagine having the following set of information in data: data: { todos: [ { id: 1, title: "Learn Python" }, { id: 2, title: "Learn JS" }, { id: 3, title: "Create WebApp" } ] } Now, I aim to send only the item with an id of 2 t ...

Is it possible to retrieve the IMEI number of a mobile phone using expo?

Currently working on developing a mobile app with React Native using Expo. I need to figure out a way to access the client's mobile IMEI number and display it in the front end of the app. Unsure of how to accomplish this task. Is there a method to do ...