Charles Cooper

Charles Cooper


MEAN vs. MERN – What’s the Difference?

Gone are the days when CSS, HTML, and basic JavaScript were used to develop web solutions. These are no longer suitable as they fail to deliver applications with swift enhancements. End users demand a richer experience with smooth performance and a multitude of functionalities. The only way to successfully meet these ever-increasing demands is through a web stack.

What Is A Stack?

A stack is a fundamental data structure. It is linear and pursues a specific sequence in performing the operations. In a stack, deletion and insertion of items can occur only at one end, and that is top of the stack. Think of it as a pile of bricks where you can only take the topmost brick off in order to remove things from it. Similarly, the addition of brick also occurs on the top. Programming uses this stack structure throughout. The term stack gained popularity through the LAMP stack.

  • L – Linux (the Operating System)
  • A – Apache (providing server)
  • M – MySQL (relational database)
  • P – PHP (programming language)

MERN** AND MEAN – Its Elements**

Today’s web solutions are complex and need to be constantly altered and upgraded to meet user demands. Hence, the stack has also evolved to accommodate the same. MERN and MEAN are the two popular stacks used by web developers all over the world. These stand for –

**MERN: **MongoDB, ExpressJS, ReactJS, NodeJS

**MEAN: **MongoDB, ExpressJS, AngularJS, NodeJS

  • MongoDB is a Not-only-SQL (NoSQL) class platform. It is a database program which is document-oriented and used by back-end apps to store data in the form of JavaScript Object Notation (JSON) documents.
  • ExpressJS / Express is an open source software which is free. It is the de facto back-end web application framework for NodeJS.
  • ReactJS / React, developed by Facebook, is a JavaScript front-end library for constructing user interfaces.
  • AngularJS / Angular, developed by Google, is a front-end web application framework. It runs the JavaScript code in the user’s browser, letting the applications User Interface to be dynamic.
  • NodeJS is a JavaScript runtime background that permits the developer to implement the application in JavaScript at the back-end.

Benefits Of MERN

Created to develop the best in class web apps, the MERN stack is a combination of technologies. It is a JavaScript stack consisting of various open-source components which provide end-to-end framework support to application developers.

The main benefits of MEARN are:

  • The very edifice of React is a piece that preserves its form and renders itself. It’s used to build parts which the developers put together to make yet another part that shows the complete picture. By splitting the big picture into smaller components, the application developers can focus on one thing at a time. It also makes writing and reasoning about the whole application simpler. These components or parts communicate with each other by sharing data in the form of read-only properties.
  • Covers the complete web development cycle both front end (client side), and back end (server side) using JavaScript.
  • Supports the Model View Controller (MVC) architecture to allow a smooth development process flow.
  • Since the JavaScript stack is used, the developers need to have proficiency in JavaScript and JSON only.
  • Uses four of the most viable technologies, i.e., MongoDB, ExpressJS, React, and NodeJS.
  • Has a wide range of pre-built testing tools.
  • Is an open source framework, and supported by a dedicated community.
  • React allows the same code to run on the browser and server both. This is possible only because of its isomorphic nature. It means when the occasion arises, you can create pages on the server.
  • React is a library and not a framework. A framework has set parameters and allows the developer to create an app as guided by them. However, a library gives complete freedom to the developer to design the app as they deem fit picking and choosing from the multitude of library’s functions.

Benefits Of MEAN

MEAN is one of the fastest growing combinations of technologies. Equipped with responsive tools and plugins, MEAN reduces the time spent on managing the systems. Some of the most complex websites and application built today use it for faster deployment.

The main benefits of MEAN are:

  • Transferring code written in one framework to another is usually very difficult. MEAN makes it easy.
  • MEAN is so flexible that it allows easy testing of applications on the cloud platform. Applications can not only be designed and tested but also introduced on the cloud. By adding a field to the form, the developer can also add more information.
  • Covers the complete web development cycle both front end (client side), and back end (server side) using JavaScript.
  • Supports the Model View Controller (MVC) architecture to allow a smooth development process flow.
  • Web application development is more fluid and organized by doing away with all the needless grunt work.
  • Uses four of the finest technologies, which includes MongoDB, Express.JS, Angular.JS, and Node.JS.
  • Has a wide range of pre-built testing tools.
  • Is an open source in framework, and is supported by a dedicated community.
  • MEAN is cost-efficient because it just requires proficiency in JavaScript.
  • MEAN allows easy switching between client and server. It also permits the launching of an application directly on the server minus any deployment to a stand-alone server.

MERN Vs. MEAN – The Difference

The main difference between MERN and MEAN boils down to the choice between React or Angular. React framework is lightweight and specifically designed for seamless development of web user interfaces which are either single or multi-page and hybrid. As against this, Angular is mostly used in Single Page Applications (SPA) to deliver unbroken and smooth user experience as it sanctions rendering the complete page without the need to refresh it.

Final Thoughts

MEAN has been in the market far longer than MERN but MERN is slowly picking up in popularity. Both MERN and MEAN are sound and viable options. However, the final choice should depend upon the demands of the project and the application developer’s familiarity with the technologies involved. Since both are open source and use almost the same technology combination, it is a matter of deciding between React and Angular.

Thanks for reading

If you liked this post, share it with all of your programming buddies!

Follow us on Facebook | Twitter

Further reading

What is the MERN stack and how do I use it?

Getting Started with the MERN Stack

MEAN Stack Tutorial MongoDB, ExpressJS, AngularJS and NodeJS

MEAN Stack Tutorial – Angular 7 CRUD App with Bootstrap 4

MEAN Stack Angular 8 CRUD Web Application

#node-js #angular #reactjs #mongodb #express

What is GEEK

Buddha Community

MEAN vs. MERN – What’s the Difference?
Mike  Kozey

Mike Kozey


Test_cov_console: Flutter Console Coverage Test

Flutter Console Coverage Test

This small dart tools is used to generate Flutter Coverage Test report to console

How to install

Add a line like this to your package's pubspec.yaml (and run an implicit flutter pub get):

  test_cov_console: ^0.2.2

How to run

run the following command to make sure all flutter library is up-to-date

flutter pub get
Running "flutter pub get" in coverage...                            0.5s

run the following command to generate on coverage directory

flutter test --coverage
00:02 +1: All tests passed!

run the tool to generate report from

flutter pub run test_cov_console
File                                         |% Branch | % Funcs | % Lines | Uncovered Line #s |
lib/src/                                     |         |         |         |                   |
 print_cov.dart                              |  100.00 |  100.00 |   88.37 |...,149,205,206,207|
 print_cov_constants.dart                    |    0.00 |    0.00 |    0.00 |    no unit testing|
lib/                                         |         |         |         |                   |
 test_cov_console.dart                       |    0.00 |    0.00 |    0.00 |    no unit testing|
 All files with unit testing                 |  100.00 |  100.00 |   88.37 |                   |

Optional parameter

If not given a FILE, "coverage/" will be used.
-f, --file=<FILE>                      The target file to be reported
-e, --exclude=<STRING1,STRING2,...>    A list of contains string for files without unit testing
                                       to be excluded from report
-l, --line                             It will print Lines & Uncovered Lines only
                                       Branch & Functions coverage percentage will not be printed
-i, --ignore                           It will not print any file without unit testing
-m, --multi                            Report from multiple files
-c, --csv                              Output to CSV file
-o, --output=<CSV-FILE>                Full path of output CSV file
                                       If not given, "coverage/test_cov_console.csv" will be used
-t, --total                            Print only the total coverage
                                       Note: it will ignore all other option (if any), except -m
-p, --pass=<MINIMUM>                   Print only the whether total coverage is passed MINIMUM value or not
                                       If the value >= MINIMUM, it will print PASSED, otherwise FAILED
                                       Note: it will ignore all other option (if any), except -m
-h, --help                             Show this help

example run the tool with parameters

flutter pub run test_cov_console --file=coverage/ --exclude=_constants,_mock
File                                         |% Branch | % Funcs | % Lines | Uncovered Line #s |
lib/src/                                     |         |         |         |                   |
 print_cov.dart                              |  100.00 |  100.00 |   88.37 |...,149,205,206,207|
lib/                                         |         |         |         |                   |
 test_cov_console.dart                       |    0.00 |    0.00 |    0.00 |    no unit testing|
 All files with unit testing                 |  100.00 |  100.00 |   88.37 |                   |

report for multiple files (-m, --multi)

It support to run for multiple files with the followings directory structures:
1. No root module
2. With root module
You must run test_cov_console on <root> dir, and the report would be grouped by module, here is
the sample output for directory structure 'with root module':
flutter pub run test_cov_console --file=coverage/ --exclude=_constants,_mock --multi
File                                         |% Branch | % Funcs | % Lines | Uncovered Line #s |
lib/src/                                     |         |         |         |                   |
 print_cov.dart                              |  100.00 |  100.00 |   88.37 |...,149,205,206,207|
lib/                                         |         |         |         |                   |
 test_cov_console.dart                       |    0.00 |    0.00 |    0.00 |    no unit testing|
 All files with unit testing                 |  100.00 |  100.00 |   88.37 |                   |
File - module_a -                            |% Branch | % Funcs | % Lines | Uncovered Line #s |
lib/src/                                     |         |         |         |                   |
 print_cov.dart                              |  100.00 |  100.00 |   88.37 |...,149,205,206,207|
lib/                                         |         |         |         |                   |
 test_cov_console.dart                       |    0.00 |    0.00 |    0.00 |    no unit testing|
 All files with unit testing                 |  100.00 |  100.00 |   88.37 |                   |
File - module_b -                            |% Branch | % Funcs | % Lines | Uncovered Line #s |
lib/src/                                     |         |         |         |                   |
 print_cov.dart                              |  100.00 |  100.00 |   88.37 |...,149,205,206,207|
lib/                                         |         |         |         |                   |
 test_cov_console.dart                       |    0.00 |    0.00 |    0.00 |    no unit testing|
 All files with unit testing                 |  100.00 |  100.00 |   88.37 |                   |

Output to CSV file (-c, --csv, -o, --output)

flutter pub run test_cov_console -c --output=coverage/test_coverage.csv

#### sample CSV output file:
File,% Branch,% Funcs,% Lines,Uncovered Line #s
test_cov_console.dart,0.00,0.00,0.00,no unit testing
print_cov_constants.dart,0.00,0.00,0.00,no unit testing
All files with unit testing,100.00,100.00,86.07,""


Use this package as an executable

Install it

You can install the package from the command line:

dart pub global activate test_cov_console

Use it

The package has the following executables:

$ test_cov_console

Use this package as a library

Depend on it

Run this command:

With Dart:

 $ dart pub add test_cov_console

With Flutter:

 $ flutter pub add test_cov_console

This will add a line like this to your package's pubspec.yaml (and run an implicit dart pub get):

  test_cov_console: ^0.2.2

Alternatively, your editor might support dart pub get or flutter pub get. Check the docs for your editor to learn more.

Import it

Now in your Dart code, you can use:

import 'package:test_cov_console/test_cov_console.dart';


import 'package:flutter/material.dart';

void main() {

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        // This is the theme of your application.
        // Try running your application with "flutter run". You'll see the
        // application has a blue toolbar. Then, without quitting the app, try
        // changing the primarySwatch below to and then invoke
        // "hot reload" (press "r" in the console where you ran "flutter run",
        // or simply save your changes to "hot reload" in a Flutter IDE).
        // Notice that the counter didn't reset back to zero; the application
        // is not restarted.
        // This makes the visual density adapt to the platform that you run
        // the app on. For desktop platforms, the controls will be smaller and
        // closer together (more dense) than on mobile platforms.
        visualDensity: VisualDensity.adaptivePlatformDensity,
      home: MyHomePage(title: 'Flutter Demo Home Page'),

class MyHomePage extends StatefulWidget {
  MyHomePage({Key? key, required this.title}) : super(key: key);

  // This widget is the home page of your application. It is stateful, meaning
  // that it has a State object (defined below) that contains fields that affect
  // how it looks.

  // This class is the configuration for the state. It holds the values (in this
  // case the title) provided by the parent (in this case the App widget) and
  // used by the build method of the State. Fields in a Widget subclass are
  // always marked "final".

  final String title;

  _MyHomePageState createState() => _MyHomePageState();

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  void _incrementCounter() {
    setState(() {
      // This call to setState tells the Flutter framework that something has
      // changed in this State, which causes it to rerun the build method below
      // so that the display can reflect the updated values. If we changed
      // _counter without calling setState(), then the build method would not be
      // called again, and so nothing would appear to happen.

  Widget build(BuildContext context) {
    // This method is rerun every time setState is called, for instance as done
    // by the _incrementCounter method above.
    // The Flutter framework has been optimized to make rerunning build methods
    // fast, so that you can just rebuild anything that needs updating rather
    // than having to individually change instances of widgets.
    return Scaffold(
      appBar: AppBar(
        // Here we take the value from the MyHomePage object that was created by
        // the method, and use it to set our appbar title.
        title: Text(widget.title),
      body: Center(
        // Center is a layout widget. It takes a single child and positions it
        // in the middle of the parent.
        child: Column(
          // Column is also a layout widget. It takes a list of children and
          // arranges them vertically. By default, it sizes itself to fit its
          // children horizontally, and tries to be as tall as its parent.
          // Invoke "debug painting" (press "p" in the console, choose the
          // "Toggle Debug Paint" action from the Flutter Inspector in Android
          // Studio, or the "Toggle Debug Paint" command in Visual Studio Code)
          // to see the wireframe for each widget.
          // Column has various properties to control how it sizes itself and
          // how it positions its children. Here we use mainAxisAlignment to
          // center the children vertically; the main axis here is the vertical
          // axis because Columns are vertical (the cross axis would be
          // horizontal).
          children: <Widget>[
              'You have pushed the button this many times:',
              style: Theme.of(context).textTheme.headline4,
      floatingActionButton: FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        child: Icon(Icons.add),
      ), // This trailing comma makes auto-formatting nicer for build methods.

Author: DigitalKatalis
Source Code: 
License: BSD-3-Clause license

#flutter #dart #test 

Joshua Yates

Joshua Yates


MEAN vs. MERN vs. MEVN - What’s the Difference

MEAN, MERN, MEVN - What they're all about...

You might've heard about the MEAN, MERN or MEVN stacks. Let's see what they're about and how they differ!

MEAN Vs. MERN Vs. MEVN Stack: What's the difference?

Applications and websites are taking the world by storm. Whether a professional or personal need, every person understands the value of dedicated apps and websites for their business or individual requirements. These interfaces to the internet hold an excellent reputation in ensuring the best marketing, attracting customers, and generating profitable revenues. Do you ever wonder how mobile app developers achieve so much from these applications?

Technology and its optimized use are the keys to success for any mobile or web app. As a result, many businesses resort to outsourcing their website development or mobile app development. It seems a good step, especially when the key decision-makers have least or no information about the development.

The issue starts when small businesses have to manage their web or app creation on limited budgets. Further, the basics of technologies are a must to understand the proper funding for web or apps creation. But what are these technologies?

Development requires a set of technologies, just like different departments in an organization. Henceforth, it is crucial to have the essential technologies that will help create but ensure smooth operations of the web and mobile applications. Do you know what the set of these technologies are called?

What is a technology stack?

A technology stack is the list of all necessary tools and technologies required in dedicated mobile application development. These are the frameworks, operating systems, languages, databases, web servers, APIs, scripting languages, etc.

Thus, all these different technologies work together to deliver an ultimate website or mobile application. Furthermore, the powerful combination of the technology stack makes the selection process easy and quick for the developers who can quickly start concentrating on quality development.

While the development or IT world is leading the way for new technologies, three stacks, i.e., MEAN, MERN, and MEVN, are front-runners in web or mobile app development. Let us understand these popular technology stacks and their differences one by one.

What is the MEAN stack?

MEAN stack is often synonyms with the entire technology stack due to its wide popularity. However, the reusable codes, end-to-end Java support, and use of a single language throughout the stack make MERN a preferred technology stack.


●      Database manager: MongoDB

●      Server-side application framework: ExpressJS

●      Front-end application framework: Angular

●      Cross-platform framework: Node.js


●      MEAN stack is best for the applications that are set to be hosted on the cloud. Thus, it comes with unparalleled flexibility, scalability, and rapid development.

●      It is one of the best-recommended technology stacks for full-stack JavaScript developers.


●      The consistent developments and updates in the MEAN stack make it challenging to manage for software developers.

What is the MERN stack?

MERN stack comes as an updated version to the MEAN. As a result, the high-end applications created using the MERN offer highly engaging and interactive user interfaces.


●      Database manager: MongoDB

●      Server-side application framework: ExpressJS

●      Front-end application framework: React

●      Cross-platform framework: Node.js


●      MERN stack offers multiple unmatchable performance and benefits to the developers like MVC, quick performance, efficiency, etc.

●      It has global support from the developers’ community and is behind the leading user interfaces of Airbnb, Dropbox, Facebook, etc.


●      React is based on a library, and hence developers have to look for third-party services.

What is the MEVN stack?

MEVN stack offers one of the quickest developments of different mobile and web-based applications. It uses multiple tools to provide high-end performing apps for numerous clients.


●      Database manager: MongoDB

●      Server-side application framework: ExpressJS

●      Front-end application framework: Vue.js

●      Cross-platform framework: Node.js


●      MEVN stack offers multiple benefits like MVC, platform independence, and works on a single language- JavaScript.

●      It gives a better understanding of server-side and client-side development.


●      Vue.js is a new language and still lacks support from the developers’ community.

MEAN Vs. MERN Vs. MEVN Stack: What’s the difference?

So, MEAN, MERN, and MEVN - MongoDB, Expressjs, and NodeJS remain the same. The difference is only in selecting the front-end frameworks, i.e., Angular in MEAN, React in MERN, and Vue.js in MEVN. Thus, it all comes to the difference between the front-end frameworks selected for mobile app development.

●      Angular (in MEAN): It comes from the Angular team of the technological giant Google. It is one of the traditional front-end frameworks that are typescript-based and is perfect for multiple developments- native desktop, native mobile, mobile web, web, etc.

The reduced customization options make developers search for other better options in front-end frameworks.

●      React (in MERN): The social media giant Facebook creates leading web applications that run effectively in a browser. The vast scope of scalability with popularity in the IT consultants, startups, and freelancers give React a stronghold against the traditional Angular. Not to miss are the multiple customization options offered to all mobile app developers.

●      Vue.js (in MEVN): The front-end framework developed by Evan You, a Chinese IT professional, in 2014. While it is still struggling to create a market like Angular and React, the developers are banking on its speed, quality documentation, approachability, and versatility.

Thus, any developer with knowledge of HTML5, CSS, JavaScript, etc., can select the technology stack based on the website or mobile app requirements. However, it is hard to declare a single winner as all three - MEAN, MERN, and MEVN have their separate set of benefits.

After knowing the difference between all three available, a careful selection of the front-end framework ensures the selection of the optimized technology for web or mobile application development.

MEAN vs. MERN vs. MEVN Stacks: What’s the Difference?

Within the JavaScript ecosystem, a particular app will consist of a combination of technologies, called a “stack.” The MEAN, MERN, and MEVN (pronounced “Mevin”) stacks are among the most popular technology stacks that developers use to create websites and mobile applications. But, what are the major differences between these stacks? And, do developers prefer one over the other? 

Today, we’ll explore the basics of MEAN, MERN, and MEVN and look at the benefits of using each technology stack in a development project. 

Here’s what we’ll cover in this blog: 

  • What is a technology stack? 
  • What are the MEAN, MERN, and MEVN stacks?
  • Which is better: MEAN, MERN, or MEVN? 
  • Why does Kenzie Academy teach the MERN stack?

What is a technology stack? 

First things first, tech stacks are comprised of the many components which work together to produce an application which serves the needs of users and businesses: 

  • A front-end framework does most of the “heavy lifting” of building a complex website or mobile app, so the developers and designers can focus on providing the specific features and fixes needed by the users and the business.
  • Often a CSS framework helps translate the design decisions of designers to easily-achievable and reproducible steps for developers.
  • A back-end framework does most of the “heavy lifting” of communication between the website or mobile app and the database and business logic.
  • Miscellaneous back-end technologies used for a variety of tasks, such as organizing the gradual release of experimental features, tracking and reporting errors in the system, or accommodating sudden increases in usage (such as when something goes viral).
  • Database technologies store and organize data, as well as provide features for searching, filtering, and reporting data.

What are the MEAN, MERN, and MEVN stacks? 

MEAN, MERN, and MEVN are technology stacks that help people create websites and mobile applications. All three include MongoDB, Express.js (hence why each begins with “ME”), and NodeJS. The primary difference between the MEAN, MERN, and MEVN stacks can be found in the third letter of each acronym. MEAN is a JavaScript stack that relies on the use of Angular for its front-end JavaScript framework, meanwhile, the MERN stack relies on React and its ecosystem. Finally, MEVN relies on Vue.js and its ecosystem. Here’s a more in-depth picture of the elements that make up these stacks: 

  • MongoDB – A “NoSQL” database used for storing data for a back-end JavaScript application. If your application has users, MongoDB is an example of a database where your user information will be kept.
  • Express.js – A light backend framework for serving content to the web. If your backend application needs to send information across the Internet, Express provides tools for accomplishing that.
  • Angular/React/Vue.js – Front-end JavaScript framework
  • NodeJS –  A JavaScript “runtime environment” used to run JavaScript outside of a browser, such as on a backend server in the cloud.

A big similarity between MERN, MEVN, and MEAN is that they’re all composed of open-source technologies. They also offer protection against Cross-Site Scripting (XSS) attacks, active support and helpful documentation, and user-interface components for building reusable bits of a web app. MEAN, MEVN, and MERN stacks are not complete without a testing suite, for ensuring everything works as intended, as well as support for MVC architecture (or similar)—which is a great way to produce a well-organized codebase. 

Ok. So, what’s the difference between Angular, React, and Vue? 

Since the primary difference between these stacks lies in their use of Angular, React, and Vue.js, let’s explore what those frameworks do. 

  • Angular is a front-end framework led by the Angular team at Google. It is Typescript-based by default and used for web, mobile web, native mobile, and native desktop development. Angular is popular in the business world and is often used by traditional organizations, like hospitals and banks. Angular is a more opinionated framework in that it isn’t as customizable as frameworks like React or Vue. 
  • React is a front-end framework for creating web applications to be run inside the browser. It was originally designed by Facebook to be able to support many millions of users. React is the most popular among the startup, freelance, and software consultancy crowds. It’s highly customizable and really good at scaling for massive numbers of users, which makes it easy for teams to be confident about future growth. 
  • Vue.js is an easy-to-learn JavaScript framework. It’s known for its approachability, versatility, quality documentation, and speed. Vue was released in 2014 and is considered an up-and-comer as it doesn’t have the same market reach as frameworks like Angular and React just yet—but it is a fan favorite!

Which is better MEAN, MERN, or MEVN? 

MEAN stack vs. MERN stack vs. MEVN stack… which one is best? These stacks are all very similar, which is why we only teach one to Kenzie Software Engineering students. Once a developer knows one of these 3 stacks, it won’t be too difficult to learn the others. All of these stacks are useful – it just depends on the type of project you’re taking on. 

In short, one isn’t necessarily better than another. Choosing the right stack for your software development process depends on the front-end framework or related tools you’d like to use. If a developer or team prefers to work with Angular, they may choose to work with the MEAN stack. Meanwhile, a developer or team who enjoys working with React will gravitate towards MERN. 

Why does Kenzie Academy teach the MERN stack? 

At Kenzie, we have been teaching our students the MERN stack since the beginning. Here’s why. 

More startups report preferring to use the MERN stack for app development. And, based on feedback from some of our Employer Partners, we’ve learned it’s an in-demand stack those new to the industry will benefit from learning. Here’s a visualization of the MERN stack: 

mern stack

As one of the most widely used stacks in web development today, Kenzie teaches the MERN stack to prepare graduates for a wide variety of Junior Web Developer roles. The MERN stack is also an excellent starting place for development beyond the web because it marries skills, concepts, and software design paradigms from across the broader world of software development.

Our immersive curriculum reaches beyond the MERN stack by also focusing on engineering skills, problem-solving and metacognitive strategies, as well as common programming language patterns, equipping students to adapt quickly to new tech. The ability to pick up new languages and tooling allows our graduates to grow in their careers beyond their first role.

MEAN vs. MERN vs. MEVN Stacks ? What's the difference ?

Full stack development

First, we have to know that those stacks are Full stacks so you do the Frontend and the Backend.
They are all JavaScript!
The Frontend and the Backend will be done through JavaScript Frameworks.

Technologies you should know before the comparison

It's a programming (scripting) language used both on the client-side and server-side that allows you to make web pages interactive.

It's a runtime environment that executes JavaScript outside the browser as writing Backend code.

Express.js: It is a back end web application framework for Node. It is designed for building web applications and APIs.

MongoDB: It's noSQL (Json-like) database .

Angular: It is a client side JavaScript framework was developed by Google.

React: It is a client side JavaScript framework was developed by Facebook.

Vue: It is a client side JavaScript framework was developed by a single person Evan You who was working in Google.

What is the difference between them ?

In those stacks there are common letters which are M - E - N .

  • M: MongoDB
  • E: Express.js
  • N: Node.js

Those are the Backend technologies be while the Frontend technologies are A - R - V for MEAN - MERN - MEVN .

Then Obviously,

  • A: Angular
  • R: React
  • V: Vue

So, choose the stack that you love but before you have to learn the basics if web development which are:

  • HTML5
  • CSS3
  • JavaScript
  • JS Dom and Bom
  • ES6 Syntax
  • SASS (optional but preferred)
  • CSS Frameworks ( Bootstrap, Tailwind CSS, etc...)

#mean #mern #mevn #mongodb #express #angular #react #vue

Hertha  Mayer

Hertha Mayer


Authentication In MEAN Stack - A Quick Guide

I consider myself an active StackOverflow user, despite my activity tends to vary depending on my daily workload. I enjoy answering questions with angular tag and I always try to create some working example to prove correctness of my answers.

To create angular demo I usually use either plunker or stackblitz or even jsfiddle. I like all of them but when I run into some errors I want to have a little bit more usable tool to undestand what’s going on.

Many people who ask questions on stackoverflow don’t want to isolate the problem and prepare minimal reproduction so they usually post all code to their questions on SO. They also tend to be not accurate and make a lot of mistakes in template syntax. To not waste a lot of time investigating where the error comes from I tried to create a tool that will help me to quickly find what causes the problem.

Angular demo runner
Online angular editor for building demo.

Let me show what I mean…

Template parser errors#

There are template parser errors that can be easy catched by stackblitz

It gives me some information but I want the error to be highlighted

#mean stack #angular 6 passport authentication #authentication in mean stack #full stack authentication #mean stack example application #mean stack login and registration angular 8 #mean stack login and registration angular 9 #mean stack tutorial #mean stack tutorial 2019 #passport.js

Autumn  Blick

Autumn Blick


How native is React Native? | React Native vs Native App Development

If you are undertaking a mobile app development for your start-up or enterprise, you are likely wondering whether to use React Native. As a popular development framework, React Native helps you to develop near-native mobile apps. However, you are probably also wondering how close you can get to a native app by using React Native. How native is React Native?

In the article, we discuss the similarities between native mobile development and development using React Native. We also touch upon where they differ and how to bridge the gaps. Read on.

A brief introduction to React Native

Let’s briefly set the context first. We will briefly touch upon what React Native is and how it differs from earlier hybrid frameworks.

React Native is a popular JavaScript framework that Facebook has created. You can use this open-source framework to code natively rendering Android and iOS mobile apps. You can use it to develop web apps too.

Facebook has developed React Native based on React, its JavaScript library. The first release of React Native came in March 2015. At the time of writing this article, the latest stable release of React Native is 0.62.0, and it was released in March 2020.

Although relatively new, React Native has acquired a high degree of popularity. The “Stack Overflow Developer Survey 2019” report identifies it as the 8th most loved framework. Facebook, Walmart, and Bloomberg are some of the top companies that use React Native.

The popularity of React Native comes from its advantages. Some of its advantages are as follows:

  • Performance: It delivers optimal performance.
  • Cross-platform development: You can develop both Android and iOS apps with it. The reuse of code expedites development and reduces costs.
  • UI design: React Native enables you to design simple and responsive UI for your mobile app.
  • 3rd party plugins: This framework supports 3rd party plugins.
  • Developer community: A vibrant community of developers support React Native.

Why React Native is fundamentally different from earlier hybrid frameworks

Are you wondering whether React Native is just another of those hybrid frameworks like Ionic or Cordova? It’s not! React Native is fundamentally different from these earlier hybrid frameworks.

React Native is very close to native. Consider the following aspects as described on the React Native website:

  • Access to many native platforms features: The primitives of React Native render to native platform UI. This means that your React Native app will use many native platform APIs as native apps would do.
  • Near-native user experience: React Native provides several native components, and these are platform agnostic.
  • The ease of accessing native APIs: React Native uses a declarative UI paradigm. This enables React Native to interact easily with native platform APIs since React Native wraps existing native code.

Due to these factors, React Native offers many more advantages compared to those earlier hybrid frameworks. We now review them.

#android app #frontend #ios app #mobile app development #benefits of react native #is react native good for mobile app development #native vs #pros and cons of react native #react mobile development #react native development #react native experience #react native framework #react native ios vs android #react native pros and cons #react native vs android #react native vs native #react native vs native performance #react vs native #why react native #why use react native

Ajay Kapoor


Top MERN Stack Development Company in India

PixelCrayons - Get MERN stack development services from certified full stack developers having 5+ years of experience. You can also hire dedicated team as your team extension on hourly or full time basis.

2X Faster Delivery
Strict NDA Terms
Flexible Engagement Models

Our MERN Stack Development Services

MERN stack includes the best JavaScript technologies. We have expertise in all four of them that enables us to deliver optimum MERN stack development services.

Stay ahead of competition with our professional, tailor-made & enterprise-grade MERN Stack development services. Our MERN Stack web development company combines development expertise with modern frameworks and technologies to address critical needs of global clients across industries.

#mern stack web development services #mern stack web development #mern stack development company #mern stack web development company #mern stack development services #mern stack companies