Build a Basic CRUD App with Vue.js and Node

This tutorial covers two primary builds, a frontend web app and backend REST API server.

I’ve danced the JavaScript framework shuffle for years starting with jQuery, then on to Angular. After being frustrated with Angular’s complexity, I found React and thought I was in the clear. What seemed simple on the surface ended up being a frustrating mess. Then I found Vue.js. It just felt right. It worked as expected. It was fast. The documentation was incredible. Templating was eloquent. There was a unanimous consensus around how to handle state management, conditional rendering, two-way binding, routing, and more.

This tutorial will take you step by step through scaffolding a Vue.js project, offloading secure authentication to Okta’s OpenID Connect API (OIDC), locking down protected routes, and performing CRUD operations through a backend REST API server. This tutorial uses the following technologies but doesn’t require intimate knowledge to follow along:

About Vue.js

Vue.js is a robust but simple Javascript framework. It has one of the lowest barriers to entry of any modern framework while providing all the required features for high performance web applications.

This tutorial covers two primary builds, a frontend web app and backend REST API server. The frontend will be a single page application (SPA) with a homepage, login and logout, and a posts manager.

Okta’s OpenID Connect (OIDC) will handle our web app’s authentication through the use of Okta’s Vue SDK. If an unauthenticated user navigates to the posts manager, the web app should attempt to authenticate the user.

The server will run Express with Sequelize and Epilogue. At a high level, with Sequelize and Epilogue you can quickly generate dynamic REST endpoints with just a few lines of code.

You will use JWT-based authentication when making requests from the web app and Okta’s JWT Verifier in an Express middleware to validate the token. Your app will expose the following endpoints which all require requests to have a valid access token.

- GET /posts
- GET /posts/:id
- POST /posts
- PUT /posts/:id
- DELETE /posts/:id


About Vue.js

To get your project off the ground quickly you can leverage the scaffolding functionality from vue-cli. For this tutorial, you are going to use the progressive web app (PWA) template that includes a handful of features including webpack, hot reloading, CSS extraction, and unit testing.

If you’re not familiar with the tenets of PWA, check out our ultimate guide to progressive web applications.
To install vue-cli run:

npm install -g vue-cli


Next, you need to initialize your project. When you run the vue init command just accept all the default values.

vue init pwa my-vue-app
cd ./my-vue-app
npm install
npm run dev


Point your favorite browser to [http://localhost:8080](http://localhost:8080 "http://localhost:8080") and you should see the fruits of your labor:

Extra Credit: Check out the other templates available for vue-cli.

About Vue.js

Let’s install bootstrap-vue so you can take advantage of the various premade components (plus you can keep the focus on functionality and not on custom CSS):

npm i --save bootstrap-vue bootstrap


To complete the installation, modify ./src/main.js to include bootstrap-vue and import the required CSS files. Your ./src/main.js file should look like this:

// The Vue build version to load with the `import` command
// (runtime-only or standalone) has been set in webpack.base.conf with an alias.
import Vue from 'vue'
import App from './App'
import router from './router'
import BootstrapVue from 'bootstrap-vue'
import 'bootstrap/dist/css/bootstrap.css'
import 'bootstrap-vue/dist/bootstrap-vue.css'

Vue.use(BootstrapVue)
Vue.config.productionTip = false

/* eslint-disable no-new */
new Vue({
  el: '#app',
  router,
  template: '',
  components: { App }
})


About Vue.js

Dealing with authentication in a web app is the bane of every developer’s existence. That’s where Okta comes in to secure your web applications with minimal code. To get started, you will need to create an OIDC application in Okta. Sign up for a forever-free developer account (or log in if you already have one).

Once logged in, create a new application by clicking “Add Application”.

Select the “Single-Page App” platform option.

The default application settings should be the same as those pictured.

To install the Okta Vue SDK, run the following command:

npm i --save @okta/okta-vue


Open ./src/router/index.js and replace the entire file with the following code.

import Vue from 'vue'
import Router from 'vue-router'
import Hello from '@/components/Hello'
import PostsManager from '@/components/PostsManager'
import Auth from '@okta/okta-vue'

Vue.use(Auth, {
  issuer: 'https://{yourOktaDomain}.com/oauth2/default',
  client_id: '{yourClientId}',
  redirect_uri: 'http://localhost:8080/implicit/callback',
  scope: 'openid profile email'
})

Vue.use(Router)

let router = new Router({
  mode: 'history',
  routes: [
    {
      path: '/',
      name: 'Hello',
      component: Hello
    },
    {
      path: '/implicit/callback',
      component: Auth.handleCallback()
    },
    {
      path: '/posts-manager',
      name: 'PostsManager',
      component: PostsManager,
      meta: {
        requiresAuth: true
      }
    }
  ]
})

router.beforeEach(Vue.prototype.$auth.authRedirectGuard())

export default router


You’ll need to replace {yourOktaDomain} and {yourClientId} which can be found on your application overview page in the Okta Developer Console. This will inject an authClient object into your Vue instance which can be accessed by calling this.$auth anywhere inside your Vue instance.

Vue.use(Auth, {
  issuer: 'https://{yourOktaDomain}.com/oauth2/default',
  client_id: '{yourClientId}',
  redirect_uri: 'http://localhost:8080/implicit/callback',
  scope: 'openid profile email'
})


The final step of Okta’s authentication flow is redirecting the user back to your app with the token values in the URL. The Auth.handleCallback() component included in the SDK handles the redirect and persists the tokens on the browser.

{
  path: '/implicit/callback',
  component: Auth.handleCallback()
}


You also need to lock down protected routes from being access by unauthenticated users. This is accomplished by implementing a navigation guard. As the name suggests, navigation guards are primarily used to guard navigations either by redirecting or canceling.

The SDK comes with the method auth.authRedirectGuard() that checks matched routes’ metadata for the key requiresAuth and redirects the user to the authentication flow if they are not authenticated.

router.beforeEach(Vue.prototype.$auth.authRedirectGuard())


With this navigation guard installed, any route that has the following metadata will be protected.

meta: {
  requiresAuth: true
}


About Vue.js

The web app’s layout is located in a component ./src/App.vue. You can use the router-view component to render the matched component for the given path.

For the main menu, you’ll want to change the visibility of certain menu items based on the status of the activeUser:

You can toggle the visibility of these menu items using the v-if directive in Vue.js that checks the existence of activeUser on the component. When the component is loaded (which calls created()) or when a route changes we want to refresh the activeUser.

Open ./src/App.vue and copy/paste the following code.


  
    
      
      My Vue App
      
        
          Home
          Posts Manager
          Login
          Logout
        
      
    
    
    
  





Every login must have a logout. The following snippet will logout your user, refresh the active user (which is now null), and then redirect the user to the homepage. This method is called when a user clicks on the logout link in the nav.

async logout () {
  await this.$auth.logout()
  await this.refreshActiveUser()
  this.$router.push('/')
}


Components are the building blocks within Vue.js. Each of your pages will be defined in the app as a component. Since the vue-cli webpack template utilizes vue-loader, your component source files have a convention that separates template, script, and style (see here).

Now that you’ve added vue-bootstrap, modify ./src/components/Hello.vue to remove the boilerplate links vue-cli generates.


  
    
      # Hello World

      
This is the homepage of your vue app

    
  





At this point you can stub out the Post Manager page to test your authentication flow. Once you confirm authentication works, you’ll start to build out the API calls and components required to perform CRUD operations on your Posts model.

Create a new file ./src/components/PostsManager.vue and paste the following code:


  
    # Posts Manager

    
Only authenticated users should see this page

  



About Vue.js

In your terminal run npm run dev (if it’s not already running). Navigate to [http://localhost:8080](http://localhost:8080 "http://localhost:8080") and you should see the new homepage.

If you click Posts Manager or Login you should be directed to Okta’s flow. Enter your Okta dev account credentials.

NOTE: If you are logged in to your Okta Developer Account you will be redirected automatically back to the app. You can test this by using incognito or private browsing mode.

If successful, you should return to the homepage logged in.

Clicking on Posts Manager link should render the protected component.

About Vue.js

Now that users can securely authenticate, you can build the REST API server to perform CRUD operations on a post model. Add the following dependencies to your project:

npm i --save express cors @okta/jwt-verifier sequelize sqlite3 epilogue axios


Then, create the file ./src/server.js and paste the following code.

const express = require('express')
const cors = require('cors')
const bodyParser = require('body-parser')
const Sequelize = require('sequelize')
const epilogue = require('epilogue')
const OktaJwtVerifier = require('@okta/jwt-verifier')

const oktaJwtVerifier = new OktaJwtVerifier({
  clientId: '{yourClientId}',
  issuer: 'https://{yourOktaDomain}.com/oauth2/default'
})

let app = express()
app.use(cors())
app.use(bodyParser.json())

// verify JWT token middleware
app.use((req, res, next) => {
  // require every request to have an authorization header
  if (!req.headers.authorization) {
    return next(new Error('Authorization header is required'))
  }
  let parts = req.headers.authorization.trim().split(' ')
  let accessToken = parts.pop()
  oktaJwtVerifier.verifyAccessToken(accessToken)
    .then(jwt => {
      req.user = {
        uid: jwt.claims.uid,
        email: jwt.claims.sub
      }
      next()
    })
    .catch(next) // jwt did not verify!
})

// For ease of this tutorial, we are going to use SQLite to limit dependencies
let database = new Sequelize({
  dialect: 'sqlite',
  storage: './test.sqlite'
})

// Define our Post model
// id, createdAt, and updatedAt are added by sequelize automatically
let Post = database.define('posts', {
  title: Sequelize.STRING,
  body: Sequelize.TEXT
})

// Initialize epilogue
epilogue.initialize({
  app: app,
  sequelize: database
})

// Create the dynamic REST resource for our Post model
let userResource = epilogue.resource({
  model: Post,
  endpoints: ['/posts', '/posts/:id']
})

// Resets the database and launches the express app on :8081
database
  .sync({ force: true })
  .then(() => {
    app.listen(8081, () => {
      console.log('listening to port localhost:8081')
    })
  })


Make sure to replace the variables {yourOktaDomain} and {clientId} in the above code with values from your OIDC app in Okta.

About Vue.js

Sequelize is a promise-based ORM for Node.js. It supports the dialects PostgreSQL, MySQL, SQLite, and MSSQL and features solid transaction support, relations, read replication, and more.

For ease of this tutorial, you’re going to use SQLite to limit external dependencies. The following code initializes a Sequelize instance using SQLite as your driver.

let database = new Sequelize({
  dialect: 'sqlite',
  storage: './test.sqlite'
})


Each post has a title and body. (The fields createdAt, and updatedAt are added by Sequelize automatically). With Sequelize, you define models by calling define() on your instance.

let Post = database.define('posts', {
  title: Sequelize.STRING,
  body: Sequelize.TEXT
})


About Vue.js

Epilogue creates flexible REST endpoints from Sequelize models within an Express app. If you ever coded REST endpoints you know how much repetition there is. D.R.Y. FTW!

// Initialize epilogue
epilogue.initialize({
  app: app,
  sequelize: database
})

// Create the dynamic REST resource for our Post model
let userResource = epilogue.resource({
  model: Post,
  endpoints: ['/posts', '/posts/:id']
})


About Vue.js

This is the most crucial component of your REST API server. Without this middleware any user can perform CRUD operations on our database. If no authorization header is present, or the access token is invalid, the API call will fail and return an error.

// verify JWT token middleware
app.use((req, res, next) => {
  // require every request to have an authorization header
  if (!req.headers.authorization) {
    return next(new Error('Authorization header is required'))
  }
  let parts = req.headers.authorization.trim().split(' ')
  let accessToken = parts.pop()
  oktaJwtVerifier.verifyAccessToken(accessToken)
    .then(jwt => {
      req.user = {
        uid: jwt.claims.uid,
        email: jwt.claims.sub
      }
      next()
    })
    .catch(next) // jwt did not verify!
})


About Vue.js

Open a new terminal window and run the server with the command node ./src/server. You should see debug information from Sequelize and the app listening on port 8081.

About Vue.js

Now that the REST API server is complete, you can start wiring up your posts manager to fetch posts, create posts, edit posts, and delete posts.

I always centralize my API integrations into a single helper module. This keeps the code in components much cleaner and provides single location in case you need to change anything with the API request.

Create a file ./src/api.js and copy/paste the following code into it:

import Vue from 'vue'
import axios from 'axios'

const client = axios.create({
  baseURL: 'http://localhost:8081/',
  json: true
})

export default {
  async execute (method, resource, data) {
    // inject the accessToken for each request
    let accessToken = await Vue.prototype.$auth.getAccessToken()
    return client({
      method,
      url: resource,
      data,
      headers: {
        Authorization: `Bearer ${accessToken}`
      }
    }).then(req => {
      return req.data
    })
  },
  getPosts () {
    return this.execute('get', '/posts')
  },
  getPost (id) {
    return this.execute('get', `/posts/${id}`)
  },
  createPost (data) {
    return this.execute('post', '/posts', data)
  },
  updatePost (id, data) {
    return this.execute('put', `/posts/${id}`, data)
  },
  deletePost (id) {
    return this.execute('delete', `/posts/${id}`)
  }
}


When you authenticate with OIDC, an access token is persisted locally in the browser. Since each API request must have an access token, you can fetch it from the authentication client and set it in the request.

let accessToken = await Vue.prototype.$auth.getAccessToken()
return client({
  method,
  url: resource,
  data,
  headers: {
    Authorization: `Bearer ${accessToken}`
  }
})


By creating the following proxy methods inside your API helper, the code outside the helper module remains clean and semantic.

getPosts () {
  return this.execute('get', '/posts')
},
getPost (id) {
  return this.execute('get', `/posts/${id}`)
},
createPost (data) {
  return this.execute('post', '/posts', data)
},
updatePost (id, data) {
  return this.execute('put', `/posts/${id}`, data)
},
deletePost (id) {
  return this.execute('delete', `/posts/${id}`)
}


You now have all the components required to wire up your posts manager component to make CRUD operations via the REST API. Open ./src/components/PostsManager.vue and copy/paste the following code.


  
    # Posts Manager

    Loading...
    
      
        
          
            
              ID
              Title
              Updated At
               
            
          
          
            
              {{ post.id }}
              {{ post.title }}
              {{ post.updatedAt }}
              
                [Edit](# "Edit") - 
                [Delete](# "Delete")
              
            
          
        
      
      
        
          
            
              
            
            
              
            
            
              Save Post
            
          
        
      
    
  





About Vue.js

You’ll use api.getPosts() to fetch posts from your REST API server. You should refresh the list of posts when the component is loaded and after any mutating operation (create, update, or delete).

async refreshPosts () {
  this.loading = true
  this.posts = await api.getPosts()
  this.loading = false
}


The attribute this.loading is toggled so the UI can reflect the pending API call. You might not see the loading message since the API request is not going out to the internet.

About Vue.js

A form is included in the component to save a post. It’s wired up to call savePosts() when the form is submitted and its inputs are bound to the model object on the component.

When savePost() is called, it will perform either an update or create based on the existence of model.id. This is mostly a shortcut to not have to define two separate forms for creating and updating.

async savePost () {
  if (this.model.id) {
    await api.updatePost(this.model.id, this.model)
  } else {
    await api.createPost(this.model)
  }
  this.model = {} // reset form
  await this.refreshPosts()
}


About Vue.js

When updating a post, you first must load the post into the form. This sets model.id which will the trigger an update in savePost().

async populatePostToEdit (post) {
  this.model = Object.assign({}, post)
}


Important: The Object.assign() call copies the value of the post argument rather than the reference. When dealing with mutation of objects in Vue, you should always set to the value, not reference.

About Vue.js

To delete a post simply call api.deletePost(id). It’s always good to confirm before delete so let’s throw in a native confirmation alert box to make sure the click was intentional.

async deletePost (id) {
  if (confirm('Are you sure you want to delete this post?')) {
    await api.deletePost(id)
    await this.refreshPosts()
  }
}


About Vue.js

Make sure both the server and frontend are running.

Terminal #1

node ./src/server


Terminal #2

npm run dev


Navigate to [http://localhost:8080](http://localhost:8080 "http://localhost:8080") and give it a whirl.

About Vue.js

As I said at the top of this post, I think Vue stands head and shoulders above other frameworks. Here are five quick reasons why:

I covered a lot of material in this tutorial but don’t feel bad if you didn’t grasp everything the first time. The more you work with these technologies, the more familiar they will become.

To learn more about Vue.js head over to https://vuejs.org or check out these other great resources from the @oktadev team:

You can find the source code for the application developed in this post at https://github.com/oktadeveloper/okta-vue-node-example.

#vue-js #node-js #javascript #web-development

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Buddha Community

Build a Basic CRUD App with Vue.js and Node

NBB: Ad-hoc CLJS Scripting on Node.js

Nbb

Not babashka. Node.js babashka!?

Ad-hoc CLJS scripting on Node.js.

Status

Experimental. Please report issues here.

Goals and features

Nbb's main goal is to make it easy to get started with ad hoc CLJS scripting on Node.js.

Additional goals and features are:

  • Fast startup without relying on a custom version of Node.js.
  • Small artifact (current size is around 1.2MB).
  • First class macros.
  • Support building small TUI apps using Reagent.
  • Complement babashka with libraries from the Node.js ecosystem.

Requirements

Nbb requires Node.js v12 or newer.

How does this tool work?

CLJS code is evaluated through SCI, the same interpreter that powers babashka. Because SCI works with advanced compilation, the bundle size, especially when combined with other dependencies, is smaller than what you get with self-hosted CLJS. That makes startup faster. The trade-off is that execution is less performant and that only a subset of CLJS is available (e.g. no deftype, yet).

Usage

Install nbb from NPM:

$ npm install nbb -g

Omit -g for a local install.

Try out an expression:

$ nbb -e '(+ 1 2 3)'
6

And then install some other NPM libraries to use in the script. E.g.:

$ npm install csv-parse shelljs zx

Create a script which uses the NPM libraries:

(ns script
  (:require ["csv-parse/lib/sync$default" :as csv-parse]
            ["fs" :as fs]
            ["path" :as path]
            ["shelljs$default" :as sh]
            ["term-size$default" :as term-size]
            ["zx$default" :as zx]
            ["zx$fs" :as zxfs]
            [nbb.core :refer [*file*]]))

(prn (path/resolve "."))

(prn (term-size))

(println (count (str (fs/readFileSync *file*))))

(prn (sh/ls "."))

(prn (csv-parse "foo,bar"))

(prn (zxfs/existsSync *file*))

(zx/$ #js ["ls"])

Call the script:

$ nbb script.cljs
"/private/tmp/test-script"
#js {:columns 216, :rows 47}
510
#js ["node_modules" "package-lock.json" "package.json" "script.cljs"]
#js [#js ["foo" "bar"]]
true
$ ls
node_modules
package-lock.json
package.json
script.cljs

Macros

Nbb has first class support for macros: you can define them right inside your .cljs file, like you are used to from JVM Clojure. Consider the plet macro to make working with promises more palatable:

(defmacro plet
  [bindings & body]
  (let [binding-pairs (reverse (partition 2 bindings))
        body (cons 'do body)]
    (reduce (fn [body [sym expr]]
              (let [expr (list '.resolve 'js/Promise expr)]
                (list '.then expr (list 'clojure.core/fn (vector sym)
                                        body))))
            body
            binding-pairs)))

Using this macro we can look async code more like sync code. Consider this puppeteer example:

(-> (.launch puppeteer)
      (.then (fn [browser]
               (-> (.newPage browser)
                   (.then (fn [page]
                            (-> (.goto page "https://clojure.org")
                                (.then #(.screenshot page #js{:path "screenshot.png"}))
                                (.catch #(js/console.log %))
                                (.then #(.close browser)))))))))

Using plet this becomes:

(plet [browser (.launch puppeteer)
       page (.newPage browser)
       _ (.goto page "https://clojure.org")
       _ (-> (.screenshot page #js{:path "screenshot.png"})
             (.catch #(js/console.log %)))]
      (.close browser))

See the puppeteer example for the full code.

Since v0.0.36, nbb includes promesa which is a library to deal with promises. The above plet macro is similar to promesa.core/let.

Startup time

$ time nbb -e '(+ 1 2 3)'
6
nbb -e '(+ 1 2 3)'   0.17s  user 0.02s system 109% cpu 0.168 total

The baseline startup time for a script is about 170ms seconds on my laptop. When invoked via npx this adds another 300ms or so, so for faster startup, either use a globally installed nbb or use $(npm bin)/nbb script.cljs to bypass npx.

Dependencies

NPM dependencies

Nbb does not depend on any NPM dependencies. All NPM libraries loaded by a script are resolved relative to that script. When using the Reagent module, React is resolved in the same way as any other NPM library.

Classpath

To load .cljs files from local paths or dependencies, you can use the --classpath argument. The current dir is added to the classpath automatically. So if there is a file foo/bar.cljs relative to your current dir, then you can load it via (:require [foo.bar :as fb]). Note that nbb uses the same naming conventions for namespaces and directories as other Clojure tools: foo-bar in the namespace name becomes foo_bar in the directory name.

To load dependencies from the Clojure ecosystem, you can use the Clojure CLI or babashka to download them and produce a classpath:

$ classpath="$(clojure -A:nbb -Spath -Sdeps '{:aliases {:nbb {:replace-deps {com.github.seancorfield/honeysql {:git/tag "v2.0.0-rc5" :git/sha "01c3a55"}}}}}')"

and then feed it to the --classpath argument:

$ nbb --classpath "$classpath" -e "(require '[honey.sql :as sql]) (sql/format {:select :foo :from :bar :where [:= :baz 2]})"
["SELECT foo FROM bar WHERE baz = ?" 2]

Currently nbb only reads from directories, not jar files, so you are encouraged to use git libs. Support for .jar files will be added later.

Current file

The name of the file that is currently being executed is available via nbb.core/*file* or on the metadata of vars:

(ns foo
  (:require [nbb.core :refer [*file*]]))

(prn *file*) ;; "/private/tmp/foo.cljs"

(defn f [])
(prn (:file (meta #'f))) ;; "/private/tmp/foo.cljs"

Reagent

Nbb includes reagent.core which will be lazily loaded when required. You can use this together with ink to create a TUI application:

$ npm install ink

ink-demo.cljs:

(ns ink-demo
  (:require ["ink" :refer [render Text]]
            [reagent.core :as r]))

(defonce state (r/atom 0))

(doseq [n (range 1 11)]
  (js/setTimeout #(swap! state inc) (* n 500)))

(defn hello []
  [:> Text {:color "green"} "Hello, world! " @state])

(render (r/as-element [hello]))

Promesa

Working with callbacks and promises can become tedious. Since nbb v0.0.36 the promesa.core namespace is included with the let and do! macros. An example:

(ns prom
  (:require [promesa.core :as p]))

(defn sleep [ms]
  (js/Promise.
   (fn [resolve _]
     (js/setTimeout resolve ms))))

(defn do-stuff
  []
  (p/do!
   (println "Doing stuff which takes a while")
   (sleep 1000)
   1))

(p/let [a (do-stuff)
        b (inc a)
        c (do-stuff)
        d (+ b c)]
  (prn d))
$ nbb prom.cljs
Doing stuff which takes a while
Doing stuff which takes a while
3

Also see API docs.

Js-interop

Since nbb v0.0.75 applied-science/js-interop is available:

(ns example
  (:require [applied-science.js-interop :as j]))

(def o (j/lit {:a 1 :b 2 :c {:d 1}}))

(prn (j/select-keys o [:a :b])) ;; #js {:a 1, :b 2}
(prn (j/get-in o [:c :d])) ;; 1

Most of this library is supported in nbb, except the following:

  • destructuring using :syms
  • property access using .-x notation. In nbb, you must use keywords.

See the example of what is currently supported.

Examples

See the examples directory for small examples.

Also check out these projects built with nbb:

API

See API documentation.

Migrating to shadow-cljs

See this gist on how to convert an nbb script or project to shadow-cljs.

Build

Prequisites:

  • babashka >= 0.4.0
  • Clojure CLI >= 1.10.3.933
  • Node.js 16.5.0 (lower version may work, but this is the one I used to build)

To build:

  • Clone and cd into this repo
  • bb release

Run bb tasks for more project-related tasks.

Download Details:
Author: borkdude
Download Link: Download The Source Code
Official Website: https://github.com/borkdude/nbb 
License: EPL-1.0

#node #javascript

Aria Barnes

Aria Barnes

1622719015

Why use Node.js for Web Development? Benefits and Examples of Apps

Front-end web development has been overwhelmed by JavaScript highlights for quite a long time. Google, Facebook, Wikipedia, and most of all online pages use JS for customer side activities. As of late, it additionally made a shift to cross-platform mobile development as a main technology in React Native, Nativescript, Apache Cordova, and other crossover devices. 

Throughout the most recent couple of years, Node.js moved to backend development as well. Designers need to utilize a similar tech stack for the whole web project without learning another language for server-side development. Node.js is a device that adjusts JS usefulness and syntax to the backend. 

What is Node.js? 

Node.js isn’t a language, or library, or system. It’s a runtime situation: commonly JavaScript needs a program to work, however Node.js makes appropriate settings for JS to run outside of the program. It’s based on a JavaScript V8 motor that can run in Chrome, different programs, or independently. 

The extent of V8 is to change JS program situated code into machine code — so JS turns into a broadly useful language and can be perceived by servers. This is one of the advantages of utilizing Node.js in web application development: it expands the usefulness of JavaScript, permitting designers to coordinate the language with APIs, different languages, and outside libraries.

What Are the Advantages of Node.js Web Application Development? 

Of late, organizations have been effectively changing from their backend tech stacks to Node.js. LinkedIn picked Node.js over Ruby on Rails since it took care of expanding responsibility better and decreased the quantity of servers by multiple times. PayPal and Netflix did something comparative, just they had a goal to change their design to microservices. We should investigate the motivations to pick Node.JS for web application development and when we are planning to hire node js developers. 

Amazing Tech Stack for Web Development 

The principal thing that makes Node.js a go-to environment for web development is its JavaScript legacy. It’s the most well known language right now with a great many free devices and a functioning local area. Node.js, because of its association with JS, immediately rose in ubiquity — presently it has in excess of 368 million downloads and a great many free tools in the bundle module. 

Alongside prevalence, Node.js additionally acquired the fundamental JS benefits: 

  • quick execution and information preparing; 
  • exceptionally reusable code; 
  • the code is not difficult to learn, compose, read, and keep up; 
  • tremendous asset library, a huge number of free aides, and a functioning local area. 

In addition, it’s a piece of a well known MEAN tech stack (the blend of MongoDB, Express.js, Angular, and Node.js — four tools that handle all vital parts of web application development). 

Designers Can Utilize JavaScript for the Whole Undertaking 

This is perhaps the most clear advantage of Node.js web application development. JavaScript is an unquestionable requirement for web development. Regardless of whether you construct a multi-page or single-page application, you need to know JS well. On the off chance that you are now OK with JavaScript, learning Node.js won’t be an issue. Grammar, fundamental usefulness, primary standards — every one of these things are comparable. 

In the event that you have JS designers in your group, it will be simpler for them to learn JS-based Node than a totally new dialect. What’s more, the front-end and back-end codebase will be basically the same, simple to peruse, and keep up — in light of the fact that they are both JS-based. 

A Quick Environment for Microservice Development 

There’s another motivation behind why Node.js got famous so rapidly. The environment suits well the idea of microservice development (spilling stone monument usefulness into handfuls or many more modest administrations). 

Microservices need to speak with one another rapidly — and Node.js is probably the quickest device in information handling. Among the fundamental Node.js benefits for programming development are its non-obstructing algorithms.

Node.js measures a few demands all at once without trusting that the first will be concluded. Many microservices can send messages to one another, and they will be gotten and addressed all the while. 

Versatile Web Application Development 

Node.js was worked in view of adaptability — its name really says it. The environment permits numerous hubs to run all the while and speak with one another. Here’s the reason Node.js adaptability is better than other web backend development arrangements. 

Node.js has a module that is liable for load adjusting for each running CPU center. This is one of numerous Node.js module benefits: you can run various hubs all at once, and the environment will naturally adjust the responsibility. 

Node.js permits even apportioning: you can part your application into various situations. You show various forms of the application to different clients, in light of their age, interests, area, language, and so on. This builds personalization and diminishes responsibility. Hub accomplishes this with kid measures — tasks that rapidly speak with one another and share a similar root. 

What’s more, Node’s non-hindering solicitation handling framework adds to fast, letting applications measure a great many solicitations. 

Control Stream Highlights

Numerous designers consider nonconcurrent to be one of the two impediments and benefits of Node.js web application development. In Node, at whatever point the capacity is executed, the code consequently sends a callback. As the quantity of capacities develops, so does the number of callbacks — and you end up in a circumstance known as the callback damnation. 

In any case, Node.js offers an exit plan. You can utilize systems that will plan capacities and sort through callbacks. Systems will associate comparable capacities consequently — so you can track down an essential component via search or in an envelope. At that point, there’s no compelling reason to look through callbacks.

 

Final Words

So, these are some of the top benefits of Nodejs in web application development. This is how Nodejs is contributing a lot to the field of web application development. 

I hope now you are totally aware of the whole process of how Nodejs is really important for your web project. If you are looking to hire a node js development company in India then I would suggest that you take a little consultancy too whenever you call. 

Good Luck!

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Hire Dedicated Node.js Developers - Hire Node.js Developers

If you look at the backend technology used by today’s most popular apps there is one thing you would find common among them and that is the use of NodeJS Framework. Yes, the NodeJS framework is that effective and successful.

If you wish to have a strong backend for efficient app performance then have NodeJS at the backend.

WebClues Infotech offers different levels of experienced and expert professionals for your app development needs. So hire a dedicated NodeJS developer from WebClues Infotech with your experience requirement and expertise.

So what are you waiting for? Get your app developed with strong performance parameters from WebClues Infotech

For inquiry click here: https://www.webcluesinfotech.com/hire-nodejs-developer/

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Aria Barnes

Aria Barnes

1625232484

Why is Vue JS the most Preferred Choice for Responsive Web Application Development?

For more than two decades, JavaScript has facilitated businesses to develop responsive web applications for their customers. Used both client and server-side, JavaScript enables you to bring dynamics to pages through expanded functionality and real-time modifications.

Did you know!

According to a web development survey 2020, JavaScript is the most used language for the 8th year, with 67.7% of people choosing it. With this came up several javascript frameworks for frontend, backend development, or even testing.

And one such framework is Vue.Js. It is used to build simple projects and can also be advanced to create sophisticated apps using state-of-the-art tools. Beyond that, some other solid reasons give Vuejs a thumbs up for responsive web application development.

Want to know them? Then follow this blog until the end. Through this article, I will describe all the reasons and benefits of Vue js development. So, stay tuned.

Vue.Js - A Brief Introduction

Released in the year 2014 for public use, Vue.Js is an open-source JavaScript framework used to create UIs and single-page applications. It has over 77.4 million likes on Github for creating intuitive web interfaces.

The recent version is Vue.js 2.6, and is the second most preferred framework according to Stack Overflow Developer Survey 2019.

Every Vue.js development company is widely using the framework across the world for responsive web application development. It is centered around the view layer, provides a lot of functionality for the view layer, and builds single-page web applications.

Some most astonishing stats about Vue.Js:

• Vue was ranked #2 in the Front End JavaScript Framework rankings in the State of JS 2019 survey by developers.

• Approximately 427k to 693k sites are built with Vue js, according to Wappalyzer and BuiltWith statistics of June 2020.

• According to the State of JS 2019 survey, 40.5% of JavaScript developers are currently using Vue, while 34.5% have shown keen interest in using it in the future.

• In Stack Overflow's Developer Survey 2020, Vue was ranked the 3rd most popular front-end JavaScript framework.

Why is Vue.Js so popular?

• High-speed run-time performance
• Vue.Js uses a virtual DOM.
• The main focus is on the core library, while the collaborating libraries handle other features such as global state management and routing.
• Vue.JS provides responsive visual components.

Top 7 Reasons to Choose Vue JS for Web Application Development

Vue js development has certain benefits, which will encourage you to use it in your projects. For example, Vue.js is similar to Angular and React in many aspects, and it continues to enjoy increasing popularity compared to other frameworks.

The framework is only 20 kilobytes in size, making it easy for you to download files instantly. Vue.js easily beats other frameworks when it comes to loading times and usage.

Take a look at the compelling advantages of using Vue.Js for web app development.

#1 Simple Integration

Vue.Js is popular because it allows you to integrate Vue.js into other frameworks such as React, enabling you to customize the project as per your needs and requirements.

It helps you build apps with Vue.js from scratch and introduce Vue.js elements into their existing apps. Due to its ease of integration, Vue.js is becoming a popular choice for web development as it can be used with various existing web applications.

You can feel free to include Vue.js CDN and start using it. Most third-party Vue components and libraries are additionally accessible and supported with the Vue.js CDN.

You don't need to set up node and npm to start using Vue.js. This implies that it helps develop new web applications, just like modifying previous applications.

The diversity of components allows you to create different types of web applications and replace existing frameworks. In addition, you can also choose to hire Vue js developers to use the technology to experiment with many other JavaScript applications.

#2 Easy to Understand

One of the main reasons for the growing popularity of Vue.Js is that the framework is straightforward to understand for individuals. This means that you can easily add Vue.Js to your web projects.

Also, Vue.Js has a well-defined architecture for storing your data with life-cycle and custom methods. Vue.Js also provides additional features such as watchers, directives, and computed properties, making it extremely easy to build modern apps and web applications with ease.

Another significant advantage of using the Vue.Js framework is that it makes it easy to build small and large-scale web applications in the shortest amount of time.

#3 Well-defined Ecosystem

The VueJS ecosystem is vibrant and well-defined, allowing Vue.Js development company to switch users to VueJS over other frameworks for web app development.

Without spending hours, you can easily find solutions to your problems. Furthermore, VueJs lets you choose only the building blocks you need.

Although the main focus of Vue is the view layer, with the help of Vue Router, Vue Test Utils, Vuex, and Vue CLI, you can find solutions and recommendations for frequently occurring problems.

The problems fall into these categories, and hence it becomes easy for programmers to get started with coding right away and not waste time figuring out how to use these tools.

The Vue ecosystem is easy to customize and scales between a library and a framework. Compared to other frameworks, its development speed is excellent, and it can also integrate different projects. This is the reason why most website development companies also prefer the Vue.Js ecosystem over others.

#4 Flexibility

Another benefit of going with Vue.Js for web app development needs is flexibility. Vue.Js provides an excellent level of flexibility. And makes it easier for web app development companies to write their templates in HTML, JavaScript, or pure JavaScript using virtual nodes.

Another significant benefit of using Vue.Js is that it makes it easier for developers to work with tools like templating engines, CSS preprocessors, and type checking tools like TypeScript.

#5 Two-Way Communication

Vue.Js is an excellent option for you because it encourages two-way communication. This has become possible with the MVVM architecture to handle HTML blocks. In this way, Vue.Js is very similar to Angular.Js, making it easier to handle HTML blocks as well.

With Vue.Js, two-way data binding is straightforward. This means that any changes made by the developer to the UI are passed to the data, and the changes made to the data are reflected in the UI.

This is also one reason why Vue.Js is also known as reactive because it can react to changes made to the data. This sets it apart from other libraries such as React.Js, which are designed to support only one-way communication.

#6 Detailed Documentation

One essential thing is well-defined documentation that helps you understand the required mechanism and build your application with ease. It shows all the options offered by the framework and related best practice examples.

Vue has excellent docs, and its API references are one of the best in the industry. They are well written, clear, and accessible in dealing with everything you need to know to build a Vue application.

Besides, the documentation at Vue.js is constantly improved and updated. It also includes a simple introductory guide and an excellent overview of the API. Perhaps, this is one of the most detailed documentation available for this type of language.

#7 Large Community Support

Support for the platform is impressive. In 2018, support continued to impress as every question was answered diligently. Over 6,200 problems were solved with an average resolution time of just six hours.

To support the community, there are frequent release cycles of updated information. Furthermore, the community continues to grow and develop with backend support from developers.



Wrapping Up

VueJS is an incredible choice for responsive web app development. Since it is lightweight and user-friendly, it builds a fast and integrated web application. The capabilities and potential of VueJS for web app development are extensive.

While Vuejs is simple to get started with, using it to build scalable web apps requires professionalism. Hence, you can approach a top Vue js development company in India to develop high-performing web apps.

Equipped with all the above features, it doesn't matter whether you want to build a small concept app or a full-fledged web app; Vue.Js is the most performant you can rely on.

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Node JS Development Advantages - How Your App Will Benefit From This JavaScript Framework

Web development has been controlling the JavaScript system features for many years. Many big online sites use Java Script for their everyday operations. And recently there has been a change and a shift towards cross-platform mobile application development. The main software frameworks in work these days are React native, apache Cordova, native script and hybrid tools. In the last ten years, Node.JS has been used as a backend development framework. Developers nowadays want to learn and use the same technologies for one entire website. They do not want to learn an entire language for server development. And Node.JS is able to adapt all the functions and syntaxes to the backend services from JavaScript. If you do not know the languages or syntaxes for Node JS development, you can look for an online guide. These guides have a detailed overview of the additional functions and basic systems. You will also find simple tasks in these guides. To read more click on the link.

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