What is better to learn, AngularJS or Angular 5?

What is better to learn, AngularJS or Angular 5?

There is a huge difference between AngularJS and Angular 5. Every single detail of the framework has been changed whether let it be from JavaScript to Typescript or modifications of components as well new features Built Optimizer, Router Hooks and much more...

There is a huge difference between AngularJS and Angular 5. Every single detail of the framework has been changed whether let it be from JavaScript to Typescript or modifications of components as well new features Built Optimizer, Router Hooks and much more...

AngularJS is a robust JavaScript framework which was introduced by the tech giant Google in 2009. It brought revolutionary changes in the web development field, and the developer community warmly welcomed it. AngularJS app development has become a popular framework due to its fast-performing features. It also helps to create an interactive Single Page App (SPA) which offers terrific user experience.

I would suggest you go with the latest version of Angular. Right now Angular 7 is the latest but according to the question asked we will be moving to the Angular 5 and why to choose Angular 5?

For each and every developer it's an easy task to learn JavaScript which is already there in AngularJS. The tough part comes when you head to the TypeScript. Many developers have faced trouble while learning TypeScript! It's not as easy as learning JavaScript. There have been many improvements, bug fixes, and enhanced features rolled out in each and every update. So it's not necessary to start AngularJS from the starting.

The reason why I am suggesting Angular 5 will contain all the updated features and components which were brought in the Angular 2 and 4. Introduced in Angular 2, TypeScript is an open source programming language built by Microsoft. It is a superscript of JS. TypeScript will audit and report the bugs found & will leverage the system to help you write codes faster. Instead, if you want to convert your JS code into TypeScript, you can do that manually. It has been updated regularly with new features and bugs fix. To make it more clear for you, Let's get into a brief introduction of Angular 5:

Angular is quite popular for its exceptional Mobile and Web apps of the Single Page Applications. The Google team is more focused to make it much smaller, faster and convenient app with every update. Angular 5 includes above upgrades among its predecessors :

•   Built Optimizer: It made the application run much smoother and faster by clearing out irrelevant codes. Basically, the length of the JS code decreases.

•   Router Hooks: The Angular Router empowers navigation from one view to the next as users perform application tasks. Router cycles can also be tracked by the developers from the start till end.

•   Multiple Aliases: Accessing numerous classes will also broaden the circumstances of calling the same function or method in both classes or inherit one from another. Whatever be the case, coders will earn enhancement in multitasking.

•   Better Service workers support: Angular inherited this theory from Github’s service worker package and sees activation through modification and recoding, supporting causes for a myriad of applications.

•   Web applications at disposal: Since, Angular 5 enhances the existing capabilities of HTML, coders, and testers can easily transfer functionalities from one platform to another without the necessity of many alterations.

•   CLI: CLI stands for Command Line Interface. It is recommended to use this, just to save an amount of time for configuring, installing and wiring all together. On Angular 5, the projects will be developed by CLI v1.5.

•   Material Design Components: Material Designing has now reworked and will be compatible with the Server side.

•   Typescript: The Typescript functionality was first introduced in Angular 2. Now it has been updated to Typescript v2.3 which makes the process super-fast.

•   Standardized Functionalities: In the previous version, the browser has to rely on to add Numberings, currency pipes, and date. Angular 5 have made it to a standardized manner and let the developers not to be dependent on those browsers anymore.

 

You can also check our article on What's new in Angular 7? if you're keen to learn more about Angular 7. Hence, we will be updating our list of blogs based on the latest releases of technologies such as NodeJS, ROR, and Angular app development and many other frameworks and libraries.

What are the best alternatives for angular js?

<img src="https://moriohcdn.b-cdn.net/193902114c.png">There are numerous frameworks and libraries used across the globe. If not angular, there are platforms like React, Vue, Aurelia and so on for app development.

There are numerous frameworks and libraries used across the globe. If not angular, there are platforms like React, Vue, Aurelia and so on for app development.

Angular 8 Node & Express JS File Upload

Angular 8 Node & Express JS File Upload

In this Angular 8 and Node.js tutorial, we are going to look at how to upload files on the Node server. To create Angular image upload component, we will be using Angular 8 front-end framework along with ng2-file-upload NPM package; It’s an easy to use Angular directives for uploading the files.

In this Angular 8 and Node.js tutorial, we are going to look at how to upload files on the Node server. To create Angular image upload component, we will be using Angular 8 front-end framework along with ng2-file-upload NPM package; It’s an easy to use Angular directives for uploading the files.

We are also going to take the help of Node.js to create the backend server for Image or File uploading demo. Initially, we’ll set up an Angular 8 web app from scratch using Angular CLI. You must have Node.js and Angular CLI installed in your system.

We’ll create the local server using Node.js and multer middleware. Multer is a node.js middleware for handling multipart/form-data, which is primarily used for uploading files. Once we are done setting up front-end and backend for our File uploading demo then, we’ll understand step by step how to configure file uploading in Angular 8 app using Node server.

Prerequisite

In order to show you Angular 8 File upload demo, you must have Node.js and Angular CLI installed in your system. If not then check out this tutorial: Set up Node JS

Run following command to install Angular CLI:

npm install @angular/cli -g

Install Angular 8 App

Run command to install Angular 8 project:

ng new angular-node-file-upload

# ? Would you like to add Angular routing? No
# ? Which stylesheet format would you like to use? CSS
cd angular-node-file-upload

Show Alert Messages When File Uploaded

We are going to install and configure ngx-toastr an NPM package which helps in showing the alert message when the file is uploaded on the node server.

npm install ngx-toastr --save

The ngx-toastr NPM module requires @angular/animations dependency:

npm install @angular/animations --save

Then, add the ngx-toastr CSS in angular.json file:

"styles": [
    "src/styles.css",
    "node_modules/ngx-toastr/toastr.css"
]

Import BrowserAnimationsModule and ToastrModule in app.module.ts file:

import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
import { ToastrModule } from 'ngx-toastr';
 
@NgModule({
  imports: [
    CommonModule,
    BrowserAnimationsModule, // required animations module
    ToastrModule.forRoot() // ToastrModule added
  ]
})

export class AppModule { }

Install & Configure ng-file-upload Directive

In this step, we’ll Install and configure ng-file-upload library in Angular 8 app. Run command to install ng-file-upload library.

npm install ng2-file-upload

Once the ng2-file-upload directive is installed, then import the FileSelectDirective and FormsModule in app.module.ts. We need FormsModule service so that we can create the file uploading component in Angular.

import { FileSelectDirective } from 'ng2-file-upload';
import { FormsModule } from '@angular/forms';

@NgModule({
  declarations: [
    FileSelectDirective
  ],
  imports: [
    FormsModule
  ]
})

export class AppModule { }

Setting Up Node Backend for File Upload Demo

To upload the file on the server, we need to set up a separate backend. In this tutorial, we will be using Node & Express js to create server locally along with multer, express js, body-parser, and dotenv libraries.

Run command to create backend folder in Angular app’s root directory:

mkdir backend && cd backend

In the next step, create a specific package.json file.

npm init

Run command to install required dependencies:

npm install express cors body-parser multer dotenv --save

In order to get rid from starting the server again and again, install nodemon NPM package. Use –-save-dev along with the npm command to register in the devDependencies array. It will make it available for development purpose only.

npm install nodemon --save-dev

Have a look at final pacakge.json file for file upload demo backend:

{
  "name": "angular-node-file-upload",
  "version": "1.0.0",
  "description": "Angualr 8 file upload demo app",
  "main": "server.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "node server.js"
  },
  "author": "Digamber Rawat",
  "license": "ISC",
  "dependencies": {
    "body-parser": "^1.19.0",
    "cors": "^2.8.5",
    "dotenv": "^8.0.0",
    "express": "^4.17.1",
    "multer": "^1.4.1"
  },
  "devDependencies": {
    "nodemon": "^1.19.1"
  }
}

Create a file by the name of server.js inside backend folder:

Configure Server.js

To configure our backend we need to create a server.js file. In this file we’ll keep our backend server’s settings.

touch server.js

Now, paste the following code in backend > server.js file:

const express = require('express'),
  path = require('path'),
  cors = require('cors'),
  multer = require('multer'),
  bodyParser = require('body-parser');

// File upload settings  
const PATH = './uploads';

let storage = multer.diskStorage({
  destination: (req, file, cb) => {
    cb(null, PATH);
  },
  filename: (req, file, cb) => {
    cb(null, file.fieldname + '-' + Date.now())
  }
});

let upload = multer({
  storage: storage
});

// Express settings
const app = express();
app.use(cors());
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({
  extended: false
}));

app.get('/api', function (req, res) {
  res.end('File catcher');
});

// POST File
app.post('/api/upload', upload.single('image'), function (req, res) {
  if (!req.file) {
    console.log("No file is available!");
    return res.send({
      success: false
    });

  } else {
    console.log('File is available!');
    return res.send({
      success: true
    })
  }
});

// Create PORT
const PORT = process.env.PORT || 8080;
const server = app.listen(PORT, () => {
  console.log('Connected to port ' + PORT)
})

// Find 404 and hand over to error handler
app.use((req, res, next) => {
  next(createError(404));
});

// error handler
app.use(function (err, req, res, next) {
  console.error(err.message);
  if (!err.statusCode) err.statusCode = 500;
  res.status(err.statusCode).send(err.message);
});

Now, while staying in the backend folder run the below command to start the backend server:

nodemon server.js

If everything goes fine then you’ll get the following output:

[nodemon] 1.19.1
[nodemon] to restart at any time, enter `rs`
[nodemon] watching: *.*
[nodemon] starting `node server.js`
Connected to port 8080

Create Angular 8 File Upload Component

In this last step, we are going to create a file upload component in Angular 8 app using Express js API.

Get into the app.component.ts file and include the following code:

import { Component, OnInit } from '@angular/core';
import { FileUploader } from 'ng2-file-upload/ng2-file-upload';
import { ToastrService } from 'ngx-toastr';

const URL = 'http://localhost:8080/api/upload';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})

export class AppComponent implements OnInit {
  public uploader: FileUploader = new FileUploader({
    url: URL,
    itemAlias: 'image'
  });

  constructor(private toastr: ToastrService) { }

  ngOnInit() {
    this.uploader.onAfterAddingFile = (file) => {
      file.withCredentials = false;
    };
    this.uploader.onCompleteItem = (item: any, status: any) => {
      console.log('Uploaded File Details:', item);
      this.toastr.success('File successfully uploaded!');
    };
  }

}

Go to app.component.html file and add the given below code:

<div class="wrapper">
  <h2>Angular Image Upload Demo</h2>

  <div class="file-upload">
    <input type="file" name="image" ng2FileSelect [uploader]="uploader" accept="image/x-png,image/gif,image/jpeg" />
    <button type="button" (click)="uploader.uploadAll()" [disabled]="!uploader.getNotUploadedItems().length">
      Upload
    </button>
  </div>

</div>

Now, It’s time to start the Angular 8 app to check out the File upload demo in the browser. Run the following command:

ng serve --open

Make sure your NODE server must be running to manage the backend.

When you upload the image from front-end you’ll see your image files are saving inside the backend > uploads folder.

Conclusion

In this Angular 8 tutorial, we barely scratched the surface related to file uploading in a Node application. There are various other methods available on the internet through which you can achieve file uploading task quickly. However, this tutorial is suitable for beginners developers. I hope this tutorial will surely help and you if you liked this tutorial, please consider sharing it with others.

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