How to Embed and Display PDF Files in Angular

The Portable Document Format (PDF) is a file format developed by Adobe in the 1990s to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems.

In this tutorial, we’ll learn how to embed and display PDF files in Angular by creating a simple example application using the latest Angular 10 version.

1 : Installing Angular CLI 10

In this step, we’ll install the latest Angular CLI 10 version (at the time of writing this tutorial).

Angular CLI is the official tool for initializing and working with Angular projects. To install it, open a new command-line interface and run the following command:

$ npm install -g @angular/cli

At the time of writing this tutorial, angular/cli v10 will be installed on your system.

2 : Creating a New Angular 10 App

Let’s now create our project. Head back to your command-line interface and run the following commands:

$ cd ~
$ ng new angular10pdf

The CLI will ask you a couple of questions — If Would you like to add Angular routing? Type y for Yes and Which stylesheet format would you like to use? Choose CSS.

Next, navigate to you project’s folder and run the local development server using the following commands:

$ cd angular10pdf
$ ng serve

Open your web browser and navigate to the http://localhost:4200/ address to see your app running.

Next, open a new terminal and make sure to navigate to your project’s folder and run the following command to install the ng2-pdf-viewer library from npm using the following command:

$ npm install ng2-pdf-viewer

Next open the src/app/app.module.ts file, and import PdfViewerModule from ng2-pdf-viewer in your module as follows:

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import  {  PdfViewerModule  }  from  'ng2-pdf-viewer';
import { FormsModule } from '@angular/forms';
import { AppComponent } from './app.component';
@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    FormsModule,
    PdfViewerModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

Once the library has been imported, you can use the ng2-pdf-viewer component in your Angular application.

note that we have also imported FormsModule.

Next, open the src/app/app.component.ts file and update it as follows:

import { Component } from '@angular/core';
@Component({
  selector: 'my-app',
  templateUrl: './app.component.html',
  styleUrls: [ './app.component.css' ]
})
export class AppComponent  {
    pdfSource =  "https://vadimdez.github.io/ng2-pdf-viewer/assets/pdf-test.pdf";
}

Next, open the src/app/app.component.html file and add the following code:

<h1> Angular 10 PDF Viewer</h1>
<div class="container">
  <pdf-viewer [src]="pdfSource"
              [original-size]="false"
  ></pdf-viewer>
</div>

Next, add a textarea for entering the value that you want to encode:

<h1> Angular 10 PDF Viewer</h1>
<div class="container">
  <textarea [(ngModel)] = "pdfSource"></textarea>
  <pdf-viewer [src]="pdfSource"
              [original-size]="false"
  ></pdf-viewer>
</div>

Finally open the src/styles.css file and add the following styles:

pdf-viewer {
  display: flex;
  align-items: center;
  justify-content: center;
  filter: drop-shadow(5px 5px 5px #222222);
}
textarea {
    margin-top: 15px; 
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 100%;
}

That’s it we have finished our Angular 10 example that show you how to view PDF files in your Angular apps. 

If you need a full-blown PDF viewer in your Angular 10 app you can use ngx-extended-pdf-viewer instead which comes with thumbnails, searching, printing, various selection tools, etc.

You first need to add the following configuration object in the angular.json file:

"assets": [
    "src/favicon.ico",
    "src/assets",
    {
      "glob": "**/*",
      "input": "node_modules/ngx-extended-pdf-viewer/assets/",
      "output": "/assets/"
    }
  ],
  "scripts": []

After updating the angular.json file, you need to run the npm install ngx-extended-pdf-viewer --save command, add the NgxExtendedPdfViewerModule to the imports array of your module file, and embed the viewer tag as follows:

<ngx-extended-pdf-viewer
     src="URL.pdf"
     useBrowserLocale="true">
</ngx-extended-pdf-viewer>

We’ve seen by example how to embed and display PDF files in your Angular 10 app.

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Angular Material 12 File Upload Example with Progress Bar

In this tutorial, I will show you way to build an Angular Material 12 File upload to Rest API example using HttpClient, FormData and Progress Bar.

More Practice:

–  Angular Material 12 Image upload with Preview example

–  Angular 12 + Spring Boot: File upload example

–  Angular 12 + Node.js: File Upload example

–  Angular 12 Login and Registration example with JWT & Web Api

–  Angular 12 CRUD Application example with Web API

–  Angular 12 Form Validation example (Reactive Forms)

– Bootstrap instead:  Angular 12 File upload example with progress bar & Bootstrap

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Install Angular - Angular Environment Setup Process

Angular is a TypeScript based framework that works in synchronization with HTML, CSS, and JavaScript. To work with angular, domain knowledge of these 3 is required.

1. Installing Node.js and npm
2. Installing Angular CLI
3. Creating workspace
4. Deploying your First App

In this article, you will get to know about the Angular Environment setup process. After reading this article, you will be able to install, setup, create, and launch your own application in Angular. So let’s start!!!

Install Angular in Easy Steps

For Installing Angular on your Machine, there are 2 prerequisites:

• Node.js
• npm Package Manager

Node.js

First you need to have Node.js installed as Angular require current, active LTS or maintenance LTS version of Node.js

Download and Install Node.js version suitable for your machine’s operating system.

Npm Package Manager

Angular, Angular CLI and Angular applications are dependent on npm packages. By installing Node.js, you have automatically installed the npm Package manager which will be the base for installing angular in your system. To check the presence of npm client and Angular version check of npm client, run this command:

1. npm -v

Installing Angular CLI

• Open Terminal/Command Prompt
• To install Angular CLI, run the below command:

1. npm install -g @angular/cli

· After executing the command, Angular CLI will get installed within some time. You can check it using the following command

1. ng --version

Workspace Creation

Now as your Angular CLI is installed, you need to create a workspace to work upon your application. Methods for it are:

• Using CLI
• Using Visual Studio Code

1. Using CLI

To create a workspace:

• Navigate to the desired directory where you want to create your workspace using cd command in the Terminal/Command prompt
• Then in the directory write this command on your terminal and provide the name of the app which you want to create. In my case I have mentioned DataFlair:

1. Ng new YourAppName

• After running this command, it will prompt you to select from various options about the CSS and other functionalities.

• To leave everything to default, simply press the Enter or the Return key.

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Introduction to Structured Query Language SQL pdf

SQL stands for Structured Query Language. SQL is a scripting language expected to store, control, and inquiry information put away in social databases. The main manifestation of SQL showed up in 1974, when a gathering in IBM built up the principal model of a social database. The primary business social database was discharged by Relational Software later turning out to be Oracle.

Models for SQL exist. In any case, the SQL that can be utilized on every last one of the major RDBMS today is in various flavors. This is because of two reasons:

1. The SQL order standard is genuinely intricate, and it isn’t handy to actualize the whole standard.

2. Every database seller needs an approach to separate its item from others.

Right now, contrasts are noted where fitting.

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Angular Material 12 Image Upload with Preview Example

In this tutorial, I will show you way to build (Multiple) Image upload and Preview example with Web API/Rest API using Angular Material 12, FormData and Progress Bar.

More Practice:

–  Angular 12 + Spring Boot: File upload example

–  Angular 12 + Node.js: File Upload example

–  Angular 12 Login and Registration example with JWT & Web Api

–  Angular 12 CRUD Application example with Web API

–  Angular 12 Form Validation example (Reactive Forms)

– Using Bootstrap:  Angular 12 Multiple Images Upload with Preview example

Serverless with Firebase:

Angular 12 Upload File to Firebase Storage example

Contents [ hide ]

• Overview
• Technology
• Web API for Image Upload & Storage
• Setup Angular Material 12 Image Upload Preview Project
• Angular Material 12 App for Image upload with Preview
• Install Angular Material
• Set up App Module
• Create Angular Service for Upload Files
• Create Angular Material 12 Component for Upload Images
• Add Upload Multiple Images Component to App Component
• Run the App
• Further Reading
• Conclusion

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Basics of Angular: Part-1

What is Angular? What it does? How we implement it in a project? So, here are some basics of angular to let you learn more about angular.

Angular is a Typescript-based open-source front-end web application platform. The Angular Team at Google and a community of individuals and corporations lead it. Angular lets you extend HTML’s syntax to express your apps’ components clearly. The angular resolves challenges while developing a single page and cross-platform applications. So, here the meaning of the single-page applications in angular is that the index.html file serves the app. And, the index.html file links other files to it.

We build angular applications with basic concepts which are NgModules. It provides a compilation context for components. At the beginning of an angular project, the command-line interface provides a built-in component which is the root component. But, NgModule can add a number of additional components. These can be created through a template or loaded from a router. This is what a compilation context about.

What is a Component in Angular?

Components are key features in Angular. It controls a patch of the screen called a view. A couple of components that we create on our own helps to build a whole application. In the end, the root component or the app component holds our entire application. The component has its business logic that it does to support the view inside the class. The class interacts with the view through an API of properties and methods. All the components added by us in the application are not linked to the index.html. But, they link to the app.component.html through the selectors. A component can be a component and not only a typescript class by adding a decorator @Component. Then, for further access, a class can import it. The decorator contains some metadata like selector, template, and style. Here’s an example of how a component decorator looks like:

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

Role of App Module

Modules are the package of functionalities of our app. It gives Angular the information about which features does my app has and what feature it uses. It is an empty Typescript class, but we transform it by adding a decorator @NgModule. So, we have four properties that we set up on the object pass to @NgModule. The four properties are declarations, imports, providers, and bootstrap. All the built-in new components add up to the declarations array in @NgModule.

@NgModule({
declarations: [
  AppComponent,
],
imports: [
  BrowserModule,
  HttpClientModule,
  AppRoutingModule,
  FormsModule
],
bootstrap: [AppComponent]
})

What is Data Binding?

Data Binding is the communication between the Typescript code of the component and the template. So, we have different kinds of data binding given below:

• When there is a requirement to output data from our Typescript code in the HTML template. String interpolation handles this purpose like {{data}} in HTML file. Property Binding is also used for this purpose like [property] = “data”.
• When we want to trigger any event like clicking a button. Event Binding works while we react to user events like (event) = “expression”.
• When we can react to user events and output something at the same time. Two-way Binding is used like [(ngModel)] = “data”.

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