{"id":9293,"date":"2021-12-21T19:42:32","date_gmt":"2021-12-21T16:42:32","guid":{"rendered":"https:\/\/flatlogic.com\/blog\/?p=9293"},"modified":"2024-02-26T21:30:59","modified_gmt":"2024-02-26T18:30:59","slug":"how-to-create-angular-app-step-by-step","status":"publish","type":"post","link":"https:\/\/flatlogic.com\/blog\/how-to-create-angular-app-step-by-step\/","title":{"rendered":"How to Create an Angular Application Step by Step [Guide 2024]"},"content":{"rendered":"<p>Are you asking yourself questions like What is <a  data-ilj-link-preview=\"true\"  data-featured-image=\"https:\/\/flatlogic.com\/blog\/wp-content\/uploads\/2020\/02\/Frame-9-600x450.png\"  data-excerpt=\"The battle between React and Angular has lasted for 7 years. It got its second wind in 2016 when Angular 2 was released. Today we have already worked with Angular 8, but the first significant shift occurred exactly in 2016 (six years after the release of the first Angular). React&nbsp;is an open-sourced JavaScript&nbsp;library&nbsp;for building a&hellip;\" href=\"https:\/\/flatlogic.com\/blog\/angular-vs-react-which-one-to-choose-for-your-web-app\/\">Angular<\/a>? How do I build an Angular application? What tools do I need to get started? If so, you&#8217;ve come to the right place. As Henry Ford once said, <strong><em>&#8220;Coming together is a beginning. Keeping together is progress. Working together is a success.&#8221;<\/em><\/strong> This guide will help you create your first Angular application and get you one step closer to success. <\/p><p>Embarking on the creation of an Angular application is a strategic move in the realm of <a href=\"https:\/\/flatlogic.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">business software<\/a>, offering a pathway to developing dynamic, interactive, and single-page applications that are both scalable and user-friendly. Angular&#8217;s popularity is rooted in its straightforward approach to application development, ensuring that with the correct expertise, developers can efficiently build and manage sophisticated web applications tailored to the evolving needs of the business environment.<\/p><p>By reading this guide, you will have a better understanding of Angular and the tools needed to create an Angular application. You will also have the knowledge and skills to create and maintain your Angular application. So, whether you are just getting started or are a seasoned professional, this guide is here to help you create your first Angular application.<\/p><p><iframe data-src=\"https:\/\/www.slideshare.net\/slideshow\/embed_code\/key\/5AD2Gs4nZ6QZ6D?startSlide=1\" width=\"594\" height=\"397\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" style=\"border:0px solid #CCC; border-width:0px; margin-bottom:0px;max-width: 100%;\" allowfullscreen=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" data-load-mode=\"1\"><\/iframe><\/p><p><\/p><h2 class=\"wp-block-heading\">Things to Know about Angular<\/h2><p>Angular is a <a href=\"https:\/\/www.typescriptlang.org\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">TypeScript-based open-source framework<\/a>, whose main purpose is developing <strong>web applications <\/strong>within the <a href=\"https:\/\/flatlogic.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">business software<\/a> sphere. But where Angular shines is the creation of client applications and it is regarded as one of the best tools when it comes to single-page app development as well.<\/p><p>The angular community consists of more than 18 million users and that number is simply impressive.<\/p><p>A big part of this is played by the tools and setup that Angular possesses: RxJS, Angular CLI, and different <a  data-ilj-link-preview=\"true\"  data-featured-image=\"https:\/\/flatlogic.com\/blog\/wp-content\/uploads\/2020\/01\/alnafgjksgn-600x450.jpg\"  data-excerpt=\"Mobile app development is an all-time beneficial investment for companies and, according to Clutch, about 42% of businesses have a mobile app. They help connect the business to its consumers, promote brand recognition and loyalty, promote impulse spending, and generally raise profits.&nbsp; However, not just any app that\u2019s hastily thrown together will rake in these&hellip;\" href=\"https:\/\/flatlogic.com\/blog\/top-8-code-editors-for-mobile-application-development\/\">code editors<\/a> that support the framework.<\/p><p>RxJS is a <a href=\"https:\/\/flatlogic.com\/templates\/one-react-template\" target=\"_blank\" rel=\"noreferrer noopener\">reactive programming<\/a> library that is pretty crucial when it comes to working with Angular. RxJS&#8217; main aim is to handle asynchronous data with multiple events and by doing that this <a href=\"https:\/\/flatlogic.com\/services\/reactjs-development\" target=\"_blank\" rel=\"noreferrer noopener\">reactive programming<\/a> library allows engineers to build multiple channels of data exchange to ease the consumption of resources. So, RxJS is similar to a conveyor for JavaScript codes, as it allows parallel and continuing execution of events in a manner, independent from one another, and without waiting for one event to happen to complete another. And although RxJS&#8217; learning curve might seem a bit high, it is worth every penny. <a href=\"https:\/\/flatlogic.com\/generator\"><img decoding=\"async\" data-src=\"https:\/\/flatlogic.com\/blog\/wp-content\/uploads\/2025\/10\/Introducing-professional-vibe-coding.png\" alt=\"Professional Vibe Coding\" class=\"banner-img lazyload\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 2560px; --smush-placeholder-aspect-ratio: 2560\/640;\" data-srcset=\"https:\/\/flatlogic.com\/blog\/wp-content\/uploads\/2025\/10\/Introducing-professional-vibe-coding.png 2560w, https:\/\/flatlogic.com\/blog\/wp-content\/uploads\/2025\/10\/Introducing-professional-vibe-coding-600x150.png 600w, https:\/\/flatlogic.com\/blog\/wp-content\/uploads\/2025\/10\/Introducing-professional-vibe-coding-1024x256.png 1024w, https:\/\/flatlogic.com\/blog\/wp-content\/uploads\/2025\/10\/Introducing-professional-vibe-coding-768x192.png 768w, https:\/\/flatlogic.com\/blog\/wp-content\/uploads\/2025\/10\/Introducing-professional-vibe-coding-1536x384.png 1536w, https:\/\/flatlogic.com\/blog\/wp-content\/uploads\/2025\/10\/Introducing-professional-vibe-coding-2048x512.png 2048w\" data-sizes=\"auto\" data-original-sizes=\"(max-width: 2560px) 100vw, 2560px\"> <\/a><\/p><p>The second great tool in Angular&#8217;s arsenal is the Angular command-line interface (or just CLI for short). Favored by many an engineer, Angular CLI is easy to set up, quite understandable even for newcomers, is packed to the brim with different testing tools right out of the box and its commands can be described as nothing but simple.<\/p><h2 class=\"wp-block-heading\">Angular Pros<\/h2><p>1. &nbsp; &nbsp; Angular architecture is component-based and its primary architectural characteristic is the basis of components hierarchy. This fact allows developers to achieve a higher code quality by making the overall code more accessible and understandable by encapsulating all of the components with their functionality.&nbsp;<\/p><p>2. All Angular components are reusable. This advantage is a direct outcome of the previous one because the previously mentioned encapsulation of components makes them exceptionally self-sufficient. It also allows developers to reuse them in different parts of their applications, making the process of development a bit faster and more convenient. <\/p><p>3. Angular&#8217;s readability is off the charts. Once again due to the component-based architecture and the encapsulation. Thus, new developers, albeit new to the whole app developing a game or just new to the project, can read code in a better way and reach their plateau of productivity quickly.<\/p><p>4. Angular is unit-test friendly. Try and guess why it is so. Right, you are, all because of the component-based structure that simplifies the <a href=\"https:\/\/www.avenga.com\/our-expertise\/quality-assurance-and-testing-services\/\">quality assurance procedures <\/a>even when it comes to the smallest parts of the app, which are, of course, units. <\/p><p>5. &nbsp; &nbsp; Angular is maintainable. It is quite easy to maintain and update the code.<\/p><p>6. Angular uses <a href=\"https:\/\/flatlogic.com\/blog\/typescript-vs-javascript-the-key-differences-you-should-know-in-2020\/\">TypeScript<\/a>. Let us get a little misconception out of the way first &#8211; it is not mandatory to use TypeScript with Angular, as it provides devs with options on how to use their libraries more efficiently, including Redux and Flux. But why use them if you can use TypeScript, which can be described as a superset for JavaScript? Yes, it has its fair share of things to nitpick, and yes, you have to learn another language if you never worked with TypeScript, but its overall usefulness is immense. Especially if you work on an enterprise-level project, as TypeScript simply has better navigation, autocompletion, and refactoring services and it helps you to spot and get rid of common mistakes while you type in the code. All in all, TypeScript is great, and Angular is only better because of it.<\/p><p>7. &nbsp; &nbsp; Angular has Long-Term Google Support. Also known simply as LTS, Google&#8217;s Long-Term Support means that Google is planning to stick with and further develop the Angular ecosystem.<\/p><h2 class=\"wp-block-heading\">Angular Cons<\/h2><p>The main disadvantage of Angular is the fact that Angular is complex. Although the component-based architecture Angular possesses is great, how components are managed is not, as every component in your app will, most likely, need dependency injections and all of them will need lifecycle interfaces. And that&#8217;s not mentioning the fact that you will have to rely on third-party libraries that are quite specific when it comes to Angular. Thus, <a href=\"https:\/\/flatlogic.com\/services\/angular-development\">developing apps on Angular<\/a> can be (bear in mind that it is a possibility and not an axiom) pretty repetitive and tiresome.<\/p><p>The second disadvantage worth mentioning mainly concerns new and up-and-coming developers and it is the fact that Angular&#8217;s learning curve is steep. As we have already mentioned, if you were to learn Angular from scratch, you would also need to learn TypeScript, modules, dependency injection, components, services, templates, RxJS management, etc.<\/p><p>Summing up, even though it can be fearsome for new developers and at times complicated for new and professional developers alike, Angular is a great tool for a variety of <strong><a href='https:\/\/flatlogic.com\/services\/web-development'>web app development<\/a><\/strong> needs and, with Google&#8217;s Long-Term Support, its future in the industry looks as bright as ever. That being said, let&#8217;s get to the metaphorical cherry on top of the cake of today&#8217;s article &#8211; an example of step-by-step Angular app development.&nbsp;<\/p><h2 class=\"wp-block-heading\">Step-by-step Angular App Creation<\/h2><ol class=\"wp-block-list\"><li> Install Angular CLI 8;<\/li><\/ol><p>2. Proceed with Angular 8 Project creation;<\/p><p>3. Add Angular HttpClient;<\/p><p>4. Create UI Component;<\/p><p>5. Routing addition;<\/p><p>6. Build UI with Angular Material Components;<\/p><p>7. Set up a REST API mocking;<\/p><p>8. Use Angular HttpClient to consume the REST API;<\/p><p>9. HTTP Errors Handling is step number nine;<\/p><p>10. Pagination Addition;<\/p><p>11. Angular Application Firebase building and deployment.<\/p><h3 class=\"wp-block-heading\"><strong>1.<\/strong> <strong>Angular CLI 8 installation<\/strong><\/h3><p>The first thing we will have to do to create an Angular App is to get our Angular CLI up to speed. That step is crucial, as Angular CLI is the official tool for Angular projects&#8217; initializing and working. Write the following line of code into a new terminal that we have just created:<\/p><pre class=\"wp-block-code\"><code>npm install -g @angular\/cli<\/code><\/pre><h3 class=\"wp-block-heading\">2. <strong>Angular 8 Project creation<\/strong><\/h3><p>Now we can initialize our Angular project. Use the following commands:<\/p><pre class=\"wp-block-code\"><code>cd ~ <\/code><\/pre><pre class=\"wp-block-code\"><code>ng new angular-example<\/code><\/pre><p>After that, the CLI is going to deliver a prompt to you, which asks you if you would like the Angular routing addition. And that is just too good of an offer to decline. Right after that, the CLI sends you another prompt, which will help you to decide upon a stylesheet format you would like to use. Pick the CSS option here.<\/p><p>The combination of these two decisions will allow Angular to generate the files and folders required and establish the needed packages from npm. But that&#8217;s not all, as it will also set up the routing we mentioned earlier automatically.<\/p><p>After that, we need to proceed to the root folder and run the local development server using these commands:<\/p><pre class=\"wp-block-code\"><code>cd angular-example <\/code><\/pre><pre class=\"wp-block-code\"><code>ng serve<\/code><\/pre><p>That will make our application available at the following address:<\/p><pre class=\"wp-block-code\"><code>&#91;http:\/\/localhost:4200\/](http:\/\/localhost:4200\/)<\/code><\/pre><p>What we need to do is to go to this address using a web browsing of our choosing and see a beautiful, yet utterly incomplete page like this:<\/p><figure class=\"wp-block-gallery columns-1 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><img decoding=\"async\" width=\"710\" height=\"341\" data-src=\"https:\/\/flatlogic.com\/blog\/wp-content\/uploads\/2021\/12\/s_F52E295BB9C92BEFE7506DFCE2086C2583C762072AFE2CA1A9CE9AD4DA9FF751_1567465432228_Angulardemo.jpg\" alt=\"\" data-id=\"9311\" data-full-url=\"https:\/\/flatlogic.com\/blog\/wp-content\/uploads\/2021\/12\/s_F52E295BB9C92BEFE7506DFCE2086C2583C762072AFE2CA1A9CE9AD4DA9FF751_1567465432228_Angulardemo.jpg\" data-link=\"https:\/\/flatlogic.com\/blog\/?attachment_id=9311\" class=\"wp-image-9311 lazyload\" data-srcset=\"https:\/\/flatlogic.com\/blog\/wp-content\/uploads\/2021\/12\/s_F52E295BB9C92BEFE7506DFCE2086C2583C762072AFE2CA1A9CE9AD4DA9FF751_1567465432228_Angulardemo.jpg 710w, https:\/\/flatlogic.com\/blog\/wp-content\/uploads\/2021\/12\/s_F52E295BB9C92BEFE7506DFCE2086C2583C762072AFE2CA1A9CE9AD4DA9FF751_1567465432228_Angulardemo-600x288.jpg 600w\" data-sizes=\"auto\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 710px; --smush-placeholder-aspect-ratio: 710\/341;\" data-original-sizes=\"(max-width: 710px) 100vw, 710px\" \/><\/figure><\/li><\/ul><\/figure><h3 class=\"wp-block-heading\"><strong>3.<\/strong> <strong>Addition of Angular HttpClient<\/strong><\/h3><p>This step is pretty easy in execution despite being command-heavy at first sight. So, to finish the simple act of the HttpClientModule importing and its incorporation into the import array, thus assuring the REST API consumption by the HttpClient, we will have to go to the file named <strong>src\/app\/app.module.ts<\/strong> to change the following: <\/p><pre class=\"wp-block-code\"><code>import { BrowserModule } from '@angular\/platform-browser';import { NgModule } from '@angular\/core';import { AppRoutingModule } from '.\/app-routing.module';import { AppComponent } from '.\/app.component';import { HttpClientModule } from '@angular\/common\/http';@NgModule({declarations: &#91;AppComponent,],imports: &#91;BrowserModule,AppRoutingModule,HttpClientModule],providers: &#91;],bootstrap: &#91;AppComponent]})export class AppModule { }<\/code><\/pre><h3 class=\"wp-block-heading\"><strong>4.<\/strong> <strong>UI Component Creation<\/strong><\/h3><p>As we have already mentioned, Angular Apps are made up of components. So, to do it, we open yet another new terminal and use the following line of coding:<\/p><pre class=\"wp-block-code\"><code>cd ~\/angular-example <\/code><\/pre><pre class=\"wp-block-code\"><code>ng g component home<\/code><\/pre><p>Running these commands will display the following output in our terminal:<\/p><pre class=\"wp-block-code\"><code>CREATE src\/app\/home\/home.component.html (19 bytes) CREATE src\/app\/home\/home.component.spec.ts (614 bytes) CREATE src\/app\/home\/home.component.ts (261 bytes) CREATE src\/app\/home\/home.component.css (0 bytes) UPDATE src\/app\/app.module.ts (467 bytes)<\/code><\/pre><p>And that leads us to the creation of the <em>About <\/em>component by running the following command:<\/p><pre class=\"wp-block-code\"><code> ng g component about<\/code><\/pre><p>And that leads us to the <em>src\/app\/about\/about.component.html<\/em> file and add the following:<\/p><pre class=\"wp-block-code\"><code>&lt;p style=\"padding: 15px;\"&gt; This is the about page that describes your app&lt;\/p&gt;<\/code><\/pre><p>Voila! We have just created a component, aren&#8217;t we just great? Now we can get to step number 5.<\/p><h3 class=\"wp-block-heading\"><strong>5.<\/strong> <strong>Routing Addition<\/strong><\/h3><p>Once again, a codding-heavy step, but a crucial one at that, as this step will establish the redirection of the empty path to the home component. This, in order, will constitute the first-time users&#8217; automatic redirection to the home page.<\/p><p>So, what we do here is run the following set of routes into our <strong>src\/app\/app-routing.module.ts<\/strong> file:<\/p><pre class=\"wp-block-code\"><code>import { NgModule } from '@angular\/core';import { Routes, RouterModule } from '@angular\/router';import { HomeComponent } from '.\/home\/home.component';import { AboutComponent } from '.\/about\/about.component';const routes: Routes = &#91;{ path: '', redirectTo: 'home', pathMatch: 'full'},{ path: 'home', component: HomeComponent },{ path: 'about', component: AboutComponent },];@NgModule({imports: &#91;RouterModule.forRoot(routes)],exports: &#91;RouterModule]})export class AppRoutingModule { }<\/code><\/pre><h3 class=\"wp-block-heading\"><strong>6.<\/strong> <strong>UI Building with the help of Angular Material Components<\/strong><\/h3><p>Let&#8217;s start by going to the root file of our project and adding the following line of coding:<\/p><pre class=\"wp-block-code\"><code>ng add @angular\/material<\/code><\/pre><p>After that, Angular will suggest you choose a theme for the project. And, as we feel playful, let&#8217;s choose the Indigo\/Pink option. That will not be the end of it and the prompt will also ask us whether we would like to set up HammerJS for gesture recognition, as well as browser animations for Angular Material. Here we are going to simply press Enter and be on our merry way, as after that we will need to open the <em>src\/app\/app.module.ts<\/em> file and add the following imports:<\/p><pre class=\"wp-block-code\"><code>import { MatToolbarModule<\/code><\/pre><pre class=\"wp-block-code\"><code>MatIconModule<\/code><\/pre><pre class=\"wp-block-code\"><code>MatCardModule<\/code><\/pre><pre class=\"wp-block-code\"><code>MatButtonModule<\/code><\/pre><pre class=\"wp-block-code\"><code>MatProgressSpinnerModule } from '@angular\/material';<\/code><\/pre><p>What we are doing by this is importing the modules for the following Material Design components:<\/p><p>1. MatToolbar &#8211; for headers, titles, or actions containers;<\/p><p>2. MatCard &#8211; to provide a content container for text, photos, and actions in the context of a single subject;<\/p><p>3. MatButton &#8211; for a native <em>&lt;button&gt;<\/em> or <em>&lt;a&gt;<\/em> element that is enhanced with styling and ink ripples of Material Design;<\/p><p>4. MatProgressSpinner &#8211; to provide a progress and activity circular indicator.<\/p><p>After the modules are imported, we can add those modules to the <em>import<\/em> array by running the following lines of code:<\/p><pre class=\"wp-block-code\"><code>@NgModule({declarations: &#91;AppComponent,HomeComponent,AboutComponent],imports: &#91;BrowserModule,AppRoutingModule,HttpClientModule,BrowserAnimationsModule,MatToolbarModule,MatIconModule,MatButtonModule,MatCardModule,MatProgressSpinnerModule],providers: &#91;],bootstrap: &#91;AppComponent]})export class AppModule { }<\/code><\/pre><p>Now, we are going to open the <em>src\/app\/app.component.html<\/em> file and update it with the following code lines:<\/p><pre class=\"wp-block-code\"><code>&lt;mat-toolbar color=\"primary\"&gt; &lt;h1&gt; My Angular Store &lt;\/h1&gt; &lt;button mat-button routerLink=\"\/\"&gt;Home&lt;\/button&gt; &lt;button mat-button routerLink=\"\/about\"&gt;About&lt;\/button&gt;&lt;\/mat-toolbar&gt;&lt;router-outlet&gt;&lt;\/router-outlet&gt;<\/code><\/pre><p>This way we have added a top navigation bar with two buttons that can take our app user to the Home and About pages of our project.<\/p><h3 class=\"wp-block-heading\"><strong>7.<\/strong> <strong>Mocking a REST API<\/strong><\/h3><p>This step is packed with different small substeps we will have to undertake. But fear not, as they all are simple and you won&#8217;t spend a lot of time completing them, although you will have to be pretty precise about your actions.<\/p><p>To begin this step we will be proceeding to a new CLI and introducing json-server from the npm to the project. We do this with the help of the following command:<\/p><pre class=\"wp-block-code\"><code>cd ~\/angular-example<\/code><\/pre><pre class=\"wp-block-code\"><code>npm install --save json-server<\/code><\/pre><p>And now we need to create a <em>server<\/em> folder in our Angular project&#8217;s root folder by writing these lines:<\/p><pre class=\"wp-block-code\"><code>mkdir server<\/code><\/pre><pre class=\"wp-block-code\"><code>cd server<\/code><\/pre><p>Don&#8217;t leave the <em>server <\/em>folder just yet, as we still need to create a <em>database.json<\/em> file and add the following JSON object that will act as a database for our REST API server:<\/p><pre class=\"wp-block-code\"><code>{<\/code><\/pre><pre class=\"wp-block-code\"><code>\"products\": &#91;]<\/code><\/pre><pre class=\"wp-block-code\"><code>}<\/code><\/pre><p>Now we need to go back to the command line and navigate back from the <em>server<\/em> folder to install <em>Faker.js <\/em>from our <em>npm <\/em>by the following command:<\/p><pre class=\"wp-block-code\"><code>cd ..<\/code><\/pre><pre class=\"wp-block-code\"><code>npm install faker -save<\/code><\/pre><p>Create the <em>generate.js<\/em> file with the following coding lines:<\/p><pre class=\"wp-block-code\"><code>var faker = require('faker');var database = { products: &#91;]};for (var i = 1; i&lt;= 300; i++) {database.products.push({id: i,name: faker.commerce.productName(),description: faker.lorem.sentences(),price: faker.commerce.price(),imageUrl: \"https:\/\/source.unsplash.com\/1600x900\/?product\",quantity: faker.random.number()});}console.log(JSON.stringify(database));<\/code><\/pre><p>After that, add the <em>generate<\/em> and <em>server <\/em>scripts we have created into the <em>package.json<\/em> file by including the following lines in our code:<\/p><pre class=\"wp-block-code\"><code>\"scripts\": {\"ng\": \"ng\",\"start\": \"ng serve\",\"build\": \"ng build\",\"test\": \"ng test\",\"lint\": \"ng lint\",\"e2e\": \"ng e2e\",\"generate\": \"node .\/server\/generate.js &gt; .\/server\/database.json\",\"server\": \"json-server --watch .\/server\/database.json\"},<\/code><\/pre><p>Next, we will go back to the command-line interface and run the <em>generated <\/em>script by using the following command:<\/p><pre class=\"wp-block-code\"><code>npm run generate<\/code><\/pre><p>And after that, we are to run our freshly baked REST API by executing the command that goes like this:<\/p><pre class=\"wp-block-code\"><code>npm run server<\/code><\/pre><p>This action will allow us to send HTTP requests with the following API endpoints:<\/p><p>\u00b7 &nbsp; GET \/products&nbsp; for products getting;<\/p><p>\u00b7 &nbsp; GET \/products\/&lt;id&gt;&nbsp; for single product getting by id;<\/p><p>\u00b7 &nbsp; POST \/products&nbsp; for new product creation;<\/p><p>\u00b7 &nbsp; PUT \/products\/&lt;id&gt;&nbsp; for product updating by id;<\/p><p>\u00b7 &nbsp; PATCH \/products\/&lt;id&gt;&nbsp; for partial product updating by id;\u00b7 &nbsp; DELETE \/products\/&lt;id&gt;&nbsp; for product deletion by id.<\/p><h3 class=\"wp-block-heading\"><strong>8.<\/strong> <strong>Consuming the REST API with Angular HttpClient<\/strong><\/h3><p>Now we need to make Angular consume our REST API using HttpClient. We start this process by creating an Angular service that will encapsulate the code, which, in turn, will allow us to consume data from our REST API server. Check our terminal and write in the following command:<\/p><pre class=\"wp-block-code\"><code>ng g service api<\/code><\/pre><p>After that what we need to do is to go to the <em>src\/app\/api.service.ts<\/em> file to import and inject HttpClient. This will be achieved by doing the following actions:<\/p><pre class=\"wp-block-code\"><code>import { Injectable } from '@angular\/core';<\/code><\/pre><pre class=\"wp-block-code\"><code>import { HttpClient } from '@angular\/common\/http';@Injectable({providedIn: 'root'})export class ApiService {private SERVER_URL = \"http:\/\/localhost:3000\";constructor(private httpClient: HttpClient) { }}<\/code><\/pre><p>Now we need to define a <em>get()<\/em> method, which will send GET requests to our REST API endpoints:<\/p><pre class=\"wp-block-code\"><code>import { Injectable } from '@angular\/core'; import { HttpClient } from '@angular\/common\/http';@Injectable({ providedIn: 'root' }) export class ApiService {private SERVER_URL = \"http:\/\/localhost:3000\";constructor(private httpClient: HttpClient) { }public get(){ return this.httpClient.get(this.SERVER_URL); } }<\/code><\/pre><p>At this point, we defined a product&#8217;s variable and called the <em>get()<\/em> method of the service to fetch data from the JSON REST API server. Now what we need to do is open the <em>src\/app\/home\/home.component.html<\/em> file to update it as you will see below:<\/p><pre class=\"wp-block-code\"><code>&lt;div style=\"padding: 13px;\"&gt;&lt;mat-spinner *ngIf=\"products.length === 0\"&gt;&lt;\/mat-spinner&gt;&lt;mat-card *ngFor=\"let product of products\" style=\"margin-top:10px;\"&gt;&lt;mat-card-header&gt;&lt;mat-card-title&gt;{{product.name}}&lt;\/mat-card-title&gt;&lt;mat-card-subtitle&gt;{{product.price}} $\/ {{product.quantity}}&lt;\/mat-card-subtitle&gt;&lt;\/mat-card-header&gt;&lt;mat-card-content&gt;&lt;p&gt;{{product.description}}&lt;\/p&gt;&lt;img style=\"height:100%; width: 100%;\" src=\"{{ product.imageUrl }}\" \/&gt;&lt;\/mat-card-content&gt;&lt;mat-card-actions&gt;&lt;button mat-button&gt; Buy product&lt;\/button&gt;&lt;\/mat-card-actions&gt;&lt;\/mat-card&gt;&lt;\/div&gt;<\/code><\/pre><p>Now we can proceed with step number nine.<\/p><h3 class=\"wp-block-heading\"><strong>9.<\/strong> <strong>HTTP Errors Handling<\/strong><\/h3><p>Go to the src\/app\/api.service.ts file and update this part as follows:<\/p><pre class=\"wp-block-code\"><code>import { Injectable } from '@angular\/core';import { HttpClient, HttpErrorResponse } from \"@angular\/common\/http\";import { throwError } from 'rxjs';import { retry, catchError } from 'rxjs\/operators';@Injectable({providedIn: 'root'})export class ApiService {private SERVER_URL = \"http:\/\/localhost:3000\/products\";constructor(private httpClient: HttpClient) { }handleError(error: HttpErrorResponse) {let errorMessage = 'Unknown error!';if (error.error instanceof ErrorEvent) {\/\/ Client-side errorserrorMessage = `Error: ${error.error.message}`;} else {\/\/ Server-side errorserrorMessage = `Error Code: ${error.status}\\nMessage: ${error.message}`;}window.alert(errorMessage);return throwError(errorMessage);}public sendGetRequest(){return this.httpClient.get(this.SERVER_URL).pipe(catchError(this.handleError));}}<\/code><\/pre><p>And now we will see the errors in our browser console:<\/p><p class=\"has-text-align-center\"><img decoding=\"async\" width=\"442\" height=\"277\" data-src=\"https:\/\/lh5.googleusercontent.com\/D1pUGtq7Q1f2Gmzfn8X_2rfPkykZp1Ry_k9ZEUV9_yTNwig0QYEh44ITjLaN86fSibTPVcyFYbKum7Z--3rp23fRUTJypYUQrPpVMPP_64nd9Es9rqzIXzv6MivER3keBzhNJdAe\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 442px; --smush-placeholder-aspect-ratio: 442\/277;\"><\/p><h3 class=\"wp-block-heading\"><strong>10.<\/strong> <strong>Pagination Addition<\/strong><\/h3><p>What we do in this step is add the data pagination support by using the Link header of the HTTP response, which is going to be received from the REST API server. This means that we will need to instruct <em>HttpClient <\/em>to give us the full HttpResponse, instead of providing us with the response body. Use the <em>observe <\/em>option.<\/p><p>Start by opening the <em>src\/app\/data.service.ts<\/em> file and importing the <em>RxJS&nbsp; tap() <\/em>operator with the following command:<\/p><pre class=\"wp-block-code\"><code> import { retry, catchError, tap } from 'rxjs\/operators';<\/code><\/pre><p>After that, add the following variables:<\/p><p><em>public first: string = &#8220;&#8221;;&nbsp;<\/em><\/p><p><em>public prev: string = &#8220;&#8221;;&nbsp;<\/em><\/p><p><em>public next: string = &#8220;&#8221;;&nbsp;<\/em><\/p><p><em>public last: string = &#8220;&#8221;;<\/em><\/p><p>Now we are set to add the <em>parseLinkHeader()<\/em> method to parse the Link header and populate the variables we have added in the previous substep:<\/p><p><em>parseLinkHeader(header) {<\/em><\/p><p><em>if (header.length == 0) {<\/em><\/p><p><em>return ;<\/em><\/p><p><em>}<\/em><\/p><pre class=\"wp-block-code\"><code>if (header.length == 0) {return ;}let parts = header.split(',');var links = {};parts.forEach( p =&gt; {let section = p.split(';');var url = section&#91;0].replace(\/&lt;(.*)&gt;\/, '$1').trim();var name = section&#91;1].replace(\/rel=\"(.*)\"\/, '$1').trim();links&#91;name] = url;});this.first = links&#91;\"first\"];this.last = links&#91;\"last\"];this.prev = links&#91;\"prev\"];this.next = links&#91;\"next\"];}<\/code><\/pre><p>And that, in turn, allows us to safely update the <em>sendGetRequest() <\/em>with the following lines of coding:<\/p><pre class=\"wp-block-code\"><code>public sendGetRequest(){<\/code><\/pre><pre class=\"wp-block-code\"><code>\/\/ Add safe, URL encoded _page and _limit parametersreturn this.httpClient.get(this.SERVER_URL, { params: new HttpParams({fromString: \"_page=1&amp;_limit=20\"}), observe: \"response\"}).pipe(retry(3), catchError(this.handleError), tap(res =&gt; {console.log(res.headers.get('Link'));this.parseLinkHeader(res.headers.get('Link'));}));}<\/code><\/pre><p>One pulls the other, so we can now update the home component of our app. To do that, open the <em>src\/app\/home\/home.component.ts<\/em> file to import <em>HttpResponse<\/em>:<\/p><pre class=\"wp-block-code\"><code>import { HttpResponse } from '@angular\/common\/http';<\/code><\/pre><p>And now we can update the <em>subscribe() <\/em>method as follows:<\/p><pre class=\"wp-block-code\"><code>ngOnInit(){<\/code><\/pre><pre class=\"wp-block-code\"><code>this.apiService.sendGetRequest().pipe(takeUntil(this.destroy$)).subscribe((res: HttpResponse&lt;any&gt;)=&gt;{ console.log(res); this.products = res.body; }) }<\/code><\/pre><p>Go back to the <em>src\/app\/data.service.ts file <\/em>to add the following method, which is quite similar to <em>sendGetRequest() <\/em>with a simple twist of taking the URL to which we need to send an HTTP GET request:<\/p><pre class=\"wp-block-code\"><code>public sendGetRequestToUrl(url: string){ return this.httpClient.get(url, { observe: \"response\"}).pipe(retry(3), catchError(this.handleError), tap(res =&gt; { console.log(res.headers.get('Link')); this.parseLinkHeader(res.headers.get('Link'));})); }<\/code><\/pre><p>After that, we can go back to the <em>src\/app\/home\/home.component.ts<\/em> file to define the following method:<\/p><pre class=\"wp-block-code\"><code>public firstPage() {this.products = &#91;];this.apiService.sendGetRequestToUrl(this.apiService.first).pipe(takeUntil(this.destroy$)).subscribe((res: HttpResponse&lt;any&gt;) =&gt; {console.log(res);this.products = res.body;})}public previousPage() {if (this.apiService.prev !== undefined &amp;&amp; this.apiService.prev !== '') {this.products = &#91;];this.apiService.sendGetRequestToUrl(this.apiService.prev).pipe(takeUntil(this.destroy$)).subscribe((res: HttpResponse&lt;any&gt;) =&gt; {console.log(res);this.products = res.body;})}}public nextPage() {if (this.apiService.next !== undefined &amp;&amp; this.apiService.next !== '') {this.products = &#91;];this.apiService.sendGetRequestToUrl(this.apiService.next).pipe(takeUntil(this.destroy$)).subscribe((res: HttpResponse&lt;any&gt;) =&gt; {console.log(res);this.products = res.body;})}}public lastPage() {this.products = &#91;];this.apiService.sendGetRequestToUrl(this.apiService.last).pipe(takeUntil(this.destroy$)).subscribe((res: HttpResponse&lt;any&gt;) =&gt; {console.log(res);this.products = res.body;})}<\/code><\/pre><p>And now, to finalize the tenth step we will need to open the <em>src\/app\/home\/home.component.html<\/em> file to update the template:<\/p><pre class=\"wp-block-code\"><code>&lt;div style=\"padding: 13px;\"&gt;&lt;mat-spinner *ngIf=\"products.length === 0\"&gt;&lt;\/mat-spinner&gt;&lt;mat-card *ngFor=\"let product of products\" style=\"margin-top:10px;\"&gt;&lt;mat-card-header&gt;&lt;mat-card-title&gt;#{{product.id}} {{product.name}}&lt;\/mat-card-title&gt;&lt;mat-card-subtitle&gt;{{product.price}} $\/ {{product.quantity}}&lt;\/mat-card-subtitle&gt;&lt;\/mat-card-header&gt;&lt;mat-card-content&gt;&lt;p&gt;{{product.description}}&lt;\/p&gt;&lt;img style=\"height:100%; width: 100%;\" src=\"{{ product.imageUrl }}\" \/&gt;&lt;\/mat-card-content&gt;&lt;mat-card-actions&gt;&lt;button mat-button&gt; Buy product&lt;\/button&gt;&lt;\/mat-card-actions&gt;&lt;\/mat-card&gt;&lt;\/div&gt;&lt;div&gt;&lt;button (click) =\"firstPage()\" mat-button&gt; First&lt;\/button&gt;&lt;button (click) =\"previousPage()\" mat-button&gt; Previous&lt;\/button&gt;&lt;button (click) =\"nextPage()\" mat-button&gt; Next&lt;\/button&gt;&lt;button (click) =\"lastPage()\" mat-button&gt; Last&lt;\/button&gt;&lt;\/div&gt;<\/code><\/pre><p>Here we are, at the gate of the final, eleventh, step of our journey.<\/p><h3 class=\"wp-block-heading\"><strong>11.<\/strong> <strong>&nbsp;Building and Deploying the Angular Application to Firebase<\/strong><\/h3><p>Head back to the CLI. What you need is the root folder of the project, as you will need to run the following command there to add the Firebase deployment capability to our project:<\/p><pre class=\"wp-block-code\"><code>ng add @angular\/fire<\/code><\/pre><p>The CLI will prompt you to paste in the authorization code. To paste it in you will need to sign into the Google account, associated with your Firebase account, where you will find the authorization code. After that is done, the CLI will prompt you to select a project, which you do. After that, the command-line interface will create the <em>firebase.json<\/em> and <em>.firebaserc<\/em> files and update the <em>angular.json<\/em> file accordingly.<\/p><p>At this point, we are ready to deploy the application to Firebase by using the following command:<\/p><pre class=\"wp-block-code\"><code>ng deploy<\/code><\/pre><p>And now, our production is an asset to Firebase hosting, which also concludes the creation of our Angular App altogether, meaning that we have at our hands a crisp new app ready for usage. But every app needs one crucial thing &#8211; its own CMS. <\/p><figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\"><iframe title=\"Flatlogic Platform: Easily Create, Host and Develop React, Angular, Vue web applications\" width=\"640\" height=\"360\" data-src=\"https:\/\/www.youtube.com\/embed\/DqFRBThafJs?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" data-load-mode=\"1\"><\/iframe><\/div><figcaption><a href=\"https:\/\/flatlogic.com\/templates\/angular-material-admin-net-core-3\">https:\/\/flatlogic.com\/templates\/angular-material-admin-net-core-3<\/a><\/figcaption><\/figure><h2 class=\"wp-block-heading\" id=\"six\"><strong>How to Create a CMS for Your Angular App<\/strong><\/h2><p>The secret to creating a CMS for your <a href=\"https:\/\/flatlogic.com\/templates\/angular-material-admin-net-core-3\" target=\"_blank\" rel=\"noreferrer noopener\">Angular App<\/a> faster is in using the <a href=\"http:\/\/flatlogic.com\/generator\">Flatlogic Platform<\/a>. There are 5 short steps to build your CMS, each taking less than a minute.<\/p><h3 class=\"wp-block-heading\"><strong>1. Choose a name for your project<\/strong><\/h3><p>This one is pretty self-explanatory.<\/p><h3 class=\"wp-block-heading\"><strong>2. Choose your project&#8217;s stack<\/strong><\/h3><p>Choose the stack for the front end first.<\/p><h3 class=\"wp-block-heading\"><strong>3. Choose a design for your CMS<\/strong><\/h3><p>There are five beautiful ready-made designs to pick the one you like the most.<\/p><h3 class=\"wp-block-heading\"><strong>4. Create a database schema editor for your CMS&nbsp;<\/strong><\/h3><p>There are also a couple of ready-made schemas for you. Or just create a brand-new schema from scratch.<\/p><h3 class=\"wp-block-heading\"><strong>5. Review &amp; generate your CMS<\/strong><\/h3><p>This one is just a measure of assurance, as all you have to do is just review your choices and press the \u00abCreate Project\u00bb button.<\/p><h2 class=\"wp-block-heading\" id=\"seven\"><strong>Conclusion<\/strong><\/h2><p>As you can see, the process of creating an Angular App is quite fascinating with all the different little things you have to keep in mind. But what we find most interesting about this whole process is the fact that Angular, despite its initial heaviness, opens a door to endless possibilities in app development once you tame this beast. And with that, we end today&#8217;s article on <strong><a href=\"https:\/\/flatlogic.com\/blog\/top-angular-admin-dashboard-templates\/\" target=\"_blank\" rel=\"noreferrer noopener\">How to Create Angular Apps<\/a><\/strong>. <\/p><p><strong>Have a nice day and feel free to read up on more of our articles!<\/strong><\/p><ul class=\"wp-block-latest-posts__list wp-block-latest-posts\"><li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/flatlogic.com\/blog\/do-you-own-the-code-in-ai-builders\/\">Do You Own the Code in AI Builders? A Practical Checklist<\/a><\/li><li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/flatlogic.com\/blog\/research-starting-a-web-app-ai-vibe-coding-and-what-actually-works\/\">[Research] Starting a Web App in 2026: AI, Vibe Coding, and What Actually Works<\/a><\/li><li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/flatlogic.com\/blog\/how-much-does-a-web-app-cost\/\">How Much Does a Web App Cost? A Scope-Based Calculator<\/a><\/li><li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/flatlogic.com\/blog\/why-most-ai-app-builders-fail\/\">Why Most AI App Builders Fail After the First Demo<\/a><\/li><li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/flatlogic.com\/blog\/what-is-an-admin-panel-in-modern-saas\/\">What Is an Admin Panel in Modern SaaS?<\/a><\/li><\/ul>","protected":false},"excerpt":{"rendered":"<p>Create Angular apps with our all-encompassing guide. Learn more about the pros and cons of TypeScript, Flatlogic platform, etc.<\/p>\n","protected":false},"author":13,"featured_media":10312,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"flatlogic_tldr":"Step-by-step Angular 8 app: set up CLI, generate components, add routing and Material UI\nMock a REST API with json-server and Faker; consume via HttpClient with error handling\nImplement pagination via Link headers; display products with Angular Material\nDeploy to Firebase with ng add @angular\/fire and ng deploy; optional CMS via Flatlogic Platform","flatlogic_facts":[{"text":"Tutorial targets Angular 8; first step installs Angular CLI 8 via npm.","source":""},{"text":"Local dev server runs at http:\/\/localhost:4200 after ng serve.","source":""},{"text":"Mock API runs on http:\/\/localhost:3000 using json-server; generate.js seeds 300 products.","source":""},{"text":"Pagination example requests use _page=1&_limit=20 and parse Link headers.","source":""},{"text":"Firebase deploy uses ng add @angular\/fire; app is deployed with ng deploy.","source":""}],"footnotes":""},"categories":[28],"tags":[51,401,409,79],"class_list":["post-9293","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guides","tag-angular","tag-angular-admin-templates","tag-web-app-development","tag-web-development"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.2 (Yoast SEO v26.2) - 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