angular 5 tutorial pdf

Should I Use Angular?

It depends. Some developers will tell you that it’s better to use React and build your own components without much additional code. But that may be a problem, too. Angular is a fully integrated framework that allows you to start working on your project quickly without thinking about which libraries to select and how to deal with everyday problems.

Typescript

If you don’t know TypeScript, don’t be scared. Your JavaScript knowledge is enough to learn TypeScript quickly, and most modern editors are quite effective in helping with that. The most preferable options nowadays are VSCode and any of the JetBrains IntelliJ family (e.g., Webstorm or, in my case, RubyMine). For me, it’s preferable to use a smarter

Angular CLI

Angular now has its own CLI, or command line interface, which will do most of the routine operations for you. To start using Angular, we have to install it. It requires Node 6.9.0 or higher as well as NPM 3 or higher. We are not going to cover their installation for your system, as it’s better to find up-to-date documentation for installation on yo

Components

We have our empty app running. Let’s talk about app composition in Angular. If you have some background in AngularJS development, you know there were controllers, directives, and components that were somehow likedirectives but simpler, to allow you to upgrade to Angular 2. For those who don’t have that wonderful experience of having to choose betwe

Our First Component

We are going to display notes as cards in our interface, so let’s start by generating our first component, representing the card itself. For that, let’s use Angular CLI by running the following command: If we look into src/app/card/card.component.ts, we can see they are almost the same code, as we have in our AppComponent, with one small difference

Component Communication

Let’s add a New Card Input component that will allow us to add notes: And add this next to its template: Next, add this to the component decorator: And add our new component to the AppComponent template: Let’s take a look at the browser. The problem is that our new component isn’t doing anything. Let’s make it work—let’s start by adding a variable

Working with Native Events

So we have our variable populated, but we still need to send that value to the card list in AppComponent. For communicating data to the component Angular, we must have input. It seems that to communicate data outside the component, we have output, and we use it in the same way we would use input—we import it from the Angular code and use a decorato

Working with Forms

There are a couple of approaches to working with forms in Angular—one is template-driven and we are already using the most valuable part of it: ngModelfor two-way binding. But forms in Angular are not only about model values, but also about validity. Currently, we check for validity of NewCardInput in our HostListener function. Let’s move it to a m

Rxjs

So what’s actually happening here? We are seeing RxJS in action. Let’s discuss it. I guess you all know at least something about promises and building asynchronous code. Promise handling a single event. We ask the browser to make POST, for example, and it returns us a promise. RxJS operates with Observables, which handle streams of events. Think ab

Working with Back-Ends

Since we’re not building the server side here, we are going to use Firebase for our API. If you actually do have your own API back-end, let’s configure our back-end in development server. To do that, create proxy.conf.jsonin the root of the project and add this content there: For every request from our app to its host (which, if you remember, is We

Angular Full Course in 5 Hours Angular Tutorial For Beginners Angular Training Edureka

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