Download Angular 2 By Example by Chandermani Arora PDF

By Chandermani Arora

Realize every thing you must be aware of to construct your personal Angular 2 functions the hands-on method Angular 2 can assist you construct swifter, extra effective, and extra versatile cross-platform purposes. Angular 2 is understood for taking the discomfort out of javascript improvement, and permitting extra equipped, readable, and testable code. This booklet builds 3 apps with various levels of complexity. It begins with an easy ‘Guess the quantity’ video game, which serves as a platform to release you into the realm of Angular. subsequent, you'll learn how to build a favored ‘7-Minute exercise session’ app, overlaying the development blocks of Angular. the ultimate app, ‘Personal coach’ morphs the prevailing ‘7-Minute exercise routine’ right into a full-fledged own exercise routine builder and runner, overlaying complex directive construction, that's the main primary and strong characteristic of Angular. as well as this, you'll find out about testability and the framework constructs Angular offers to successfully try out your app. The publication concludes by means of giving you useful suggestion and necessary information that would come in useful as you construct progressively more apps with Angular.

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Additional resources for Angular 2 By Example

Example text

When we run our app, Angular binding starts up once the browser has rendered the raw HTML in our view. The framework then compiles this view template and, in the process, sets up the necessary binding. Next, it does the necessary synchronization between our component class and the view template that produces the final rendered output. The following screenshot depicts the transformations that happen to the view template after data binding is done for our app: We can ourselves see the untransformed view template of the app (what is shown on the left-hand side of the preceding screenshot) by removing the three *ngIf directives and the expressions assigned to them from the paragraphs below the input box and refreshing the app in the browser.

Let's look at the HTML code line that we created for the first of these event bindings. value" /> In this case, the input event of the input element is bound to an expression. value, which is the value being entered by the user. Behind the scenes, when we use this syntax, Angular sets up an event handler for the event that we are binding to. In this case, the handler updates the guess property in our component class whenever the user enters a number in the input field. There are a couple of other places in your code where the ( ) parentheses appear: These two event bindings tie the click events for the buttons on the screen to methods in our component.

The process of doing that requires us to add code that bootstraps our component. bootstrapModule(AppModule); As you can see, we are first importing the platformBrowserDynamic module from @angular/ platform-browser-dynamic. Like the import of BrowseModule in the appModule file, this import is specifically for browser-based applications. Next we add an import of our AppModule, which we have just defined. Finally, we assign platformBrowserDynamic(), which we just imported, to a constant: platform.

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