How do I create a shared module in angular 6?

Sharing moduleslink

You can put commonly used directives, pipes, and components into one module and then import just that module wherever you need it in other parts of your app. Note the following: It imports the CommonModule because the module’s component needs common directives.

How can we create a module in angular?

Let us install brand new Angular 7 project and then we use Feature Modules to organize our project.
  1. Step 1: Install Angular 7.
  2. Step 2: Create a new Angular Module.
  3. Step 3: Create Angular Components.
  4. Step 4: Create a model and service for student.
  5. Step 5: Configure the routing.
  6. Step 6: Display the data.

How do I import common modules in angular 6?

Importing moduleslink

When you use these Angular modules, import them in AppModule , or your feature module as appropriate, and list them in the @NgModule imports array. For example, in the basic app generated by the Angular CLI, BrowserModule is the first import at the top of the AppModule , app. module.

How do I split angular modules?

If we want to lazy load a module at a specific route, we do so by using the loadChildren property. Here we specify the path and the name of the module, separated by a #. Afterward, we can import the configured module in our AppModule. We also remove the import of our AuthenticationModule, since that is lazy loaded.

What is angular common module?

BrowserModule provides services that are essential to launch and run a browser app. BrowserModule also re-exports CommonModule from @angular/common, which means that components in the AppModule module also have access to the Angular directives every app needs, such as NgIf and NgFor.

What is lazy loading in angular?

Lazy loading is a technique in Angular that allows you to load JavaScript components asynchronously when a specific route is activated. It improves the speed of the application load time by splitting the application into several bundles. When the user navigates through the app, the bundles are loaded as required.

What is HttpClient in angular?

Most front-end applications need to communicate with a server over the HTTP protocol, in order to download or upload data and access other back-end services. Angular provides a client HTTP API for Angular applications, the HttpClient service class in @angular/common/http .

How we can implement lazy loading in angular?

Lazy loading helps us to download the web pages in chunks instead of downloading everything in a big bundle. To implement the Lazy Loading in Angular we need to create a routing module and a module. ts file for the component we need to lazy load. In the above image, we have created two files which are posts-routing.

What is CanActivate in angular?


Interface that a class can implement to be a guard deciding if a route can be activated. If all guards return true , navigation continues. If any guard returns false , navigation is cancelled.

What is CanDeactivate?

CanDeactivate is an interface that is implemented by a class to create a guard which decides if a route can be deactivated. The guard can be added to any component route using canDeactivate attribute of Angular Route interface.

Can activate guard in angular?

What is CanActivate Guard. The Angular CanActivate guard decides, if a route can be activated ( or component gets rendered). We use this guard, when we want to check on some condition, before activating the component or showing it to the user. This allows us to cancel the navigation.

What is RouterStateSnapshot in angular?

What is RouterStateSnapshot, and how is it different from RouterState? RouteStateSnapshot is an immutable data structure representing the state of the router at a particular moment in time. Any time a component is added or removed or parameter is updated, a new snapshot is created.

What is AuthGuard?

AuthGuard is a class which implements the interface CanActivate , to decide whether the user has access/permission to view specific page / route / path in the application or not. This will be useful when we need authentication/authorization based control over the application.

Why snapshot is used in angular?

If you intend not to update your URL parameter within the same component you are accessing it, then you can use the snapshot. As the name suggests, the parameter would only be accessed once, when the component loads. Hence, it won’t be updated, even if you change its value from within the same component.

What is ActivatedRoute?

ActivatedRoute is an interface and it contains the information about a route associated with a component loaded into an outlet and it can also be used to traverse the router state tree. And it contains the list of Properties – 1. Snapshot – It is the current snapshot of this route.

What is RouterLink?

In Angular, RouterLink is a directive for navigating to a different route declaratively. navigate and Router. navigateByURL are two methods available to the Router class to navigate imperatively in your component classes.

How do I get the current URL in ActivatedRoute?

The official documentation shows a different way to get the current url: which is async, so maybe it’s not what you’re after. Hope this helps. 🙂 For me the following works: const url = ‘/’ + this.

How do you activate a route?

  1. The Need to Get a Parameter from a URL.
  2. Make a Dynamic Parameter in the Route Path.
  3. Extract a Parameter from a URL.
  4. Extract a Parameter Using `ActivatedRoute`
  5. Extract a Parameter Using `ActivatedRouteSnapshot`

How do I retrieve data from a route?

💉 Shot #9: How to get route data
  1. Step 1: Inject ActivatedRoute.
  2. Step 2: Get route data. ActivatedRoute has data attribute with type Observable<Data> , if you assume that route data might change, you need to subscribe to it. In most cases route data is static and you can use route snapshot:

How do you activate a route in react?

To enable routing in React, we need to wrap our application with BrowserRouter and define routes in the Switch . Anything added inside the Route component, will be rendered if route path matches the URL.

How can I get data from activated route?

How To Fetch Data Using ActivatedRoute In Angular 7/8/9
  1. ng g c product-list. ng g c product-detail. ng g c product-list ng g c product-detail.
  2. const routes: Routes = [ { path: ‘list’, component: ProductListComponent }, { path: ‘detail/:id’, component: ProductDetailComponent }, { path: ”, redirectTo: ‘/list’, pathMatch: ‘full’ },
  3. ng g s product. ng g s product.

How do I navigate data to my router?

How to pass data between routed components in Angular
  1. Using @Input and @Output.
  2. By injecting parent component through constructor or child components through @ViewChild , @ViewChildren , @ContentChild , @ContentChildren and directly calling component’s API.
  3. Using services (this covers state management libraries like ngrx)
  4. Using router parameters.

What is difference between router and ActivatedRoute in angular?

Difference between activatedroute and routerstate

RouterState is an interface which represents the state of the router as a tree of activated routes. Every node of this tree knows about the “consumed” URL segments, the extracted parameters, and the resolved data.