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Can we have multiple router outlet in angular?

Can we have multiple router outlet in angular?

You can have multiple router-outlet in same template by configuring your router and providing name to your router-outlet, you can achieve this as follows.

Can you have multiple router outlets in the same template?

Yes! We can use multiple router-outlets in same template by configuring our routers and simply add the router-outlet name. You can see in the example.

How do I set up multiple router outlets?

You can create a named Router outlet using the name property of the <router-outlet> component:

  1. <router-outlet name=”outlet1″>router-outlet>
  2. <router-outlet>router-outlet> <router-outlet name=”sidebar”>router-outlet>
  3. <router-outlet>router-outlet> <router-outlet name=”sidebar”>router-outlet>

How do I use two router outlets in angular 6?

  1. App routing config. const routes: Routes = [ {path: ‘stories’, component: StoriesComponent}, {path: ”, component: EnterOverviewComponent, children: [ {path: ‘login’, component: LoginComponent, outlet: ‘login’}, {path: ‘register’, component: RegisterComponent, outlet: ‘register’}, ]} ];
  2. App-root.
  3. Navbar comp.

What is activated route in angular?

What is an activated route? The Angular Docs define the ActivatedRoute as. A service that is provided to each route component that contains route specific information such as route parameters, static data, resolve data, global query params and the global fragment.

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 AuthGuard in angular?

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.

How do I know if lazy loading is working?

You can check to see that a module is indeed being lazy loaded with the Chrome developer tools. In Chrome, open the dev tools by pressing Cmd+Option+i on a Mac or Ctrl+Alt+i on a PC and go to the Network Tab. NOTE: Another important check is to make sure that a module loaded lazily is not loaded again.

Should I use lazy loading angular?

Lazy loading is a routing technique in which the JavaScript components load in the browser only when their corresponding route is activated. The main aim of lazy loading is to improve the performance of the Angular app by restricting the unnecessary loading of components.

Can components be lazy loaded?

You can lazy load a component and have its children in turn lazily load or eagerly load. But you could also do this with a module (specifically an NgModule ). So what do you do? Lazy loading a component helps support scenarios where you want to access features without routing.

How does angular handle lazy loading?

To lazy load Angular modules, use loadChildren (instead of component ) in your AppRoutingModule routes configuration as follows. content_copy const routes: Routes = [ { path: ‘items’, loadChildren: () => import(‘./items/items. module’). then(m => m.

What is lazy loading in angular interview questions?

Lazy loading is a technique in Angular that allows you to load JavaScript components asynchronously when a specific route is activated. This can add some initial performance during the initial load, especially if you have many components with complex routing. Lazy loading is the ability to load the module on demand.

What is a good use case for NGRX store?

Testability as @muetzerich mentioned already is also a benefit of using ngrx/store. Reducers are pure functions and those functions are easy to test, because they take an input and simply return an output and do not depend on properties outside the function and have no side-effects, e.g. http calls etc.

What is observable in angular interview questions?

An observable is like a Stream. It is used to pass zero or more events where the callback is called for each event. Observable is always preferred over Promise because it provides all the features of Promise and more. By using an observable, we can handle single or multiple events.

What is promise in angular?

Promises in AngularJS are provided by the built-in $q service. They provide a way to execute asynchronous functions in series by registering them with a promise object. Practically speaking AJAX calls using the $http service are some of the most common scenarios where promises are used.

What is use of RxJS in angular?

RxJS (Reactive Extensions for JavaScript) is a library for reactive programming using observables that makes it easier to compose asynchronous or callback-based code. RxJS provides an implementation of the Observable type, which is needed until the type becomes part of the language and until browsers support it.

How do I prepare for angular interview?

The following tips can help you prepare for your Angular interview: Stay up-to-date with various programming languages, including JavaScript, TypeScript and HTML coding, as working within Angular can require the use of different language applications.

What should I ask in angular interview?

Angular Interview Questions

  1. Why were client-side frameworks like Angular introduced?
  2. How does an Angular application work?
  3. What are some of the advantages of Angular over other frameworks?
  4. List out differences between AngularJS and Angular.
  5. What is AOT compilation?
  6. Explain Components, Modules and Services in Angular.

What is angular mainly used for?

Angular is a platform and framework for building single-page client applications using HTML and TypeScript. Angular is written in TypeScript. It implements core and optional functionality as a set of TypeScript libraries that you import into your applications.

What is service in angular?

An Angular service is a stateless object and provides some very useful functions. These functions can be invoked from any component of Angular, like Controllers, Directives, etc. This helps in dividing the web application into small, different logical units which can be reused.

What is HttpClient in angular?

HttpClient is introduced in Angular 6 and it will help us fetch external data, post to it, etc. We need to import the http module to make use of the http service. Let us consider an example to understand how to make use of the http service. Let us now use the http client in the app. component.

How would you create a service within angular?

To create an Angular Service class, you need to run the following command via Angular CLI.

  1. ng generate service crud.
  2. # src/app/crud.service.spec.ts # src/app/crud.service.ts.
  3. import { Injectable } from ‘@angular/core’; @Injectable({ providedIn: ‘root’ }) export class CrudService { constructor() { } }

What is @inject in angular?

Dependency injection, or DI, is a design pattern in which a class requests dependencies from external sources rather than creating them. Angular’s DI framework provides dependencies to a class upon instantiation. You can use Angular DI to increase flexibility and modularity in your applications.

What is difference between @inject and @injectable?

The @Inject() Decorator must be used at the level of constructor parameters to specify metadata regarding elements to inject. The @Inject mechanism that letting angular know that parameter must be injected of a class constructor. It can use like as so.

What is a pipe angular?

Pipes are a useful feature in Angular. They are a simple way to transform values in an Angular template. There are some built in pipes, but you can also build your own pipes. A pipe takes in a value or values and then returns a value.

What is ngOnInit () in angular?

ngOnInit is a life cycle hook called by Angular to indicate that the Angular is done creating the component. In order to use OnInit we have to import it in the component class like this: import {Component, OnInit} from ‘@angular/core’; Actually implementing OnInit in every component is not mandatory.

What is pure and impure pipes in angular?

In a component which uses Default change detection strategy, when change detection happens, if the pipe is impure, then the transform method will be called. If the pipe is pure, whether there are any changes in input parameters in the transform method from the last call, then transform method will be called.

What is pipe and tap in angular?

import { tap } from ‘rxjs/operators’; Pipeable operators such as tap , are used within pipe function of Observable . tap performs side effects only when the Observable returned by tap is subscribed. tap can be used to debug values emitted by Observable or to perform any side effect.

What is MAP operator in angular?

The Angular observable Map operator takes an observable source as input. It applies a project function to each of the values emitted by the source observable and transforms it into a new value. We use a Map with a Pipe, which allows us to chain multiple operators together.

Can we have multiple router outlet in angular?

Can we have multiple router outlet in angular?

You can have multiple router-outlet in same template by configuring your router and providing name to your router-outlet, you can achieve this as follows.

What is the use of router outlet in angular?

Router-Outlet is an Angular directive from the router library that is used to insert the component matched by routes to be displayed on the screen.

How would you use a router outlet to display a view?

Topic:

  1. Declare the router outlet in the root module.
  2. Nothing. The view will display in the tag.
  3. Create an instance of the router outlet.
  4. Declare the router outlet as a service.

When should you use a router outlet?

Router-outlet in Angular works as a placeholder which is used to load the different components dynamically based on the activated component or current route state. Navigation can be done using router-outlet directive and the activated component will take place inside the router-outlet to load its content.

What is router outlet Angular 9?

The router-outlet is a directive that’s available from the @angular/router package and is used by the router to mark where in a template, a matched component should be inserted. Thanks to the router outlet, your app will have multiple views/pages and the app template acts like a shell of your application.

How do I name my router outlet?

You can create a named Router outlet using the name property of the component:

How do I use multiple router outlets in Angular 10?

  1. Create a new Angular application.
  2. Create New Components in CLI.
  3. Adding RouterOutlet directive at each level.
  4. Modularize the application component.
  5. Create Modules and RouterModules of Child Components.
  6. Update Leaves and Balance Module Files.
  7. Implement Nested Routing with Lazy-Loading.

What is pathMatch full in Angular?

pathMatch: ‘full’ means, that the whole URL path needs to match and is consumed by the route matching algorithm.

How does the < router-outlet > work in angular?

If we use the <router-outlet> in a component (Any component) and then put a routerLink to another component within that component, does the link always render the component linked to in the <router-outlet> of the currently active component? In other words are component routerLink attributes always paired with the <router-outlet> within a component?

What’s the router outlet and how to use it?

Angular 9/8 How-To: What is the Router-Outlet and how to use it? What’s the Router Outlet in Angular? The router-outlet is a directive that’s available from the @angular/router package and is used by the router to mark where in a template, a matched component should be inserted.

How to add a route to a component in angular?

You can do the mapping between a component and a URL path in the routing configuration module which is already generated by Angular CLI in the src/app/app-routing.module.ts file. Inside the routes array, you simply add a route as follows supposed that you have a home component in your app:

How is a view mapped to a URL in angular?

You can think of a view as an Angular component that’s mapped to or associated with a unique URL path. You can do the mapping between a component and a URL path in the routing configuration module which is already generated by Angular CLI in the src/app/app-routing.module.ts file.

How to name a router outlet in angular?

Inside the routes array, you simply add a route as follows supposed that you have a home component in your app: After adding this route, the router will render the home component inside the router outlet when the home path is matched. Naming a Router Outlet? The router outlet can be given a name using the name property as follows:

Angular 9/8 How-To: What is the Router-Outlet and how to use it? What’s the Router Outlet in Angular? The router-outlet is a directive that’s available from the @angular/router package and is used by the router to mark where in a template, a matched component should be inserted.

You can do the mapping between a component and a URL path in the routing configuration module which is already generated by Angular CLI in the src/app/app-routing.module.ts file. Inside the routes array, you simply add a route as follows supposed that you have a home component in your app:

How to set default content in the router-outlet EG?

I want to set some default text inside the router-outlet until it is populated. I have a parent component that will display the child route component within the router-outlet on that page. There are 2 buttons that will populate the router-outlet with the child component when clicked. How can i place content inside the router outlet eg.