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This is a quick example to show how to display a list of items in Angular with the ngFor directive.
The example simply renders an array of users as rows in a table with <tr *ngFor="let user of users">
.
Here it is in action:
The app component template contains some standard html for a heading and table, and inside the table the tr
tag uses the *ngFor
Angular directive to loop over the users
array and render a table row for each user that includes the user name, email and role.
#angular #ngfor
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Angular is a TypeScript based framework that works in synchronization with HTML, CSS, and JavaScript. To work with angular, domain knowledge of these 3 is required.
In this article, you will get to know about the Angular Environment setup process. After reading this article, you will be able to install, setup, create, and launch your own application in Angular. So let’s start!!!
For Installing Angular on your Machine, there are 2 prerequisites:
First you need to have Node.js installed as Angular require current, active LTS or maintenance LTS version of Node.js
Download and Install Node.js version suitable for your machine’s operating system.
Angular, Angular CLI and Angular applications are dependent on npm packages. By installing Node.js, you have automatically installed the npm Package manager which will be the base for installing angular in your system. To check the presence of npm client and Angular version check of npm client, run this command:
· After executing the command, Angular CLI will get installed within some time. You can check it using the following command
Now as your Angular CLI is installed, you need to create a workspace to work upon your application. Methods for it are:
To create a workspace:
#angular tutorials #angular cli install #angular environment setup #angular version check #download angular #install angular #install angular cli
1599464577
This is a quick example to show how to display a list of items in Angular with the ngFor directive.
The example simply renders an array of users as rows in a table with <tr *ngFor="let user of users">
.
Here it is in action:
The app component template contains some standard html for a heading and table, and inside the table the tr
tag uses the *ngFor
Angular directive to loop over the users
array and render a table row for each user that includes the user name, email and role.
#angular #ngfor
1599126120
Angular ngFor is an inbuilt directive that helps us to loop through the backend data and display the data at the frontend. We can display the data in whatever format we want. The general use case is to display the data in tabular format means in table format. In the real Angular app, the data is dynamic coming from the backend API. So, we need to display the data in a proper format so that the user can interact adequately. For this example, we will take a static data defined in an array format and then display that data on the frontend using the Angular ngFor directive.
To display data in Angular, we can use the Angular httpclient module to send a network request to a server and fetch the data and then use the ngFor directive to render the data to the frontend.
If you are new to Angular 9, then check out this Angular 9 CRUD Tutorial article. Let’s see one by one step to display data in Angular 9.
#angular #angular 9 crud #angular ngfor
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What is Angular? What it does? How we implement it in a project? So, here are some basics of angular to let you learn more about angular.
Angular is a Typescript-based open-source front-end web application platform. The Angular Team at Google and a community of individuals and corporations lead it. Angular lets you extend HTML’s syntax to express your apps’ components clearly. The angular resolves challenges while developing a single page and cross-platform applications. So, here the meaning of the single-page applications in angular is that the index.html file serves the app. And, the index.html file links other files to it.
We build angular applications with basic concepts which are NgModules. It provides a compilation context for components. At the beginning of an angular project, the command-line interface provides a built-in component which is the root component. But, NgModule can add a number of additional components. These can be created through a template or loaded from a router. This is what a compilation context about.
Components are key features in Angular. It controls a patch of the screen called a view. A couple of components that we create on our own helps to build a whole application. In the end, the root component or the app component holds our entire application. The component has its business logic that it does to support the view inside the class. The class interacts with the view through an API of properties and methods. All the components added by us in the application are not linked to the index.html. But, they link to the app.component.html through the selectors. A component can be a component and not only a typescript class by adding a decorator @Component. Then, for further access, a class can import it. The decorator contains some metadata like selector, template, and style. Here’s an example of how a component decorator looks like:
@Component({
selector: 'app-root',
templateUrl: 'app.component.html',
styleUrls: ['app.component.scss']
})
Modules are the package of functionalities of our app. It gives Angular the information about which features does my app has and what feature it uses. It is an empty Typescript class, but we transform it by adding a decorator @NgModule. So, we have four properties that we set up on the object pass to @NgModule. The four properties are declarations, imports, providers, and bootstrap. All the built-in new components add up to the declarations array in @NgModule.
@NgModule({
declarations: [
AppComponent,
],
imports: [
BrowserModule,
HttpClientModule,
AppRoutingModule,
FormsModule
],
bootstrap: [AppComponent]
})
Data Binding is the communication between the Typescript code of the component and the template. So, we have different kinds of data binding given below:
#angular #javascript #tech blogs #user interface (ui) #angular #angular fundamentals #angular tutorial #basics of angular
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Angular NgFor is a structural directive that renders the template for each item in the collection. The ngForOf is generally used in the shorthand form *ngFor. The core directive ngFor allows us to build data presentation lists and tables in our HTML templates. When we need to display data in Angular, we use the ngFor directive.
NgFor is an inbuilt template directive that makes it easy to iterate over something like an array or an object and create a template for each item. You can also set local variables for the following exported values: index, first, last, even, and odd. the index will return the current loop index and the other values by providing a boolean indicating if the value is true or false.
Let’s see the Syntax of the** NgFor directive.**
<ng-template *ngFor="let item of items; index as i; trackBy: trackByFn">...</ng-template>
Let’s take an example of the ngFor directive in Angular.
#angular #angular 9 #angular ngfor