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If you are coming from the background of working with angularjs, it was quite straight forward to access and manipulate the DOM there. You had access to the DOM node through element
injected in the link
function of the directive.
function link(scope, element, attrs) {
}
Or through angular.element
which was an AngularJS’s built in subset of jQuery. But this approach had its drawbacks. It made your code tightly coupled with Browser’s API.
The new Angular (2 onwards) works on multiple platforms: mobile, web workers etc. So, they have introduced a number of APIs to work as an abstraction layer between your code and platform APIs. These APIs come in the form of different reference types likeElementRef
, TemplateRef
, ViewRef
, ComponentRef
and ViewContainerRef
.
In this blog, we will see some examples of how these reference types can be used to manipulate DOM in angular. But before that let’s look at the ways to access these reference types within a Component/Directive.
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The article explores common elements used for DOM manipulation in Angular with a particular focus on ViewContainerRef. Learn why they are needed, how they work and when you need to use which.
#angular #dom-manipulation #view-container-ref #dom
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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
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Learn How to use Angular Material Autocomplete Suggestions Search Input. I covered multiple use cases.
Please watch this video. I hope this video would be helpful for you to understand it and use it in your projects
Please subscribe: https://www.youtube.com/channel/UCL5nKCmpReJZZMe9_bYR89w
#angular #angular-material #angular-js #autocomplete #angular-material-autocomplete #angular-tutorial
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Most of the time, we are using JavaScript techniques inside angular. we almost forget about the Framework’s features. Let’s utilize them.
Most of the angular developers were starting their career in JavaScript and then they came up into Angular. So they are more comfortable in JavaScript. Yeah! That’s pretty cool. But still, we are using JavaScript techniques inside angular mostly. One of them is DOM Manipulation.
For a long time, I was using core JavaScript techniques to manipulate the DOM in Angular. I always use “document. ” object in angular. I don’t even use template reference variables. I directly manipulate the DOM. Is that correct? No, it is not. Don’t do that mistake. Angular has a lot of features. Angular makes our DOM manipulation easy and it makes our code more structured and scalable. Alright, Let see about DOM manipulation in angular.
Usually, there are two concepts in DOM Manipulations.
#angular #javascript #dom-manipulation #typescript #angular10 #components
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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