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Dynamic content components that define a standard structure and behavior while remaining flexible in application. Each child component has a parent component whenever it is used. This dynamic content is passed down from the component’s parent and placed in a specific location within the part. Therefore, the effect is propagated to the parent element.
Components Shared
This article’s primary focus is on creating reusable Angular components, but before we get into that, let’s take a quick look at a fantastic tool that facilitates the sharing and collaboration of such features.
Bit facilitates the creation, distribution, and collaboration of separate parts within a group. Bit’s cloud makes it easy to locate and use reusable components by enclosing them along with their configuration and dependencies. Bit converts Each piece into a quasi-package, making it a quasi-repository—simple communication and cooperation. Quickly integrate with your existing work. Repositories no longer constrain modularity and reusability.
Create Reusable Parts
Let’s look at a situation where reusable parts would be helpful in our current endeavor. An online music player is being developed by programmer A, and an online music-sharing platform is being developed by programmer B. For A’s idea to work, the music stored on the player must be listed to be selected and played. Also, B’s project needs the music files stored on the players so the user can choose a file to play.
How much a given component may be reused?
Markup reusability across templates makes future tweaks easy. Make sure to update all of the various implementations, such as Button. Alternate states (such as “loading” and “disabled”) can be set up via configuration.
Allow the child component to override the markup of the parent component (more so than properties) [content area within an element] for greater flexibility. Tell the kid what to render (list rendering customization). Extend: modify a component’s behavior in many ways. Extend by nesting up the component hierarchy. Every part develops specialized capabilities.
Aspects of Containers
These “Smart” components fetch data from an external service and then pass it along to “Dumb” ones for rendering. Like its name suggests, “Containers” are used to store or organize various parts, both “Dumb” and “Smart,” including themselves.
The data needed to render a container component comes from an injected Service or Store/Effects if the parent component uses Redux/NgRx.
They generate data but have no presentational content; instead, they send that data to Presentational components, whose responsibility is to render the data appropriately. The SRP in SOLID dictates that features with multiple concerns, such as a Container that includes presentational content, should be extracted.
Elements of Presentation
Because they rely on their parent component for data to display, these are often called “Dumb” components. No Service injection or secondary action is taken; they just deal with the display logic. They get information from their parent components via the @Output() bindings and send it back to them via the @Input() bindings.
Like pure functions, presentational components respond to input by returning a value. They are straightforward to optimize because their execution is predictable and does not alter any external state. Because they must rely on their input to determine what to display, presentational components can be made highly efficient using OnPush memorization; in this case, Angular will not re-render the element if its value has not changed.
Which one is better, ng-content or a template reference?
Because of how lifecycle management operates in Angular, there is a nuanced distinction between using a template and utilizing ng-content. A component is declared where Angular’s OnInit and onDestroy hooks take effect, not where the part is used or rendered. If you use it, the child will survive the destruction of the element containing the ng-content. Even if the child component has not yet been generated in the DOM, its constructor and init hooks will be called upon when constructed with ng-content.
Since the templateRef only gets destroyed with the component that instantiated it and the lifecycle hooks only get fired if the templateRef has been rendered in the DOM, sending the template projection as templateRef is the most maintainable and efficient approach.
Including an Angular module
Where div>current weather/div> is, you should show the current weather conditions. You need to create a part that will lead to the weather information to do this.
The Model-View-View-Model (MVVM) design pattern explains why breaking out the component into its file is preferable. The Model-View-Controller (MVC) pattern is one that you might be familiar with. Between 2005 and 2015, the vast majority of web developers used the MVC pattern to structure their code. There are significant distinctions between the MVC pattern and MVVM.
The very nature of a well-implemented MVVM architecture ensures the separation of concerns. The presentation logic is wholly isolated from the business logic. Since the correction of a defect in the functionality of one View does not affect the functioning of any other Views, once a View is developed, it remains developed. However, if you use visual inheritance well and build reusable user controls, you can often eliminate problems in multiple areas with only one modification.
Angular well supports the MVVM architecture. By acting as a customized version of the model, ViewModels cleanly encapsulate any display logic and provide simplified View code. Views and ViewModels have a simple relationship, which makes it easier to encapsulate common UI behaviors in reusable user controls.
Conclusion
An Angular component helps simplify developing an application’s user interface. Making a user interface in Angular is similar to making one in WPF. The UserControl class represents the controls often used by the user. A UserControl is a reusable container for enclosing markup and code, making it possible to reuse the same user interface and code across multiple contexts. Hire the Top Angular Development Company in India for your next project.
There will be a.xaml file containing the user interface markup, a C# file containing the functionality, and maybe a resource dictionary including any stylistic information for this user control. In Angular, we make use of a building block called a Component. The user interface markup for a component is stored in an HTML file. It uses a typescript file for its properties and logic and a CSS file for its presentational details. Go ahead and compare the two to find out how similar they are.
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