Data synchronization between models and views is required in web development. The data values are stored in models, whereas views are concerned with what the user sees. If you want to learn more about how this works in Angular, check out this article on Angular Data Binding.
What is Data Binding, and how does it work?
The process that connects the application's UI (User Interface) to the models is known as data binding. The user will be able to manipulate the elements on the website using the browser if Data Binding is used. As a result, if a variable is changed, the Document Object Model, or DOM, must be updated to reflect the change.
Data Binding defines the connection between components and the DOM in Angular. Data binding is included in all Angular versions, from AngularJS to the most recent Angular 9 version.
Data Binding Types in Angular
Both one-way and two-way data binding are supported by Angular. One-way data binding is a simple data binding method that allows you to alter displays using models. This means that any modifications made to the Typescript code will be mirrored in the HTML. One-way data binding in Angular is accomplished by:
- Interpolation or String Interpolation
- Property binding
- Event binding
On the other side, two-way data binding allows data to be synchronized in such a way that views can be updated using models and models can be updated using views. This means that a component class and its template will be able to communicate information in your application.
To return HTML output from TypeScript code, i.e. from components to views, interpolation binding is utilized. The template expression is enclosed in double curly braces in this case. Strings can be added to the text found between HTML element tags and within attribute assignments via interpolation. Template expressions are used to generate these strings.
The value of the component property will be set to the element property using Property binding in general. As a result, Property binding cannot be used to read or pull data from the target elements, or to run a method on the target element.
You can utilize the Event binding functionality to listen to specific events like mouse movements, keystrokes, and clicks. The target event name is specified within regular brackets on the left of an equal to (=) sign in Angular, while the template statement is specified on the right side within quotes (" ").
Data flows exclusively in one direction, from the models to the views, in one-way data binding. As previously stated, there are three types of one-way data binding in Angular: interpolation, property binding, and event binding. Value transfers from a component's property to the target element's property in Property Binding.
This concludes the article. We hope you found this helpful and that it adds to your knowledge. If you want to learn more about Angular, check out the Angular Course training by A2N Academy. This course will teach you all you need to know about Angular and guide you through the process of mastering the language.