How does data binding work in Angular?

How does data binding work in Angular?

• Data binding allows us to connect the data in our application’s components with the user interface (UI).
• It enables automatic synchronization of data between the component and the UI without the need for manual updates.
• This reduces the effort required to keep the UI and data in sync and improves overall development productivity.
• Data binding in Angular is bidirectional, meaning changes in the UI can also update the component’s data.
• There are three types of data binding in Angular: interpolation, property binding, and event binding.
• Interpolation allows us to dynamically embed values from the component into the HTML template using {{}} syntax.
• Property binding binds the value of a component’s property to a target element or directive property.
• It is denoted by square brackets [property]=”expression”.
• Changes in the component property automatically update the bound target element or directive property.
• Event binding allows us to respond to user actions, such as button clicks or mouse events, in the template.
• It is denoted by parentheses (event)=”expression”.
• When the specified event occurs, the associated expression in the component is executed.
• Angular uses zone.js to detect changes in the component’s data and update the UI accordingly.
• Zone.js is a library that hooks into asynchronous operations, such as setTimeout or XHR requests, to detect changes.
• When a data change is detected, Angular updates the affected part of the UI by re-rendering that portion of the template.
• Data binding in Angular can be one-way or two-way, depending on the binding type used.
• One-way bindings update data from the component to the UI or vice versa, but not both.
• Interpolation and property binding are one-way bindings.
• Two-way bindings synchronize data between the component and the UI in both directions.
• Event binding combined with property binding using the banana-in-a-box syntax ([()]) provides two-way binding.
• Changes in the UI can update the component’s data, and changes in the component’s data can update the UI.
• Overall, data binding in Angular simplifies the process of connecting the component’s data with the UI, ensuring a seamless and efficient user experience.