What is two-way data binding in Angular?

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Two-way data binding in Angular is a powerful feature that allows synchronization between the component class and the template (view). When data changes in the component, the view is automatically updated, and when the user modifies data in the view (e.g., through an input field), the component is also updated accordingly—creating a seamless link between model and UI.

This is commonly used in form inputs and interactive elements. Angular uses the [(ngModel)] directive to implement two-way binding. This syntax combines both property binding ([ ]) and event binding (( )), which is why it’s called "banana in a box."

Behind the Scenes:

• [ngModel] binds the data from component to view.

• (ngModelChange) captures changes from the view and updates the component.

Benefits:

• Simplifies code in forms and user input handling.

• Maintains synchronization without writing separate logic for data updates.

Requirements:

To use [(ngModel)], you need to import the FormsModule from @angular/forms in your Angular module.

In summary, two-way data binding makes Angular applications more responsive and interactive by bridging the gap between logic and presentation efficiently.

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