Angular’s Two-Way Data Binding: A Comprehensive Guide

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Two Way Data Binding in Angular

Two Way Data Binding in Angular

Two way data binding is a key concept in Angular that allows changes in the model (data) to be automatically reflected in the view, and changes in the view to be automatically reflected in the model. This means that when data is updated in one place, it is automatically updated in the other place as well.

Two way data binding in Angular is achieved using the ngModel directive. The ngModel directive binds the value of an input element to a property on the model. When the value in the input element changes, the property in the model is updated, and vice versa.

For example, consider a simple form with an input element bound to a variable in the component:

In this example, the value of the input element is bound to the variable “name” in the component. When the user types in the input field, the value of the “name” variable is automatically updated. Likewise, if the value of the “name” variable is changed programmatically in the component, the value of the input field is automatically updated.

Two way data binding in Angular makes it easy to create reactive and interactive applications, where data is always in sync between the model and the view. It simplifies the process of building dynamic and interactive user interfaces, and helps to create a seamless user experience.

Overall, two way data binding is a powerful feature of Angular that helps to simplify data synchronization between the model and the view, and makes it easier to build interactive and responsive applications.