Description: Change detection in Angular is a fundamental mechanism that determines when and how the view is updated in response to changes in the data model. This process is essential for maintaining synchronization between the user interface and the application state. Angular employs a change detection approach to optimize the performance and efficiency of web applications. When a change occurs in the model, Angular evaluates the properties of components and their dependencies to determine if the view needs to be updated. This mechanism is based on a detection cycle that is triggered by events such as user interactions, service responses, or timers. Angular implements different change detection strategies, such as the default change detection and ‘OnPush’ change detection, which further optimizes performance by reducing the number of necessary checks. Angular’s ability to manage change detection efficiently is one of the reasons it has become a popular framework for modern web application development, allowing developers to easily create reactive and dynamic user interfaces.
