Registering Callbacks: There is no need to register callbacks . This makes your code simple and easy to debug. Control HTML DOM programmatically: All the application that are created using Angular never have to manipulate the DOM although it can be done if it is required Transfer data to and from the UI: Angular.js helps to eliminate almost all of the boiler plate like validating the form, displaying validation errors, returning to an internal model and so on which occurs due to flow of marshalling data No initilization code: With angular.js you can bootstrap your app easily using services, which auto-injected into your application in Guice like dependency injection style