What is 2 way data binding in Angular Js?

In two way data binding data flows from "Scope/Controller" to "View/Markup" and vice varsa. in Scope data gets propagated to view and data modification propagated immediately and reflected in view. In view data gets propagated to scope and data modification propagated immediately and reflected in scope. usually performed through "ng-nodel"

ngmodel and interpolation

Update Model when View get change and vice versa. Synchronization between the model and the view.