What is AngularJS?

AngularJS is an open source JavaScript Framework to build dynamic web pages. AngularJS provides additional attributes to HTML tags and extends their functionality based on the attributes used, these attributes are called AngularJS directives.

AngularJS provides 2 way binding between the HTML view and the model, hence any changes made in the model will get reflected in the View and any changes made in the view will reflect in the model automatically, AngularJS takes care of updating the other side of the binding.

AngularJS provides a MVC Framework implementation in the client side, using AngularJS we can define Model, View and Controllers in the client side, MVC framework was earlier implemented only in server side using languages like Java, Asp.Net etc, AngularJS  extends this framework to the client side also.