Two-way Data Binding in Angular

If there was one feature in AngularJS that made us go “Wow”, then it was probably its two-way data binding system. Changes in the application state have been automagically reflected into the view and vise-versa. In fact, we could build our own directives with two-way data bound scope properties, by setting a configuration value. Angular >= 2.x doesn’t come with such a (built-in) two-way data bindi