Directives In Angular 2.0

There are three kinds of directives:

Component Directives – These will create reusable components by encapsulating logic in JavaScript, HTML or an optional CSS style sheet.

Decorator Directives – These directives will be used to decorate elements 

Example: Adding a tooltip, or showing/hiding elements using ng-show/ng-hide.

Template Directives – These will turn HTML into a reusable template. The instantiating of the template and its insertion into the DOM can be fully controlled by the directive author. 

Examples: include ng-if and ng-repeat.

ANGULAR 2 VS 1.X

1.  No more $scope
2.  No more controllers
3.  Component Based-UI
4.  1-way data flow
5.  ES6 / Typescript
6.  New built-in directives
7.  New DI system
8.  Performance
9.  Better Mobile Support
10.  Server side render e Native Script
11.  Embrace Flux and RxJS
12.  Change Detection System