History and different versions of Angular

The first version of Angular was Angular1.0 (also known as AngularJS) which was released in 2010. But here, we are talking about Angular so; let's see history and different versions of Angular.

Angular2

Angular 2.0 was first introduced in October 2014. It was a complete rewrite of Angular so, the drastic changes in the 2.0 version created controversy among developers. On April 30, 2015, the Angular developers announced that Angular 2 moved from Alpha to Developer Preview and then Beta version was released in December 2015. Its first version was published in May 2016 and the final version was released on September 14, 2016.

Angular4

Angular 4 version was announced on 13 December 2016. The developers skipped the version 3 due to some confusion. Its final version was released on 23 March 2017.

This version has some additional features:

This version introduced HttpClient, a smaller, easier to use, and more powerful library for making HTTP Requests.
It provides new router life cycle events for Guards and Resolvers. Four new events: GuardsCheckStart, GuardsCheckEnd, ResolveStart, ResolveEnd join the existing set of life cycle event such as NavigationStart.
It provides the support of conditionally disable animations.

Angular5

This version was released on 1 Nov, 2017. It provided some improvements to support for progressive web apps, also provides improvements related to Material Design.

Angular6

This version was released on 4 may, 2018. It was a major relaese which provides some features like: ng update, ng add, Angular Elements, Angular Material + CDK Components, Angular Material Starter Components, CLI Workspaces, Library Support, Tree Shakable Providers, Animations Performance Improvements, and RxJS v6.