javascript - Difference between angular 4 and 6 - Stack Overflow

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Are there any features in Angular 4 that are now obsolete in Angular 6? Or in other words can I use angular 6 library in my application and use all of Angular 4 functionalities in it. I'm new to Angular framework and just wondering should I start with Angular 6 directly or should I first read Angular 4.

Are there any features in Angular 4 that are now obsolete in Angular 6? Or in other words can I use angular 6 library in my application and use all of Angular 4 functionalities in it. I'm new to Angular framework and just wondering should I start with Angular 6 directly or should I first read Angular 4.

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Share Improve this question Follow edited Oct 15, 2018 at 11:21 RBT 26k2323 gold badges175175 silver badges260260 bronze badges asked Oct 15, 2018 at 11:18 Mohammed KhanMohammed Khan 19722 silver badges99 bronze badges 5

• It largely depends on the library itself. Angular 6 uses rxjs 6, which is a major (inpatible) change. You may check what is different between angular 4 and 5, then 5 and 6. – briosheje Commented Oct 15, 2018 at 11:21
• 1 You can use update.angular.io . Hope it helps. – Cata John Commented Oct 15, 2018 at 11:22
• 1 Hi and wele to Stack Overflow. You can check the changes between versions on update.angular.io – Roy Commented Oct 15, 2018 at 11:23
• @CataJohn Haha, GMTA – Roy Commented Oct 15, 2018 at 11:23
• @Roy Haha, at the exact same time as well:D – Cata John Commented Oct 15, 2018 at 11:56

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Depending on the functionalities that your app has. The differences from Angular 2 to Angular 6 are very small, the main difference was made between Angular 1 or now known as AngularJS and the new Angular (2-6). The differences between all Angular versions are insignificant to the general developer, as they are very small, or there are new ways of doing things, but 99% of the old ones also work.

Actually there differences of deprecated classes/methods..etc and new ones replacing them. You do NOT need to start with Angular 4 since 6 is not that different except the upgrade like the HTTPClient API for example. If you want to know the difference between version 4.0 (first 4) and version 6.1 (latest 6 at this time) then go to the official upgrade site

https://update.angular.io

and select the versions and Advanced and see the changes needed on any app running on 4. Most notable change is rxjs 6. Also, the old APIs still work by the way.

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