What is the main difference between ionic 3 and ionic 4

Question

I know ionic 3 and about to start a new project app in ionic.so whether i should continue with ionic 3 or i can go with ionic 4.if i will go with ionic 4 then what feature i can get more than ionic 3.

Answer 1

Some differences that I remember:

Ionic 3:

• Based on Angular 2
• Have own file structure and style guide
• Don't use Angular CLI
• Uses own routing system

Ionic 4:

• Based on Angular 7 (and should support Angular 8 soon)
• Follows Angular style guide for file structure and coding style
• Uses Angular CLI
• Uses Angular Router

You can see the release article on Ionic Blog: https://ionicframework.com/blog/introducing-ionic-4-ionic-for-everyone/

My opinion about Ionic

IMO, the main difference is that Ionic 3 is abandoned (and it was abandoned almost one year from Ionic 4 release), and have a lot of bugs.

The last release of Ionic 3 was on 8/Nov/2017 while 4.0 was released on 23/Jan/2019, more then a year without updates.

This shows that Ionic Team don't care about it. A lot of developers like me had to workaround a lot of bugs for this period, and rewrite the whole code for 4.0.