When comparing Weex vs Ionic Framework, the Slant community recommends Ionic Framework for most people. In the question“What are the best frameworks for developing cross-platform mobile apps?” Ionic Framework is ranked 5th while Weex is ranked 8th. The most important reason people chose Ionic Framework is:
Large quantity of plugins to access native APIs without code nothing in native language.
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Pros
Pro You can use common front-end stack
Use HTML, CSS and JS to build interfaces.
Pro Cordova plugins
Large quantity of plugins to access native APIs without code nothing in native language.
Pro Large, friendly and active community
Ionic Framework is currently one of the most popular frameworks for hybrid mobile app development. This has resulted in a very large community of active users who contribute to the community by writing tutorials and answering questions.
Pro Free and open source
Ionic is free to use and open source, resulting in an active and helpful community of users and contributors.
Cons
Con No clear path for starting a new project
Con Can be buggy
Ionic is still a young framework (version 1.0 was released in May 2015). There are still some quirks and bugs in the framework to work out, which you can see a list of on their Github.
However Ionic is under active development and bugs are generally addressed quickly.