" Something in a language that is more optimisable and works everywhere, like Lua with C extensions, or OCaml, or Java. JavaScript is hard to get predictable performance from and HTML is extremely complex,"
React Native is not based on WebViews/HTML. It uses a virtual DOM on top of native views:
"React builds and maintains an internal representation of the rendered UI. It includes the React elements you return from your components. This representation lets React avoid creating DOM nodes and accessing existing ones beyond necessity, as that can be slower than operations on JavaScript objects. Sometimes it is referred to as a "virtual DOM", but it works the same way on React Native."
This is quite different from similar Javascript based efforts such as Cordova.
http://componentkit.org/
" Something in a language that is more optimisable and works everywhere, like Lua with C extensions, or OCaml, or Java. JavaScript is hard to get predictable performance from and HTML is extremely complex,"
React Native is not based on WebViews/HTML. It uses a virtual DOM on top of native views:
https://facebook.github.io/react/docs/optimizing-performance...
"React builds and maintains an internal representation of the rendered UI. It includes the React elements you return from your components. This representation lets React avoid creating DOM nodes and accessing existing ones beyond necessity, as that can be slower than operations on JavaScript objects. Sometimes it is referred to as a "virtual DOM", but it works the same way on React Native."
This is quite different from similar Javascript based efforts such as Cordova.