Dear devs：
I'm sorry to disturb you about a question about SandBox in both
aos/ios.
In some case, developer need a global Object to save/share something
for different pages with JS callback，which can not save to Native
SharedPreference.
*1.In sandBox mode, is there a global Object for mounting?*(It looks
none, from the doc on website :
*In particular, the Vue variable are different in each pages, and even
the "global" config of Vue (Vue.config.xxx) only affect the single page on
Weex.*
Android SDK can switch to *unuse sandbox mode*, but IOS SDK looks
none.
*2.IOS is not just like Android，which is without the selection
of isSandBox.*
Little understand in C++ sandBox. If you have free time，give me some
pointers，plz.
Thanks!
