Comparing the JS guide with the iOS and Android guides I see two absences:
1) Files
2) Facebook and Twitter users
May be that it's not possible to upload files or authenticate using OAuth using only the JS SDK, and without having and external server that secures the private keys?
We want to add both of these features. It will just require a slightly different design than the native mobile versions - files because there is no "binary" type in Javascript, and Facebook/Twitter users are different because integrating with other Javascript libraries is slightly less straightforward than integrating with other native libraries. They should both be possible, though, so stay tuned!
1) Files
2) Facebook and Twitter users
May be that it's not possible to upload files or authenticate using OAuth using only the JS SDK, and without having and external server that secures the private keys?