Hi,
The status of the EyeX SDK for JavaScript/Web is still work-in-progress. I really hope it can be released within the next 3 months, but cannot promise anything.
To help us to prioritize the right solution, it would be great to know your use case. For example: do you need to create something that works in a regular web browser, or are you using some sort of glue framework like Chromium Extension Framework or Awesomium?