[divby0]

This is a very cool app. how did you implement the `steps`. i meant how exactly the state is saved for the entire program?

[zubairq]

Thanks. To implement the steps I take the Javascript source code, then I use Esprima to parse the code and insert Javascript lines to trace the variable values:

http://esprima.org/

The code is open source and available on Github too:

https://github.com/zubairq/appshare