JSPython is a python-like syntax interpreter implemented with javascript that runs entirely in the web browser and/or in the NodeJS environment.

Disable some JavaScript methods (i.e. window.eval) and properties accesses ( i.e. cookie read/write). Attempts to Safe login and registration by blocking external requests. Gives feedback to user about page's attempts to execute document.cookie and window.eval.

Mimic eval in given context

Simple calculator by using eval function.