Chrome Testbed

[The Professor]

http://d21c.com/leprofesseur/pc-testbed.html

This is a good testbed that I've used for years. The problem now is that on Microsoft Edge or Chrome you lose your coding by using the back button after viewing the coding results unles you copied it prior to viewing it.

This version
http://d21c.com/leprofesseur/chrome-tesbed.html

eliminates that problem by opening a new window to show the code results. Closing that window returns you to the testbed code intact.