In this video we will see how to integrate a javascript code into an “App inventor” application to validate an email and a password.
The technique involves using the WebViewer component as a javascript processor.
HTML file link:
https://drive.google.com/file/d/1Mo0IplvlYuMP2CK9Ux3S7JJeXVNZuIR7/view?usp=sharing

(when debugMode is TRUE) file:///mnt/sdcard/AppInventor/assets/file_name.html
(when debugMode is FALSE)
file:///android_asset/file_name.html