Helpful Links
GeoGebra scripting produced by the GeoGebra Team
[url=https://wiki.geogebra.org/en/Scripting]Scripting overview from the GeoGebra Manual[/url][br][br][url=https://wiki.geogebra.org/en/Scripting_Commands]Scripting Commands from the GeoGebra Manual[/url][br][br][url=https://wiki.geogebra.org/en/Tutorial:Introduction_to_GeoGebraScript]GeoGebra Scripting Tutorial[/url]
Javascript programming and listeners produced by the GeoGebra Team
[url=https://wiki.geogebra.org/en/Reference:JavaScript]Javascript Reference Manual[/url]
Michael's API example of adding a listener - download and investigate
"External" scripting references
[url=https://www.slideshare.net/macloo/javascript-101-16754994]Slides showing javascript and python comparisons[/url]