Is there a way to get an event back from javascript to Delphi

WEB TMS WEB Core
1

Is there anyway to call an event from javascript back into Delphi ? I am using just a plain Web application, no FNC components or PWA, Electron or Miletus

2

I'm not sure I fully understand your question.
Do you mean something like AddEventListener() and call a Delphi proc from there?
This technique is used a lot in the WEB Core framework source code. Check in WEBLib.Controls.pas for example in the Core Source folder.

3

Thanks, that looks like it will do the trick. The only thing missing is the definition of the javascript event.

4

JavaScript can pass different objects. Either you know the type and define it in the param list or you define TJSEvent and cast to the correct object type.