Hey,
ich just played with web2.0 WebSDK to get my Controls to the next level 
When using triggerServerEvent, Xojo stopps debugging and gives me an “EventLoop”.
It seems like this event doesn’t even get through to the “ExecuteEvent”.
The only Code there is:
// This event will fire if you call "this.triggerServerEvent" in your javascript code
// Return True to indicate that your code handled the event
System.DebugLog(name + " - " + parameters.ToString)
return true
And I have a Breakpoint on “System.DebugLog”, but that Event does never fire.
In the Browsers-JavascriptConsole I get an Error 404:
http://127.0.0.1:8080/B2734C627DB79CDF335BE14A32CBDECC7B5E1C1693B0B70CE21E83293060A7D1/comm/event/TgsRZw.headlineChanged
TgsRZw is the correct ControlID, headlineChanged is my EventName.
Browser-Side I’m calling it with:
that.triggerServerEvent("headlineChanged", "{data: " + encodeURIComponent(ed.bodyElement.innerHTML) + "}", true)
Is there anything I am missing?
Marius
Ok,
I found, that I have to use XojoWeb.JSONItem instead of just using “{}”. But this results in an internal Event-Loop inside the IDE??? 
Are you still returning true in ExecuteEvent ?
Yes, of course. But it is not important, what you return if the Events doesn’t fire
Ohh, just because this isn’t obscure enough for an saturday evening in the office…
When you put some urlencoded text in the Javascript
var data = "test test test";
var js = new XojoWeb.JSONItem;
js.set("data", encodeURIComponent(data));
this.triggerServerEvent("headlineChanged", js, true);
Then in Xojo->ExecuteEvent:
System.DebugLog(parameters.ToString)
I get:
{“data”:“test%26nbsp%3B+%26nbsp%3B+%26nbsp%3Btest%26nbsp%3B+%26nbsp%3Btest”}
So my second project I worked at after coming from 2019r3 to an actual release and is the second time, Xojo magically changes some data.
From
test test test
to
test + + test + test
just without doing anything
Is that 2021r3.1 or Web2 actually released beta software? Or is just nobody working wit Xojo?
Or is there any reason why Xojo internally changes “%20” to “+”. Or asked differently: Is there any reason why - in the last time - I put data into variables and get other values back? Is this a new way of programming I missed?
See my post regarding WebPopup. In the example, it forces the pop-up selection changed event to fire when the index is changed programmatically (selection changed event currently broken otherwise in 2021r3.1). There’s a demonstration how to use the JsonItem object with JavaScript. JsonItems handle string encoding, so you should not be having to encode anything with URLEncode. A JSON object in JavaScript can natively read any (properly formatted - handled by JSONItem class in Xojo) JSON string as any other string.
Ok, but wht if my String is %20%20%20 because I really like %20 and I want to use it within my Control. and let’s say it is just %20 no encoding. Because %20 is my personal word for “i love you”.
So my wife gets a message with + (my personal code for “I hate you”). Perhaps we can agree, this is not the best way to deal with mit data.