#JavaScript

I have a web application and one of the CSP pages contains the following snippets:

<script language='javascript'>
function SubmitForm(pid,sid) {
//code to process form

alert ("study saved");

self.document.location="newpage.csp";

}

Hi all,
We have a session values in a cache method and need to get those values in a client method (JavaScript).

Eg :
ClassMethod Method1()
{
Set %session.Data("Param1")="Data 1"
}

ClientMethod onloadHandler [Language = javascript]
{
var ret = zenPage.getSessionValues();
}

ClassMethod getSessionValues() As %String [zenMethod]
{
Set Data = $G(%session.Data("Param1"))
Quit Data
}

Does someone knows if any Studio version or, if in its new versions, it will be able to recognize new Javascript statements like arrow function, let, const etc ?

I started to get the following error when trying to save HTML and js files after editing in VSCode. This used to work fine, csp still works too.

ERROR #16006: Document 'xxx.html' name is invalid

Is there now a setting that I am missing? I did check but saw nothing that was obviously wrong.