Visual Studio developers now get IntelliCode for XAML and C++ code, in addition to C#. Visual Studio Code developers can use IntelliCode when developing JavaScript, TypeScript, Python, and Java.

The latest preview of Visual Studio 2019 16.7 adds an experimental Razor editor for working with Blazor, boosting web development with C#/.NET instead of JavaScript.

Microsoft shipped Visual Studio 2019 version 16.1 with a host of new features and enhancements, led by an expansion of workloads that now support IntelliCode, the AI-assisted upgrade of IntelliSense.

So I create a Visual Studio .Net web form on a server and can get that to run just fine. I then switch to the html view of the page and try to add some javascript buttons using the <script> tags ...