If you want to install JavaScript in VSCode, install Visual Studio Code & Node.JS, create and run a JavaScript program, and then take these steps.

Welcome to the brave new world of modern, remote development in your browser. Let's get started with VSCode.dev.

A library agnostic fork of vscode-lit-html which aim is to bring syntax highlighting and language support for HTML inside of any JavaScript and TypeScript tagged template strings. Important: ...

This is useful when someone is using the app as a standalone html document rather than inside a notebook. Unfortunately none of these options seem to work when running the code through a notebook ...