Visual Studio Code is a programming IDE for many languages and now also thanks to an extension by Cebe74 the Locomotive Basic with syntaxic coloring, renumbering and running thanks to CPCBasic Unchained by Marco Vieth directly inside VSC.

CPCBasic Unchained is an interpreter of Basic Locomotive written in javascript, so you can add it on a web site if you wish.

There is another possibility to write Locomotive Basic programs : using CPC Basic 3 by Dinoneno which I wrote about earlier. There is a forum about CPC Basic 3.