This is a simple version of Forth written in javascript so it can run in the web browser.

Recently I joined the Facebook group FORTH PROGRAMMING / EARLY FORTH SYSTEMS & DEVELOPMENT. I have used and written many Forth style systems over the years. My first use of Forth was back in 1979, first on a Z80 and then an 8086. In honor of those early days, I use a 65536 Uint8array() to store the Forth code. There is a small switch statement in javascript that provides basic operations but much of the Forth compiler and interpreter are written in Forth and stored in the array.

This page has been written so that you can save it from your browser and run it from the disk on your computer. This allows you to edit and modify it. Nothing is hidden.