Open Source JavaScript Interpreters for Linux

KAREL 3D written in JavaScript with WebGL is a children's programming language for teaching algorithms. This is later variant from Karel the Robot in 3D, created in 1986 for 8bit microcomputer PMD 85-2. Support full recursion, create new commands, complex commands with condition from dialog and direct control with keys, language translation. Objects: brick, wall, mark, fence. Check out the Wiki (here) for more examples and pictures. Include ZIP with original historical manuals in Slovak language from years 1987 - 1990 Writen in HTML for fast universal use, including JavaScript code with Three engine. After download and unzip, runable (run html file) without installation in internet browser. Tested in EDGE and Chrome. Version without WebGL, and just as one file (+ include examples in text file): https://sourceforge.net/projects/karel-3d/ C++ version: https://sourceforge.net/projects/karel-3d-cpp/

As you may recall, a Turing-machine is an all-purpose computer. A Turing-machine has a memory that consists of a track or line of data. On the track, a read-/write-head is moving. The read-write head itself is a state engine, which is affected by the input from the track, and which decides what to write on the track, and where to read the next input, by "moving" the head back or forth. In 5050, the part of the track left of the head is represented not by a line or stack of information, but by a binary tree. The part right of the head is represented by a binary tree, too. The head itself sort of sits between the two trees, but will often change its state according to information from the right side of the left side. In 5050, the state of the head itself is again represented as a tree of commands, although for simple programs, a linear representation can be sufficient.