Revision as of 06:18, 30 April 2013 by Hardmath123 (talk | contribs) (→‎PHP: js)

The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.

This article is about programming languages in general. For the project type, see Programming Language (Project Type).

A programming language is a set of rules and functions that let us use a computer. Programming languages are designed to make it easy for humans to write complex instructions. They function a lot like human languages: they have explicit grammars and a primitive vocabulary. Scratch is a programming language.

Syntax and grammar

Programming languages relevant to Scratch


Squeak was used to program the 1.x series of Scratch. It is a simple language designed to be human-readable and concise. See Squeak Tutorial for a simple introduction.


Adobe's Flash was used to program Scratch 2.0. It is programmed in ActionScript, which was based on ECMAScript.


Python is a simple interpreted scripting language that is used in the Scratch 2.0 back-end (server-side code). The forums run on DjangoBB, a Python library. Python is also used in many Scratch add-ons, including Kurt.


PHP is another server-side language which was used to build the Scratch 1.x server system (ScratchR).


JavaScript is a scripting language based on ECMAScript. It is used to add interactivity to webpages. Snap! is written in JavaScript, as is the front-end of the Scratch website.