New script | Script list

ProcessingDB is a software development tool for JavaScript and HTML which provides:

• a browser-based code editor which allows you to save and run your code
• the ability to save and publish of all versions of your code
• support for dependency management and deployment

Concepts

Scripts

• Every piece of code stored in ProcessingDB is referred to as a "script".
• Each script has an id number, and each script version has a revision number.
• When a script is saved, its revision number is incremented.
• All script versions are published at URLs of the form processingdb.org/edit/scriptId.revisionNumber.
  • For example, http://processingdb.org/edit/4.2 edits the script whose id is 4, revision number 2.

Modules

• ProcessingDB supports require and exports from CommonJS Modules.
  • Modules can be required using the syntax var foo = require('foo').
  • Modules define their exported API by adding properties to an exports object.
• Each module in ProcessingDB has a unique name, say moduleName.
• A script declares itself to be a module by using the directive @module moduleName.

Templates

• Templates are HTML pages with placeholders of the form ${parameterName}.
  • Parameter values are passed in from applications which use the template.
  • ${code} is a special placeholder which gets replaced by application code bundled with its dependencies.
• Each template in ProcessingDB has a unique name, say templateName.
• A script declares itself to be a template by using the directive @template templateName.

Applications

• Applications are scripts which can be run.
• Applications can depend on modules using require, just like modules can.
• When an application is run, it is bundled with its dependencies and embedded into a template.
  • Module and app code is bundled together based on this compilation strategy from the CommonJS Wiki
• A script declares itself to be an application by using the directive @app template templateName.
• Applications can pass parameters to the template using directives of the form @app parameterName value.

Examples

• The CommonJS math example has been imported to ProcessingDB:
  • The math module
  • The increment module
  • The minimalHTML template
  • The incrementTest application