JavaScript OSA, (originally JavaScript for OSA, abbreviated as JSOSA), is a freeware inter-process communication scripting language for the Macintosh computer. This article is about freeware which is available gratis. ... Inter-process communication (IPC) is the exchange of data between one process and another, either within the same computer or over a network. ... Scripting programming languages (commonly called scripting languages or script languages) are computer programming languages designed for scripting the operation of a computer. ... Macintosh, also known as Mac, is a family of personal computers manufactured by Apple Computer, Inc. ...

JavaScript OSA uses the "core language" of the Mozilla implementation of the JavaScript programming language. The language is used as an alternative to the AppleScript language. Its use is unrelated to web browser-based scripting. It can be seen as having a similiar function to Microsoft's JScript .NET language on Window's machines, although there is no interoperability between the two languages' system-level scripting. Mozilla (a. ... JavaScript, often mistyped as Javascript, is an object-oriented scripting language based on the concept of prototypes. ... A programming language or computer language is a standardized communication technique for expressing instructions to a computer. ... AppleScript is a scripting language devised by Apple Computer, and built into Mac OS. More generally, AppleScript is the word used to designate the Mac OS scripting interface, which is meant to operate in parallel with the graphical user interface. ... A web browser is a software package that enables a user to display and interact with documents hosted by web servers. ... Microsoft Corporation, (NASDAQ: MSFT) headquartered in Redmond, Washington, USA, was founded in 1975 by Bill Gates and Paul Allen. ... JScript . ...

The language is identical to Mozilla's core language, with extensions added via a "Core" object and a "MacOS" object. The MacOS object has methods for obtaining objects that are binded to applications. This is done via the AppleEvent messaging system, a part of the Macintosh's Open Scripting Architecture. Application has the following meanings: In general, an application is using something general to some more conrete. ... Apple Events are the canonical high-level interprocess communication mechanism in Mac OS, first appearing in System 7 and supported by every version since then, including Mac OS X. The starting point is a dynamically-typed, extensible descriptor format called an AEDesc, which is just an OSType code specifying the...

The language was first released in 2001, and was bundled with Late Night Software's flagship product, Script Debugger. In May of 2005, a new "alpha" version of the language was made available for testing. The company has reported that this improved second version of the language will eventually be bundled with version 4 of Script Debugger. 2001 is a common year starting on Monday of the Gregorian calendar. ... 2005 is a common year starting on Saturday of the Gregorian calendar. ...

Critisism

As of May, 2005, JSOSA is missing some features that AppleScript supports. These would include: May is the fifth month of the year in the Gregorian Calendar and one of seven Gregorian months with the length of 31 days. ... 2005 is a common year starting on Saturday of the Gregorian calendar. ...

• Support for object-filtering, referred to in AppleScript as support for the "whose clause".

External Links

• Late Night Software (http://www.latenightsw.com)
• Current release version of JavaScript OSA (http://www.latenightsw.com/freeware/JavaScriptOSA/index.html)
• An "alpha" release of JSOSA, version 2.0 (http://www.latenightsw.com/freeware/JavaScriptOSA/jsosa2.html)