[Promotion-technology] Fwd: Announcing Interactive JScript
David Andrews
dandrews at visi.com
Thu Feb 7 21:09:15 CST 2008
>
>Now available at
>http://www.EmpowermentZone.com/ijs.zip
>
>Interactive JScript
>Version 1.0
>February 7, 2008
>Copyright 2008 by Jamal Mazrui
>Modified GPL License
>
>I have wanted to build a JScript .NET interpreter. I recently found an
>article with code by Andrew Norris that got me started:
>
>"A Simple JavaScript Command Line Interpreter for Windows in JScript.Net"
>http://listeningtoreason.blogspot.com/
>The original code has now been rewritten and extended considerably.
>
>Interactive JScript (IJS) is a console mode environment that can
>dynamically execute code in the JScript .NET language. The source code is
>in a single file, ijs.js. a batch file, build.bat, calls the JScript
>compiler, jsc.exe, which is distributed with the .NET Framework. The
>resulting executable, ijs.exe, is about 40K in size. It may be run from
>any directory on a computer that has the .NET Framework 2.0 (or above)
>installed.
>
>IJS may be used to run or test code in either standard JavaScript or the
>enhanced Microsoft JScript 8.0, which also serves as the script language
>for web development with ASP.NET. The home page of the language is at
>http://msdn2.microsoft.com/en-us/library/72bd815a(VS.80).aspx
>
> For example, a .js file can define a sophisticated snippet that may be
>invoked with the Alt+V command of the EdSharp editor, available at
>http://www.EmpowermentZone.com/edsetup.exe
>
>JScript code can also be evaluated by IronCOM, a COM server that provides
>traditional Win32 applications with access to functionality of the .NET
>Framework, available at
>http://www.EmpowermentZone.com/comsetup.exe
>
>The HomerKit library for JAWS
>http://www.EmpowermentZone.com/kitsetup.exe
> includes a function called JSEval that wraps a JScript call via IronCOM,
>thereby enabling JAWS scripts to make .NET calls for functionality not
>available in the native scripting language.
>
>IJS may also be helpful for programming in .NET languages other than
>JScript. Built in commands are defined for inquiring about available
>methods, properties, and events via reflection. You can explore an object
>model, test expressions, save working code, and then convert it to the
>syntax of another .NET language.
>
>Reflecting on a COM object requires that a DLL be registered on the
>computer, described in the article
>"Inspect COM Components Using the TypeLib Information Object"
>http://msdn.microsoft.com/msdnmag/issues/1200/TypeLib/
>
>Registering this DLL (included in the archive) may be done at a command
>prompt as follows:
>RegSvr32 TlbInf32.dll
>Installing EdSharp does this automatically, and makes IJS conveniently
>available with the Go to Environment command, Control+Shift+G.
>
>IJS works well with a screen reader, since new output to the console is
>automatically read. Periodically, the cls command is useful for clearing
>the screen and eliminating extra verbiage. IJS may also be used as a
>simple, speech-friendly calculator, since most algebraic, trigonometric,
>and date calculations may be done with JScript.
>
>Below is the online documentation, available by entering the help command
>in Interactive JScript. Questions, comments, or code contributions are
>welcome.
>
>Jamal
>
>Type a JScript statement, followed by Enter
>(a closing semicolon is not needed).
>Use UpArrow to repeat a command.
> End a line of input with a space and underline ( _) to continue
>a multiline block of code.
>The prompt then changes from a > to _ character.
>
>Most classes of the .NET Framework 2.0 may be used in expressions.
>Variable types are inferred.
>To ease typing, the following namespaces are imported
>(there classes may be referenced without a namespace prefix):
>Microsoft.VisualBasic
>System
>System.Collections
>System.Data
>System.Diagnostics
>System.IO
>System.Reflection
>System.Text
>System.Windows.Forms
>
>In addition, the following built-in commands are available:
>quit = end this program
>cls = clear the screen
>eval FileName = execute a JScript file
>eval clipboard = execute JScript code on the clipboard
>cmd = pass any statement to the Windows command interpreter (cmd.exe)
>dos = execute a console-mode command and display its output
>log FileName = log output to a file
>log off = suspend logging
>log on = continue logging
>net Object = list members of a .NET object
>constructors Object = list its constructors only
>events Object = list its events only
>fields Object = list its fields only
>methods Object = list its methods only
>properties Object = list its properties only
>com Object = list members of a COM object
>dir Object = directory of members of either a .NET or COM object
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