VBScript (short for Visual Basic Scripting Edition) is an Active Scripting language, developed by Microsoft, which uses the Component Object Model to access elements of the environment within which
it's running (e.g. FileSystemObject or FSO used to create, read, update and delete files).
The language's syntax reflects its origins as a limited variation of Microsoft's Visual Basic programming language.
VBScript has been installed by default in every desktop release of Microsoft Windows since Windows 98; as part of Windows Server since Windows NT 4.0 Option Pack;
and optionally with Windows CE (depending on the device it is installed on).
A VBScript script must be executed within a host environment, of which there are several provided with Microsoft Windows, including: Windows Script Host (WSH), Internet Explorer (IE),
Internet Information Services (IIS). Additionally, The VBScript hosting environment is embeddable in other programs, through technologies such as the Microsoft Script control (msscript.ocx).
VBScript began as part of the Microsoft Windows Script Technologies, which were launched in 1996, initially targeted at web developers. During a period of just over two years,
the VBScript and JScript languages advanced from version 1.0 to 2.0, and over that time it gained support from Windows system administrators seeking an automation tool more powerful
than the batch language first developed in the late 1970s.
In version 5.0, the functionality of VBScript was increased with new features such as: regular expressions; classes; the With statement; the Eval, Execute, and ExecuteGlobal functions
to evaluate and execute script commands built during the execution of another script; a function-pointer system via GetRef, and Distributed COM (DCOM) support.
In version 5.5, SubMatches were added to the regular expression class in VBScript, to finally allow VBScript script authors to capture the text within the expression's groups.
That capability before was only possible through JScript.
With the advent of the .NET framework, the scripting team took the decision to implement future support for VBScript within ASP.NET for web development, and therefore no new versions of the
VBScript engine would be developed and it moved over to being supported by Microsoft's Sustaining Engineering Team, who are responsible for bug fixes and security enhancements.
For Windows system administrators, the suggestion is that they migrate to using Windows PowerShell.
However version 5.6 of the scripting engine will continue to be shipped with future releases of Microsoft Windows and IIS.
reference by wikipedia.org
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