In this post, we will outline the features of VBScript, which stands for Visual Basic Scripting and is a subset of Visual Basic for Applications (VBA), a Microsoft product integrated not only into Microsoft software like MS Project and MS Office but also into third-party tools like AUTO CAD.
**Features of VBScript:**
1. **Lightweight:** VBScript is a lightweight scripting language with a rapid interpreter.
2. **Case Insensitive:** VBScript is predominantly case insensitive, featuring a straightforward syntax that is easy to learn and implement.
3. **Object-Based:** Unlike languages like C++ or Java, VBScript is an object-based scripting language, not an Object-Oriented Programming language.
4. **COM Usage:** It utilizes the Component Object Model (COM) to access elements within the execution environment.
5. **Host Environment:** VBScript requires a host environment for successful execution, such as Internet Explorer (IE), Internet Information Services (IIS), and Windows Scripting Host (WSH).
**VBScript Version History and Uses:**
VBScript was introduced by Microsoft in 1996 with its first version, 1.0. The current stable version is 5.8, available with IE8 and Windows 7. VBScript has a wide range of applications, including:
1. **Automation Testing:** It is used in popular automation testing tools like Quick Test Professional (QTP).
2. **Windows Automation:** Windows System administrators use VBScript within Windows Scripting Host to automate Windows Desktop tasks.
3. **Web Development:** Active Server Pages (ASP), a server-side scripting environment for dynamic webpages, employs VBScript or JavaScript.
4. **Client-Side Scripting:** VBScript is used for client-side scripting in Microsoft Internet Explorer.
5. **Microsoft Outlook Forms:** VBScript is commonly used in Microsoft Outlook Forms, with application-level programming relying on VBA in Outlook 2000 onwards.
**Disadvantages:**
1. **Browser Compatibility:** VBScript is only supported by Internet Explorer, as other browsers like Chrome and Firefox do not support it. JavaScript is often preferred for broader compatibility.
2. **Limited Command Line Support:** VBScript has limited command line support.
3. **Debugging Challenges:** The absence of a default development environment makes debugging in VBScript more challenging.
**Current Status of VBScript:**
The current version of VBScript is 5.8. With the development of the .NET framework, Microsoft has chosen to support VBScript within ASP.NET for web development. As a result, there won’t be any new versions of the VBScript engine, but Microsoft’s Sustaining Engineering Team is addressing defect fixes and security issues. VBScript will continue to be shipped as part of all Microsoft Windows and IIS installations by default.