JScript .NET is a .NET programming language developed by Microsoft. The primary differences between JScript and JScript .NET can be summarized as follows: Firstly, JScript is a scripting language, and as such programs (or more suggestively, scripts) can be executed without the need to compile the code first. This is not the case with the JScript .NET command-line compiler, since this next-generation version relies on the .NET Common Language Runtime (CLR) for execution, which requires that the code be compiled to Common Intermediate Language (CIL), formerly called Microsoft Intermediate Language (MSIL), code before it can be run. Nevertheless, JScript .NET still provides full support for interpreting code at runtime (e.g., via the Function constructor or the eval function) and indeed the interpreter can be exposed by custom applications hosting the JScript .NET engine via the VSA interfaces. Secondly, JScript has a strong foundation in Microsoft's ActiveX/COM technologies, and relies primarily on ActiveX components to provide much of its functionality (including database access via ADO, file handling, etc.), whereas JScript .NET uses the .NET Framework to provide equivalent functionality. For backwards-compatibility (or for where no .NET equivalent library exists), JScript .NET still provides full access to ActiveX objects via .NET / COM Interop using both the ActiveXObject constructor and the standard methods of the .NET Type class. Although the .NET Framework and .NET languages such as C# and Visual Basic .NET have seen widespread adoption, JScript .NET has never received much attention, by the media or by developers. It is not supported in Microsoft's premier development tool, Visual Studio .NET. However, ASP.NET supports JScript .NET. Language differences The following are prime examples of language differences between JScript .NET and other .NET languages, including comparisons. Differences with C# JScript .NET does not require a main() function that the operating system must call directly when executing a JScript .NET application, as such, JScript .NET program flow can be based on global code. JScript .NET, because of its very loose type checking system can be very easy to learn, since the convention of explicit type declaration is not required at all. JScript .NET does not require explicit references to the .NET Framework Base Class Library, as certain functions found in earlier versions of JScript are present in JScript .NET (e.g. functions for finding the tangent of an angle for a right triangle). JScript .NET is closely linked to C syntax, and is thus very