JScript .NET

JScript .NET is a programming language for the .NET framework developed by Microsoft as proprietary software. It is the next-generation version of JScript, and the two differ in several ways. Plain JScript is a scripting language run without compiling, while the JScript .NET command-line compiler relies on the .NET Common Language Runtime and compiles code to Common Intermediate Language before it runs, although runtime interpretation through the Function constructor or eval is still supported. JScript is built on ActiveX and Component Object Model technologies, whereas JScript .NET uses the .NET framework for the same jobs and keeps ActiveX access through COM Interop for backward compatibility. It lets a developer add type information to variables and functions, which older JScript does not, can produce standalone executables and assemblies that still need the .NET framework, and needs no main function. It has received little attention from the media and developers, is not supported in Visual Studio .NET, and is available as a scripting language only for ASP.NET, so Internet Explorer and browser scripting still use the older JScript engine.