Microsoft JScript:

The Microsoft version of JavaScript, JScript is a scripting language based on the ECMA-262 standard. JScript is specifically targeted for the Internet and built into Internet Explorer browsers. The JScript interpreter processes source code embedded directly in the HTML. JScript code does not produce stand-alone applets, but it is used to add interactivity to HTML documents. JScript uses syntax and language features similar to the Java, C, and C++ programming languages.

See also:

JScript Language Reference in "Chapter 5: Developer’s Reference"

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