JScript

What Does JScript Mean?

JScript is a popular object-based scripting language from Microsoft based on the ECMA standard. JScript is an interpreted language that is executed without a preliminary compilation.

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JScript is also known as classic script or active scripting JScript.

Techopedia Explains JScript

JScript was primarily designed for Web browsers that adhere to Windows Script. One of the major advantages of JScript is that it can be used as a Windows Script engine because it can be plugged in to any Windows application such as Internet Explorer, Active Server Pages and Windows Script Host. In JScript it is not necessary to declare the data types of variables explicitly so it is also called a loosely typed language because it is able to convert numbers into text and perform other automatic conversions.

JScript was first implemented in 1996 with Internet Explorer version 3.0. The latest version of JScript is 5.8 released with Internet Explorer version 8.0.

JScript has limited support for running scripts because it always requires an interpreter or host to be present while running scripts. An interpreter can be an active server pages (ASP), Internet Explorer, or Windows Script host.

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Margaret Rouse
Technology Expert

Margaret is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages.