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JScript
[ temporary import ]
please note:
- the content below is remote from Wikipedia
- it has been imported raw for GetWiki
{{Distinguish|JavaScript}}







factoids
| paradigm = | year = 1996| designer = | developer = Microsoft| latest_release_version = 9.0| latest_release_date = March 2011Dynamic typing>Dynamic, weak typing, duck typing>duck| implementations = Active Scripting, JScript .NET| dialects =| influenced by =| influenced =| operating system = Microsoft Windows| license =msdn.microsoft.com/library/hbxc2t98.aspx}}}}JScript is Microsoft's dialect of the ECMAScript standardWEB,weblink JScript (ECMAScript3), Msdn.microsoft.com, 2012-08-17, that is used in Microsoft's Internet Explorer.JScript is implemented as an Active Scripting engine. This means that it can be "plugged in" to OLE Automation applications that support Active Scripting, such as Internet Explorer, Active Server Pages, and Windows Script Host.WEB,weblink What Is WSH?, Msdn.microsoft.com, 2012-08-17, It also means such applications can use multiple Active Scripting languages, e.g., JScript, VBScript or PerlScript.JScript was first supported in the Internet Explorer 3.0 browser released in August 1996. Its most recent version is JScript 9.0, included in Internet Explorer 9.JScript 10.0What is JScript 10.0? is a separate dialect, also known as JScript .NET, which adds several new features from the abandoned fourth edition of the ECMAScript standard. It must be compiled for .NET Framework version 2 or version 4, but static type annotations are optional.

Comparison to JavaScript

As explained by Douglas Crockford in his talk titled The JavaScript Programming Language on YUI Theater, However, JScript supports conditional compilation, which allows a programmer to selectively execute code within block comments. This is an extension to the ECMAScript standard that is not supported in other JavaScript implementations, thus making the above statement not completely true, although conditional compilation is no longer supported in Internet Explorer 11 Standards mode.Other internal implementation differences between JavaScript and JScript, at some point in time, are noted on the Microsoft Developer Network.WEB,weblink The World of JScript, JavaScript, ECMAScript, Blogs.msdn.microsoft.com, 2017-10-21, Although, the default type value for the script element in Internet Explorer is JavaScript, while JScript was its alias.WEB,weblink script element, Msdn.microsoft.com, 2017-10-16, In an apparent transition from JScript to JavaScript, online, the Microsoft Edge Developer Guide refers to the Mozilla MDN web reference library as its definitive documentation.WEB,weblink Microsoft-Edge Dev-Guide, Docs.microsoft.com, 2017-10-18, As of October 2017, Microsoft MSDN pages for scripting in Internet Explorer are being redirected there as well.WEB,weblink Documenting the Web Together, Blogs.windows.com, 2017-10-18, This information may not include JScript specific objects, such as Enumerator, which are listed in the JavaScript language reference on Microsoft Docs.WEB,weblink Javascript Language Reference (Microsoft Docs), Docs.microsoft.com, 2017-10-18, Those provide additional features that are not included in the ECMA Standards, whether they are supported in the Edge browser or its predecessor.WEB,weblink JavaScript Objects (Microsoft Docs), Docs.microsoft.com, 2017-10-18,

Versions

JScript

The original JScript is an Active Scripting engine. Like other Active Scripting languages, it is built on the COM/OLE Automation platform and provides scripting capabilities to host applications.This is the version used when hosting JScript inside a Web page displayed by Internet Explorer, in an HTML application, in classic ASP, in Windows Script Host scripts and several other Automation environments.JScript is sometimes referred to as "classic JScript" or "Active Scripting JScript" to differentiate it from newer .NET-based versions.Some versions of JScript are available for multiple versions of Internet Explorer and Windows. For example, JScript 5.7 was introduced with Internet Explorer 7.0 and is also installed for Internet Explorer 6.0 with Windows XP Service Pack 3, while JScript 5.8 was introduced with Internet Explorer 8.0 and is also installed with Internet Explorer 6.0 on Windows Mobile 6.5.Microsoft's implementation of ECMAScript 5th Edition in Windows 8 Consumer Preview is called JavaScript and the corresponding Visual Studio 11 Express Beta includes a “completely new”, full-featured JavaScript editor with IntelliSense enhancements for HTML5 and ECMAScript 5 syntax, “VSDOC” annotations for multiple overloads, simplified DOM configuration, brace matching, collapsible outlining and “go to definition”.WEB,weblink What's New in ASP.NET 4.5 and Visual Web Developer 11 Beta: The Official Microsoft ASP.NET Site, WEB,weblink What’s New for ASP.NET 4.5 and Web Development in Visual Studio 11 Beta, {| class="wikitable" style="text-align: center;"! Version! Date! Introduced with{{citation |url=https://msdn.microsoft.com/en-us/library/s4esdbwz.aspx |title=Version Information (Windows Scripting - JScript) |publisher=Microsoft |accessdate=2010-05-31}}! Based on{{refn|JScript supports various features not specified in the ECMA standard,{{citation |url=https://msdn.microsoft.com/en-us/library/4tc5a343.aspx |title=Microsoft JScript Features - Non-ECMA (Windows Scripting - JScript) |publisher=Microsoft |accessdate=2010-05-31}} as does JavaScript.|group=note}}! Similar JavaScript version| 1.0| Aug 1996Internet Explorer 3>Internet Explorer 3.0| Netscape JavaScript| 1.0| 2.0| Jan 1997Internet Information Services>Windows IIS 3.0| Netscape JavaScript| 1.1| 3.0| Oct 1997| Internet Explorer 4.0Microsoft said JScript 3.0 was "the first scripting language to fully conform to the ECMA-262 standard".{{citation title=Microsoft Embraces ECMA Internet Scripting Standard; Delivers Industry's First ECMA-Compliant Scripting Language, JScript 3.0, In Key Microsoft Products date=1997-06-30weblink>archive-date=2009-01-12}}|group=note}}| 1.3| 4.0| Microsoft Visual Studio>Visual Studio 6.0 (as part of Visual InterDev)| ECMA-262 1st edition| 1.3| 5.0| Mar 1999| Internet Explorer 5.0| ECMA-262 2nd edition| 1.4| 5.1|| Internet Explorer 5.01| ECMA-262 2nd edition| 1.4| 5.5| Jul 2000| Internet Explorer 5.5 & Windows CE 4.2| ECMA-262 3rd edition| 1.5| 5.6| Oct 2001Internet Explorer 6>Internet Explorer 6.0 & Windows CE 5.0| ECMA-262 3rd edition| 1.5| 5.7| Nov 2006Internet Explorer 7>Internet Explorer 7.0JScript 5.7 includes an implementation of the ECMAScript Compact Profile (ECMA-327) which turns off features not required by the ES-CP when using the "JScript.Compact" ProgID.{{Citation neededgroup=note}}| 1.5| 5.8| Mar 2009Internet Explorer 8>Internet Explorer 8.0 & Internet Explorer Mobile 6.0JSON (RFC 4627)#fn 3>3| 1.5| 9.0| Mar 2011Internet Explorer 9>Internet Explorer 9.0 (64-bit)| ECMA-262 5th edition| 1.8.1JScript is also available on Windows CE (included in Windows Mobile, optional in Windows Embedded CE). The Windows CE version lacks Active Debugging.

JScript .NET

JScript .NET is a Microsoft .NET implementation of JScript. It is a CLS language and thus inherits very powerful features, but lacks many features of the original JScript language, making it inappropriate for many scripting scenarios.JScript .NET can be used for ASP.NET pages and for complete .NET applications, but the lack of support for this language in Microsoft Visual Studio places it more as an upgrade path for classic ASP using classic JScript than as a new first-class language.{| class="wikitable" style="text-align: center;"! Version! Platform! Date! Introduced with! Based onCommon Language Runtime>CLR 1.0 2002-01-05 Microsoft .NET Framework 1.0 ECMA-262 3rd edition{{refnurl=https://msdn.microsoft.com/en-us/library/xkx7dfw1(VS.71).aspx publisher=Microsoft}}name=dotnet}}Common Language Runtime>CLR 1.1 2003-04-01 Microsoft .NET Framework 1.1 ECMA-262 3rd editionCommon Language Runtime>CLR 2.0 2005-11-07 Microsoft .NET Framework 2.0 ECMA-262 3rd editionCommon Language Runtime>CLR 4.0 2010-08-03 Microsoft .NET Framework 4.0 ECMA-262 3rd editionJScript .NET is not supported in the .NET Compact Framework.{{citation needed|date=March 2012}}Note: JScript .NET versions are not related to classic JScript versions. JScript .NET is a separate product. Even though JScript .NET is not supported within the Visual Studio IDE, its versions are in sync with other .NET languages versions (C#, VB.NET, VC++) that follow their corresponding Visual Studio versions..NET Framework 3.0 and 3.5 are built on top of 2.0 and do not include the newer JScript.NET release (version 10.0 for .NET Framework 4.0).(Source: file version of jsc.exe JScript.NET compiler and Microsoft.JScript.dll installed with .NET Framework)

See also

Notes

{{Reflist | group=note}}

References

{{Reflist}}

External links

{{ECMAScript}}{{Microsoft APIs}}{{Internet Explorer}}{{Windows Components}}

- content above as imported from Wikipedia
- "JScript" does not exist on GetWiki (yet)
- time: 10:38am EDT - Tue, Aug 20 2019
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