This page is specific to
.NET Framework 3.0
Other versions are also available for the following:
JScript
Microsoft JScript Features - Non-ECMA (Windows Scripting - JScript)
Updated: November 2007
The following table lists JScript features that are not compliant with ECMA standards.

Features
Category
|
Feature/Keyword
|
|---|
Array Handling
| concat, slice VBArray dimensions, getItem, lbound, toArray, ubound |
Conditional Compilation
| @cc_on @if Statement @set Statement Conditional Compilation Variables |
Control flow
| do...while Labeled switch |
Dates and Time
| getVarDate |
Enumeration
| Enumerator atEnd, item, moveFirst, moveNext |
Error Handling
| Error description, number throw, try...catch |
Function Creation
| caller |
Operators
| Identity (===), Nonidentity (!==) |
Objects
| Enumerator RegExp Regular Expression VBArray ActiveXObject GetObject |
Regular Expressions and Pattern Matching
| RegExp index, input, lastIndex, $1...$9, source, compile, exec, test Regular Expression Syntax |
Script Engine Identification
| ScriptEngine ScriptEngineBuildVersion ScriptEngineMajorVersion ScriptEngineMinorVersion |
Strings
| concat, slice match, replace, search anchor, big, blink, bold, fixed, fontcolor, fontsize, italics, link, small, strike, sub, sup |