javascript-properties.md

title	ms.custom	ms.date	ms.prod	ms.reviewer	ms.suite	ms.technology	ms.tgt_pltfrm	ms.topic	dev_langs	helpviewer_keywords	ms.assetid	caps.latest.revision	author	ms.author	manager
JavaScript Properties | Microsoft Docs		01/18/2017	windows-client-threshold			devlang-javascript		language-reference	JavaScript TypeScript DHTML	JavaScript, properties	bad3dd19-dbce-459f-b3ea-6b83cca8502b	17	mikejo5000	mikejo	ghogen

JavaScript Properties

The following table lists[!INCLUDEjavascript] properties.

Properties

Property	Description	[!INCLUDEjavascript] object
__proto__ Property	Sets the prototype for an object.	Object
0...n Properties	Returns the value of individual arguments from an arguments object.	arguments
$1...$9 Properties	Returns the nine most-recently memorized portions found during pattern matching.	RegExp
arguments Property	Returns an array containing each argument passed to the currently executing function.	Function
callee Property	Returns the Function object being executed.	arguments
caller Property	Returns a reference to the function that invoked the current function.	Function
constructor Property	Specifies the function that creates an object.	Multiple
description Property	Returns or sets the descriptive string associated with a specific error.	Error
global Property	Returns a Boolean value indicating the state of the global flag (g) used with a regular expression.	Regular Expression
ignoreCase Property	Returns a Boolean value indicating the state of the ignoreCase flag (i) used with a regular expression.	Regular Expression
index Property	Returns the character position where the first successful match begins in a searched string.	RegExp
input Property	Returns the string against which a search was performed.	RegExp
lastIndex Property	Returns the character position where the last successful match begins in a searched string.	RegExp
lastMatch Property	Returns the last matched characters from any regular expression search.	RegExp
lastParen Property	Returns the last parenthesized submatch from any regular expression search, if any.	RegExp
leftContext Property	Returns the characters from the beginning of a searched string up to the position before the beginning of the last match.	RegExp
length Property (arguments)	Returns the actual number of arguments passed to a function by the caller.	arguments
length Property (Array)	Returns an integer value one higher than the highest element defined in an array.	Array
length Property (Function)	Returns the number of arguments defined for a function.	Function
length Property (String)	Returns the length of a String object.	String
message Property	Returns an error message string.	Error
multiline Property	Returns a Boolean value indicating the state of the multiline flag (m) used with a regular expression.	Regular Expression
name Property	Returns the name of an error.	Error
number Property	Returns or sets the numeric value associated with a specific error.	Error
prototype Property	Returns a reference to the prototype for a class of objects.	Multiple
rightContext Property	Returns the characters from the position following the last match to the end of the searched string.	RegExp
source Property	Returns a copy of the text of the regular expression pattern.	Regular Expression

See Also

JavaScript Objects
JavaScript Constants
JavaScript Methods
JavaScript Functions