This topic has not yet been rated - Rate this topic

Properties (Visual Studio - JScript)

Visual Studio 2010

A property is a value or set of values (in the form of an array or object) that is a member of an object. The following sections link to information that explains how to use the properties in JScript.

In This Section

0...n Properties: Returns the actual value of individual arguments from an arguments object returned by the arguments property of an executing function.
$1...$9 Properties: Returns the nine most-recently memorized portions found during pattern matching.
arguments Property: Returns the arguments object for the currently executing Function object.caller Property
callee Property: Returns the Function object being executed that is the body text of the specified Function object.
caller Property: Returns a reference to the function that invoked the current function.
constructor Property: Specifies the function that creates an object.
description Property: Returns or sets the descriptive string associated with a specific error.
E Property: Returns the mathematical constant e, the base of natural logarithms.
global Property: Returns a Boolean value indicating the state of the global flag (g) used with a regular expression.
ignoreCase Property: Returns a Boolean value indicating the state of the ignoreCase flag (i) used with a regular expression.
index Property: Returns the character position where the first successful match begins in a searched string.
Infinity Property: Returns an initial value of Number.POSITIVE_INFINITY.
input Property ($_): Returns the string against which a regular expression search was performed.
lastIndex Property: Returns the character position where the next match begins in a searched string.
lastMatch Property ($&): Returns the last matched characters from any regular expression search.
lastParen Property ($+): Returns the last parenthesized submatch, if any, from any regular expression search.
leftContext Property ($`): Returns the characters from the beginning of a searched string up to the position before the beginning of the last match.
length Property (arguments): Returns the actual number of arguments passed to a function by the caller.
length Property (Array): Returns an integer value one higher than the highest element defined in an array.
length Property (Function): Returns the number of arguments defined for a function.
length Property (String): Returns the length of a String object.
LN10 Property: Returns the natural logarithm of 10.
LN2 Property: Returns the natural logarithm of 2.
LOG10E Property: Returns the base-10 logarithm of e, the base of natural logarithms.
LOG2E Property: Returns the base-2 logarithm of e, the base of natural logarithms.
MAX_VALUE Property: Returns the largest number representable in JScript. Equal to approximately 1.79E+308.
message Property: Returns an error message string.
MIN_VALUE Property: Returns the number closest to zero that JScript can represent. Equal to approximately 5.00E-324.
multiline Property: Returns a Boolean value indicating the state of the multiline flag (m) used with a regular expression.
name Property: Returns the name of an error.
NaN Property: A special value that indicates that an arithmetic expression returned a value that was not a number.
NaN Property (Global): Returns the special value NaN indicating that an expression is not a number.
NEGATIVE_INFINITY Property: Returns a value more negative than the largest negative number (-Number.MAX_VALUE) that JScript can represent.
number Property: Returns a value more negative than the largest negative number (-Number.MAX_VALUE) that JScript can represent.
PI Property: Returns the ratio of the circumference of a circle to its diameter, approximately 3.141592653589793.
POSITIVE_INFINITY Property: Returns a value larger than the largest number (Number.MAX_VALUE) that JScript can represent.
propertyIsEnumerable Property: Returns a Boolean value indicating whether a specified property is part of an object and if it is enumerable.
prototype Property: Returns a reference to the prototype for a class of objects.
rightContext Property ($'): Returns the characters from the position following the last match to the end of the searched string.
source Property: Returns a copy of the text of the regular expression pattern.
SQRT1_2 Property: Returns he square root of 0.5, or one divided by the square root of 2.
SQRT2 Property: Returns the square root of 2
undefined Property: Returns an initial value of undefined.

Related Sections

JScript Reference: Lists elements that comprise JScript Language Reference and links to topics that explain the details behind the proper use of language elements.

Did you find this helpful? Yes No

Not accurate

Not enough depth

Need more code examples

(1500 characters remaining)

Community Content Add

FAQ