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