Regular Expressions and Pattern Matching - JavaScript by Example - page 725

Table 17.3 Class Properties of the RegExp Object

Property What It Describes

input Represents the input string being matched.

lastMatch Represents the last matched characters.

lastParen Represents the last parenthesized substring pattern match.

leftContext Represents the substring preceding the most recent pattern match.

RegExp.$* Boolean value that specifies whether strings should be searched over

multiple lines; same as the multiline property.

RegExp.$& Represents the last matched characters.

RegExp.$_ Represents the string input that is being matched.

RegExp.$ ' Represents the substring preceding the most recent pattern match (see

the leftContext property).

RegExp.$ ' Represents the substring following the most recent pattern match (see

the rightContext property).

RegExp.$+ Represents the last parenthesized substring pattern match (see the

lastParen property).

RegExp.$1,$2,$3... Used to capture substrings of matches.

rightContext Represents the substring following the most recent pattern match.

Table 17.4 Instance Properties of the RegExp Object

Property What It Describes

global Boolean to specify if the g option was used to check the expression

against all possible matches in the string.

ignoreCase Boolean to specify if the i option was used to ignore case during a string

search.

lastIndex If the g option was used, specifies the character position immediately

following the last match found by exec() or test().

multiline Boolean to test if the m option was used to search across multiple lines.

source The text of the regular expression.