| Property |
Description |
FF |
N |
IE |
| Pattern flags |
| i |
Ignore the case of characters |
1 |
4 |
4 |
| g |
Global search. Search all occurrences of the regular
expression in a string |
1 |
4 |
4 |
| gi |
Global search, ignore case |
1 |
4 |
4 |
| m |
Multiline mode. Matches occurrences over multiple lines |
1 |
4 |
4 |
| Position Matching |
| ^ |
Get a match at the beginning of a string |
1 |
4 |
4 |
| $ |
Get a match at the end of a string |
1 |
4 |
4 |
| \b |
Word boundary. Get a match at the beginning or end of a
word in the string |
1 |
4 |
4 |
| \B |
Non-word boundary. Get a match when it is not at the beginning or end of a
word in the string |
1 |
4 |
4 |
| ?= |
A positive look ahead. Get a match if a string is followed
by a specific string |
1 |
4 |
4 |
| ?! |
A negative look ahead. Get a match if a string is not
followed by a specific string |
1 |
4 |
4 |
| Literals |
| \0 |
Find a NULL character |
1 |
4 |
4 |
| \n |
Find a new line character |
1 |
4 |
4 |
| \f |
Find a form feed character |
1 |
4 |
4 |
| \r |
Find a carriage return character |
1 |
4 |
4 |
| \t |
Find a tab character |
1 |
4 |
4 |
| \v |
Find a vertical tab character |
1 |
4 |
4 |
| \xxx |
Find the ASCII character expressed by the octal number
xxx |
1 |
4 |
4 |
| \xdd |
Find the ASCII character expressed by the hex number dd |
1 |
4 |
4 |
| \uxxxx |
Find the ASCII character expressed by the UNICODE xxxx |
1 |
4 |
4 |
| Character Classes |
| [xyz] |
Find any character in the specified character set |
1 |
4 |
4 |
| [^xyz] |
Find any character not in the specified character set |
1 |
4 |
4 |
| . (dot) |
Find any character except newline or line terminator |
1 |
4 |
4 |
| \w |
Find any alphanumeric character including the underscore |
1 |
4 |
4 |
| \W |
Find any non-word character |
1 |
4 |
4 |
| \d |
Find any single digit |
1 |
4 |
4 |
| \D |
Find any non-digit |
1 |
4 |
4 |
| \s |
Find any single space character |
1 |
4 |
4 |
| \S |
Find any single non-space character |
1 |
4 |
4 |
| Repetition |
| {x} |
Finds the exact (x) number of the regular expression
grouped together |
1 |
4 |
4 |
| {x,} |
Finds the exact (x) or more number of the regular expression
grouped together |
1 |
4 |
4 |
| {x,y} |
Finds between x and y number of the regular expression
grouped together |
1 |
4 |
4 |
| ? |
Finds zero or one occurrence of the regular expression |
1 |
4 |
4 |
| * |
Finds zero or more occurrences of the regular expression |
1 |
4 |
4 |
| + |
Finds one or more occurrences of the regular expression |
1 |
4 |
4 |
| Grouping |
| ( ) |
Finds the group of characters inside the parentheses and
stores the matched string |
1 |
4 |
4 |
| (?: ) |
Finds the group of characters inside the parentheses but
does not store the matched string |
1 |
4 |
4 |
| | |
Combines clauses into one regular expression and then
matches any of the individual clauses. Similar to "OR" statement |
1 |
4 |
4 |
| Back references |
| ( )\n |
Back reference. Uses the stored matched string. i.e. from
the ( ) modifier |
1 |
4 |
4 |
| Property |
Description |
FF |
N |
IE |
| global |
Specifies if the "g" modifier is set |
1 |
4 |
4 |
| ignoreCase |
Specifies if the "i" modifier is set |
1 |
4 |
4 |
| input |
The string on which the pattern match is performed |
1 |
4 |
4 |
| lastIndex |
An integer specifying the index at which to start the next
match |
1 |
4 |
4 |
| lastMatch |
The last matched characters |
1 |
4 |
4 |
| lastParen |
The last matched parenthesized substring |
1 |
4 |
4 |
| leftContext |
The substring in front of the characters most recently
matched |
1 |
4 |
4 |
| multiline |
Specifies if the "m" modifier is set |
1 |
4 |
4 |
| prototype |
Allows you to add properties and methods to the object |
1 |
4 |
4 |
| rightContext |
The substring after the characters most recently matched |
1 |
4 |
4 |
| source |
The text used for pattern matching |
1 |
4 |
4 |
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