Regular expression syntax table

character	description
\	The next character is marked as a special character, or a literal character, or a backward reference, or an octal escape. For example, " n" matches the character n" ." " \n" Matches a newline. Serial " \\," matching " \" and " \(" the match (" ."
^	Matches the beginning of the string. If the object is set RegExp Multiline property, ^ also matches " \n" or " \rposition" after.
$	Matches the input end of the string. If the RegExp object's Multiline property is set, $ also matches " \n" or " \rposition before."
*	Matches the preceding subexpression zero or more times. For example, zo matches " z" and zoo" ." It is equivalent to {0}.
+	Matches the preceding subexpression one or more times. For example, " zo+" can match " zo" and zoo" ", but can not match z" ." + Is equivalent to {1}.
?	Matches the preceding subexpression zero or one. For example, " do(es)?" matches " does" or " does" in do" ." ? Is equivalent to {0,1}.
{*n*}	n is a nonnegative integer. Matching the determined n times. For example, " o{2}" does not match the " Bob" in o" ", but can match the " food" in the two o.
{*n*,}	n is a nonnegative integer. Matching at least n times. For example, " o{2,}" does not match the " Bob" in o" ", but it can match " fooooodall o" in. " o{1,}" Is equivalent to o+" ." " o{0,}" Is equivalent to o*" ."
{*n*,*m*}	m and n are non-negative integers, where n <= m . Match at least n times and match up to m times. For example, " o{1,3}" will match " fooooood" in the first three o. " o{0,1}" Is equivalent to o?" ." Please note that no spaces between the comma and the two numbers.
?	When the character immediately to any other qualifiers ( , +,?, { N- }, { n- ,}, { n- , m *}) when the rear, non-greedy matching pattern. Non-greedy pattern matches as little as possible the search string, and the default greedy pattern matches as much of the string search. For example, the string oooo" ", " o+?" will match a single o" " and " o+" matches all the o" ."
.	In addition to matching " \nany single character other than" in. To match including " \n" any characters, including use as " (.|\n)" model.
(pattern)	Match the pattern and get the match. The matching can be obtained from the Matches have been used in collection SubMatches VBScript, JScript is used in the $ 0 ... $ 9 properties. To match parentheses characters, use " \(" or \)" ."
(?:pattern)	But not to acquire matching pattern matching results, that this is a non-access match, not stored for later use. This "use or character (|)" to a combination of the various parts of the model is useful. For example, " industr(?:y|ies)" it is more than a ' industry|industries' more brief expressions.
(?=pattern)	Forward definitely pre-investigation, matching the search string at the beginning of the string any pattern matching. This is a non-access match, that is, the match does not need to obtain for later use. For example, " Windows(?=95|98|NT|2000)" matches " Windows2000" in Windows" ", but not " Windows3.1" the Windows" ." Pre-check does not consume characters, that is, after a match occurs, the last match after the next match to start the search immediately, rather than starting from the characters that contains pre-investigation.
(?!pattern)	Forward negative pre-investigation, matching the search string at the beginning of any match pattern string. This is a non-access match, that is, the match does not need to obtain for later use. For example " Windows(?!95|98|NT|2000)" matches " Windows3.1" in Windows" ", but not " Windows2000" the Windows" ." Pre-check does not consume characters, that is, after a match occurs, after the last match started immediately next match search, rather than starting from the characters that contains pre-investigation
(?<=pattern)	Reverse certainly pre-investigation, and certainly pre-investigation Quasi forward, but in the opposite direction. For example, " (?<=95|98|NT|2000)Windows" matches " 2000Windows" in Windows" ", but not " 3.1Windows" the Windows" ."
(?<!pattern)	Reverse negative pre-check, with a negative pre-investigation Quasi forward, but in the opposite direction. For example, " (?”能匹配“3.1Windows ”中的“Windows ”，但不能匹配“2000Windows ”中的“Windows ”。 | |the X-