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Regular characters Description
\ Marks the next character as a special character, or a literal character, or a backward quote, or an octal escape. For example, "n" Matches a character"n"。"\n" Matches a newline character. Serial"\\" matches"\" and"\(" matches"("。
^ matches the start of the input string. If the Multiline property of the RegExp object is set, ^ also matches "\n" or"\r" and the position after that.
$ matches the end of the input string. If the Multiline property of the RegExp object is set, ^ also matches the end of the input string.$ also matches "\n" or"\r" before.
* Matches the preceding sub-expression zero or more times. For example, zo* matches "z" and"zoo"。* is equivalent to{0,}。
+ matches the preceding subexpression one or more times. For example, "zo+" matches"zo" and"zoo"， but not"z"。+ is equivalent to{1,}。
? matches the preceding subexpression zero or one time. For example, "do(es)?" can match"does" or"does" in"do"。? which is equivalent to{0,1}。
{n}n is a non-negative integer. Match the determinedn times. For example, "o{2}" cannot match"Bob" in"o"， but matches the two o's in"food" but matches the two o's in
{n,}n is a non-negative integer. Match at leastn times. For example, "o{2,}" cannot match"Bob" in"o"， but matches all o's in"foooood" but matches all o's in"o{1,}" is equivalent to"o+"。"o{0,}" is equivalent to"o*"。
{n,m}m andn are non-negative integers, wheren<=m。 matches at leastn times and at mostm times. For example, "o{1,3}" will match the first three o's in"fooooood" will match the first three o's in"o{0,1}" is equivalent to"o?"。 Note that there can be no space between a comma and two numbers.
? When this character is immediately followed by any of the other qualifiers (*,+,? , the pattern is{n}，{n,}，{n,m}） When the character is immediately followed by any other restriction character (*,+,??, etc.), the matching pattern is non-greedy. The non-greedy mode matches as few strings as possible, while the default greedy mode matches as many strings as possible. For example, the string "oooo"，"o+?" will match a single"o"， and"o+" will match all"o"。
. will match any single character except "\n" will match any single character except ". To match any character including"\n" any character, use a pattern like"(.|\n)" pattern.
(pattern) Match the pattern and get the match. The resulting match can be obtained from the resulting Matches collection, which in VBScript uses the SubMatches collection and in JScript uses the$0…$ 9 attribute in VBScript and JScript. To match parenthesis characters, use the "\(" or"\)"。
(?:pattern) matches the pattern but does not fetch the result, i.e. it is a non-fetchable match and is not stored for later use. This is not the case when combining parts of a pattern using the or character "(|)" to combine parts of a pattern. For example"industr(?:y|ies)" is a shorter expression than"industry|industries" expression.
(?=pattern) Positive affirmative pre-checking, which matches the lookup string at the beginning of any string that matches the pattern. This is a non-accessible match, i.e., the match does not need to be accessed for later use. For example, "Windows(?=95|98|NT|2000)" matches"Windows2000" in"Windows"， but not"Windows3.1" in"Windows"。 Pre-checks do not consume characters, i.e., after a match occurs, the search for the next match begins immediately after the last match, not after the character containing the pre-check.
(?!pattern) Positive Negative Prefetch matches the search string at the beginning of any string that does not match the pattern. This is a non-fetchable match, i.e., the match does not need to be fetched for later use. For example, "Windows(?!95|98|NT|2000)" matches"Windows3.1" in"Windows"， but not"Windows2000" in"Windows"。 Pre-checks do not consume characters, i.e., after a match occurs, the search for the next match starts immediately after the last match, not after the character containing the pre-check.
(?<=pattern) Reverse positive prefixes are similar to forward positive prefixes, but in the opposite direction. For example, "(?<=95|98|NT|2000)Windows" matches"2000Windows" in"Windows"， but not"3.1Windows" in"Windows"。
(?<!pattern) Reverse negative prefixes are similar to forward negative prefixes, but in the opposite direction. For example, "(?<!95|98|NT|2000)Windows" can match"3.1Windows" in"Windows"， but not"2000Windows" in"Windows"。
x|y matches x or y. For example, "z|food" matches"z" or"food"。"(z|f)ood" matches"zood" or"food"。
[xyz] set of characters. Matches any of the characters in the set. For example, "[abc]" matches any of the characters in"plain" in the"a"。
[^xyz] set of negative characters. Matches any character not included. For example, "[^abc]" matches"plain" in the"p"。
[a-z] range of characters. Matches any character in the specified range. For example, "[a-z]" matches any character in the range"a" to any lowercase character in the range of"z" any lowercase character in the range.
[^a-z] Negative character range. Matches any character not in the specified range. For example, "[^a-z]" matches any character not in the range"a" to"z" matches any character not in the specified range.
\b Matches a word boundary, i.e. a space between a word and a space. For example, "er\b" matches"never" in"er"， but not"verb" in"er"。
\B matches non-word boundaries. "er\B" can match"verb" in"er"， but not"never" in"er"。
\cx matches a control character specified by x. For example, \cM matches a Control-M or a carriage return. For example, \cM matches a Control-M or Carriage Return character. x must be one of A-Z or a-z. Otherwise, c is treated as a literal "c" character.
\d Matches a numeric character. Equivalent to[0-9]。
\D Matches a non-numeric character. Equivalent to[^0-9]。
\f Matches a page break. Equivalent to \x0c and \cL.
\n Matches a line feed character. Equivalent to \x0a and \cJ.
\r Match a carriage return. Equivalent to \x0d and \cM.
\s Matches any whitespace character, including spaces, tabs, page breaks, etc. Equivalent to[ \f\n\r\t\v]。
\S Matches any non-white space character. Equivalent to[^ \f\n\r\t\v]。
\t Matches a tab. Equivalent to \x09 and \cI.
\v Matches a vertical tab. Equivalent to \x0b and \cK.
\w Matches any word character that includes an underscore. Equivalent to "[A-Za-z0-9_]"。
\W Matches any non-word character. Equivalent to "[^A-Za-z0-9_]"。
\xn matchesn， wheren is the hexadecimal escape value. The hexadecimal escape must be two digits long. For example, "\x41" matches"A"。"\x041" is equivalent to"\x04&1"。 ASCII can be used in regular expressions...
\num Matchnum， wherenum is a positive integer. A reference to the obtained match. For example, "(.)\1" matches two consecutive identical characters.
\n Identifies an octal escape value or a backward reference. If \n is preceded by at leastn subexpressions are fetched, thenn is a backward reference. Otherwise, ifn is an octal number (0-7), thenn is an octal escape.
\nm Identifies an octal escape or a backward reference. If \nm is preceded by at leastnm subexpressions, thennm is a backward reference. If \nm was preceded by at leastn acquisitions, thenn is a backward reference followed by the textm is a backward reference. If none of the previous conditions are satisfied, ifn andm are both octal numbers (0-7), then \nm will match the octal escape valuenm。
\nml Ifn is an octal number (0-3),and m and l are both octal numbers (0-7), then match the octal escape valuenml。
\un matchesn， wheren is a Unicode character represented by four hexadecimal digits. For example, \u00A9 matches the copyright symbol (©).
Username/^[a-z0-9_-]{3,16}$/
Password/^[a-z0-9_-]{6,18}$/
Password2(?=^.{8,}$)(?=.*\d)(?=.*\W+)(?=.*[A-Z])(?=.*[a-z])(?!.*\n).*$ ( Composed of numbers/upper case letters/lower case letters/punctuation marks, all four must be present, more than 8 digits.)
Hexadecimal value/^#?([a-f0-9]{6}|[a-f0-9]{3})$/
E-mail address/^([a-z0-9_\.-]+)@([\da-z\.-]+)\.([a-z\.]{2,6})$/
/^[a-z\d]+(\.[a-z\d]+)*@([\da-z](-[\da-z])?)+(\.{1,2}[a-z]+)+$/ or\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*
URL/^(https?:\/\/)?([\da-z\.-]+)\.([a-z\.]{2,6})([\/\w \.-]*)*\/?$/ or[a-zA-z]+://[^\s]*
IP Address/((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)/
/^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/ or((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)
HTML tag/^<([a-z]+)([^<]+)*(?:>(.*)<\/\1>|\s+\/>)$/ or<(.*)(.*)>.*<\/\1>|<(.*) \/>
Delete Code \\\ Comments(?<!http:|\S)//.*$
Match double-byte characters( Including Chinese Characters)[^\x00-\xff]
Chinese Characters( Characters)[\u4e00-\u9fa5]
Range of Chinese characters in Unicode code/^[\u2E80-\u9FFF]+$/
Chinese and full-width punctuation( Characters)[\u3000-\u301e\ufe10-\ufe19\ufe30-\ufe44\ufe50-\ufe6b\uff01-\uffee]
Date( Year-Month-Day)(\d{4}|\d{2})-((0?([1-9]))|(1[1|2]))-((0?[1-9])|([12]([1-9]))|(3[0|1]))
Date( Month/Day/Year)((0?[1-9]{1})|(1[1|2]))/(0?[1-9]|([12][1-9])|(3[0|1]))/(\d{4}|\d{2})
Time( Hour:Minute, 24 Hour System)((1|0?)[0-9]|2[0-3]):([0-5][0-9])
Mainland China Landline Numbers(\d{4}-|\d{3}-)?(\d{8}|\d{7})
Mainland China Cell Phone Number1\d{10}
China Postal Code[1-9]\d{5}
Mainland China Identity Card Number( 15 or 18 digits)\d{15}(\d\d[0-9xX])?
Non-negative integer( Positive integer or zero)\d+
Positive integer[0-9]*[1-9][0-9]*
Negative integer-[0-9]*[1-9][0-9]*
Integer-?\d+
Fractions(-?\d+)(\.\d+)?
Blank lines\ n\s*\r or \n\n(editplus) or ^[\s\S ]*\n
QQ number[1-9]\d{4,}
Words that do not contain abc\b((?!abc)\w)+\b
Match first and last blank characters^\s*|\s*$
Edit Commonly Used
Here are some substitutions for special Chinese characters(editplus)
^[0-9].*\n
^[^ The following are some replacements for special Chinese characters].*\n
^[ Exercises].*\n
^[\s\S ]*\n
^[0-9]*\.
^[\s\S ]*\n
<p[^<>*]>
href="javascript:if\(confirm\('(.*?)'\)\)window\.location='(.*?)'"
<span style=".[^"]*rgb\(255,255,255\)">.[^<>]*</span>
<DIV class=xs0>[\s\S]*?</DIV>
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