\u5168\u90e8\u7b26\u53f7\u89e3\u91ca\r\n <\/p>
<\/p>
\u5b57\u7b26<\/p>
\u63cf\u8ff0<\/p>
<\/p>
\\ \u5c06\u4e0b\u4e00\u4e2a\u5b57\u7b26\u6807\u8bb0\u4e3a\u4e00\u4e2a\u7279\u6b8a\u5b57\u7b26\u3001\u6216\u4e00\u4e2a\u539f\u4e49\u5b57\u7b26\u3001\u6216\u4e00\u4e2a \u5411\u540e\u5f15\u7528\u3001\u6216\u4e00\u4e2a\u516b\u8fdb\u5236\u8f6c\u4e49\u7b26\u3002\u4f8b\u5982\uff0c'n' \u5339\u914d\u5b57\u7b26 "n"\u3002'\\n' \u5339\u914d\u4e00\u4e2a\u6362\u884c\u7b26\u3002\u5e8f\u5217 '\\\\' \u5339\u914d "\\" \u800c "\\(" \u5219\u5339\u914d "("\u3002 <\/p>
^ \u5339\u914d\u8f93\u5165\u5b57\u7b26\u4e32\u7684\u5f00\u59cb\u4f4d\u7f6e\u3002\u5982\u679c\u8bbe\u7f6e\u4e86 RegExp \u5bf9\u8c61\u7684 Multiline \u5c5e\u6027\uff0c^ \u4e5f\u5339\u914d '\\n' \u6216 '\\r' \u4e4b\u540e\u7684\u4f4d\u7f6e\u3002 <\/p>
$ \u5339\u914d\u8f93\u5165\u5b57\u7b26\u4e32\u7684\u7ed3\u675f\u4f4d\u7f6e\u3002\u5982\u679c\u8bbe\u7f6e\u4e86RegExp \u5bf9\u8c61\u7684 Multiline \u5c5e\u6027\uff0c$ \u4e5f\u5339\u914d '\\n' \u6216 '\\r' \u4e4b\u524d\u7684\u4f4d\u7f6e\u3002 <\/p>
* \u5339\u914d\u524d\u9762\u7684\u5b50\u8868\u8fbe\u5f0f\u96f6\u6b21\u6216\u591a\u6b21\u3002\u4f8b\u5982\uff0czo* \u80fd\u5339\u914d "z" \u4ee5\u53ca "zoo"\u3002* \u7b49\u4ef7\u4e8e{0,}\u3002 <\/p>
+ \u5339\u914d\u524d\u9762\u7684\u5b50\u8868\u8fbe\u5f0f\u4e00\u6b21\u6216\u591a\u6b21\u3002\u4f8b\u5982\uff0c'zo+' \u80fd\u5339\u914d "zo" \u4ee5\u53ca "zoo"\uff0c\u4f46\u4e0d\u80fd\u5339\u914d "z"\u3002+ \u7b49\u4ef7\u4e8e {1,}\u3002 <\/p>
? \u5339\u914d\u524d\u9762\u7684\u5b50\u8868\u8fbe\u5f0f\u96f6\u6b21\u6216\u4e00\u6b21\u3002\u4f8b\u5982\uff0c"do(es)?" \u53ef\u4ee5\u5339\u914d "do" \u6216 "does" \u4e2d\u7684"do" \u3002? \u7b49\u4ef7\u4e8e {0,1}\u3002 <\/p>
{n} n \u662f\u4e00\u4e2a\u975e\u8d1f\u6574\u6570\u3002\u5339\u914d\u786e\u5b9a\u7684 n \u6b21\u3002\u4f8b\u5982\uff0c'o{2}' \u4e0d\u80fd\u5339\u914d "Bob" \u4e2d\u7684 'o'\uff0c\u4f46\u662f\u80fd\u5339\u914d "food" \u4e2d\u7684\u4e24\u4e2a o\u3002 <\/p>
{n,} n \u662f\u4e00\u4e2a\u975e\u8d1f\u6574\u6570\u3002\u81f3\u5c11\u5339\u914dn \u6b21\u3002\u4f8b\u5982\uff0c'o{2,}' \u4e0d\u80fd\u5339\u914d "Bob" \u4e2d\u7684 'o'\uff0c\u4f46\u80fd\u5339\u914d "foooood" \u4e2d\u7684\u6240\u6709 o\u3002'o{1,}' \u7b49\u4ef7\u4e8e 'o+'\u3002'o{0,}' \u5219\u7b49\u4ef7\u4e8e 'o*'\u3002 <\/p>
{n,m} m \u548c n \u5747\u4e3a\u975e\u8d1f\u6574\u6570\uff0c\u5176\u4e2dn <= m\u3002\u6700\u5c11\u5339\u914d n \u6b21\u4e14\u6700\u591a\u5339\u914d m \u6b21\u3002\u4f8b\u5982\uff0c"o{1,3}" \u5c06\u5339\u914d "fooooood" \u4e2d\u7684\u524d\u4e09\u4e2a o\u3002'o{0,1}' \u7b49\u4ef7\u4e8e 'o?'\u3002\u8bf7\u6ce8\u610f\u5728\u9017\u53f7\u548c\u4e24\u4e2a\u6570\u4e4b\u95f4\u4e0d\u80fd\u6709\u7a7a\u683c\u3002 <\/p>
? \u5f53\u8be5\u5b57\u7b26\u7d27\u8ddf\u5728\u4efb\u4f55\u4e00\u4e2a\u5176\u4ed6\u9650\u5236\u7b26 (*, +, ?, {n}, \r\n{n,}, {n,m}) \r\n\u540e\u9762\u65f6\uff0c\u5339\u914d\u6a21\u5f0f\u662f\u975e\u8d2a\u5a6a\u7684\u3002\u975e\u8d2a\u5a6a\u6a21\u5f0f\u5c3d\u53ef\u80fd\u5c11\u7684\u5339\u914d\u6240\u641c\u7d22\u7684\u5b57\u7b26\u4e32\uff0c\u800c\u9ed8\u8ba4\u7684\u8d2a\u5a6a\u6a21\u5f0f\u5219\u5c3d\u53ef\u80fd\u591a\u7684\u5339\u914d\u6240\u641c\u7d22\u7684\u5b57\u7b26\u4e32\u3002\u4f8b\u5982\uff0c\u5bf9\u4e8e\u5b57\u7b26\u4e32 \r\n"oooo"\uff0c'o+?' \u5c06\u5339\u914d\u5355\u4e2a "o"\uff0c\u800c 'o+' \u5c06\u5339\u914d\u6240\u6709 'o'\u3002 <\/p>
. \u5339\u914d\u9664 "\\n" \u4e4b\u5916\u7684\u4efb\u4f55\u5355\u4e2a\u5b57\u7b26\u3002\u8981\u5339\u914d\u5305\u62ec '\\n' \u5728\u5185\u7684\u4efb\u4f55\u5b57\u7b26\uff0c\u8bf7\u4f7f\u7528\u8c61 '[.\\n]' \u7684\u6a21\u5f0f\u3002 <\/p>
(pattern) \u5339\u914d pattern \u5e76\u83b7\u53d6\u8fd9\u4e00\u5339\u914d\u3002\u6240\u83b7\u53d6\u7684\u5339\u914d\u53ef\u4ee5\u4ece\u4ea7\u751f\u7684 Matches \u96c6\u5408\u5f97\u5230\uff0c\u5728VBScript \u4e2d\u4f7f\u7528 SubMatches \u96c6\u5408\uff0c\u5728JScript \u4e2d\u5219\u4f7f\u7528 $0\u2026$9 \u5c5e\u6027\u3002\u8981\u5339\u914d\u5706\u62ec\u53f7\u5b57\u7b26\uff0c\u8bf7\u4f7f\u7528 '\\(' \u6216 '\\)'\u3002 <\/p>
(?:pattern) \u5339\u914d pattern \r\n\u4f46\u4e0d\u83b7\u53d6\u5339\u914d\u7ed3\u679c\uff0c\u4e5f\u5c31\u662f\u8bf4\u8fd9\u662f\u4e00\u4e2a\u975e\u83b7\u53d6\u5339\u914d\uff0c\u4e0d\u8fdb\u884c\u5b58\u50a8\u4f9b\u4ee5\u540e\u4f7f\u7528\u3002\u8fd9\u5728\u4f7f\u7528 "\u6216" \u5b57\u7b26 (|) \u6765\u7ec4\u5408\u4e00\u4e2a\u6a21\u5f0f\u7684\u5404\u4e2a\u90e8\u5206\u662f\u5f88\u6709\u7528\u3002\u4f8b\u5982\uff0c \r\n'industr(?:y|ies) \u5c31\u662f\u4e00\u4e2a\u6bd4 'industry|industries' \u66f4\u7b80\u7565\u7684\u8868\u8fbe\u5f0f\u3002 <\/p>
(?=pattern) \u6b63\u5411\u9884\u67e5\uff0c\u5728\u4efb\u4f55\u5339\u914d pattern \r\n\u7684\u5b57\u7b26\u4e32\u5f00\u59cb\u5904\u5339\u914d\u67e5\u627e\u5b57\u7b26\u4e32\u3002\u8fd9\u662f\u4e00\u4e2a\u975e\u83b7\u53d6\u5339\u914d\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u8be5\u5339\u914d\u4e0d\u9700\u8981\u83b7\u53d6\u4f9b\u4ee5\u540e\u4f7f\u7528\u3002\u4f8b\u5982\uff0c'Windows \r\n(?=95|98|NT|2000)' \u80fd\u5339\u914d "Windows 2000" \u4e2d\u7684 "Windows" \uff0c\u4f46\u4e0d\u80fd\u5339\u914d "Windows 3.1" \r\n\u4e2d\u7684 \r\n"Windows"\u3002\u9884\u67e5\u4e0d\u6d88\u8017\u5b57\u7b26\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u5728\u4e00\u4e2a\u5339\u914d\u53d1\u751f\u540e\uff0c\u5728\u6700\u540e\u4e00\u6b21\u5339\u914d\u4e4b\u540e\u7acb\u5373\u5f00\u59cb\u4e0b\u4e00\u6b21\u5339\u914d\u7684\u641c\u7d22\uff0c\u800c\u4e0d\u662f\u4ece\u5305\u542b\u9884\u67e5\u7684\u5b57\u7b26\u4e4b\u540e\u5f00\u59cb\u3002 <\/p>
(?!pattern) \u8d1f\u5411\u9884\u67e5\uff0c\u5728\u4efb\u4f55\u4e0d\u5339\u914d pattern \r\n\u7684\u5b57\u7b26\u4e32\u5f00\u59cb\u5904\u5339\u914d\u67e5\u627e\u5b57\u7b26\u4e32\u3002\u8fd9\u662f\u4e00\u4e2a\u975e\u83b7\u53d6\u5339\u914d\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u8be5\u5339\u914d\u4e0d\u9700\u8981\u83b7\u53d6\u4f9b\u4ee5\u540e\u4f7f\u7528\u3002\u4f8b\u5982'Windows \r\n(?!95|98|NT|2000)' \u80fd\u5339\u914d "Windows 3.1" \u4e2d\u7684 "Windows"\uff0c\u4f46\u4e0d\u80fd\u5339\u914d "Windows 2000" \r\n\u4e2d\u7684 "Windows"\u3002\u9884\u67e5\u4e0d\u6d88\u8017\u5b57\u7b26\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u5728\u4e00\u4e2a\u5339\u914d\u53d1\u751f\u540e\uff0c\u5728\u6700\u540e\u4e00\u6b21\u5339\u914d\u4e4b\u540e\u7acb\u5373\u5f00\u59cb\u4e0b\u4e00\u6b21\u5339\u914d\u7684\u641c\u7d22\uff0c\u800c\u4e0d\u662f\u4ece\u5305\u542b\u9884\u67e5\u7684\u5b57\u7b26\u4e4b\u540e\u5f00\u59cb <\/p>
x|y \u5339\u914d x \u6216 y\u3002\u4f8b\u5982\uff0c'z|food' \u80fd\u5339\u914d "z" \u6216 "food"\u3002'(z|f)ood' \u5219\u5339\u914d "zood" \u6216 "food"\u3002 <\/p>
[xyz] \u5b57\u7b26\u96c6\u5408\u3002\u5339\u914d\u6240\u5305\u542b\u7684\u4efb\u610f\u4e00\u4e2a\u5b57\u7b26\u3002\u4f8b\u5982\uff0c '[abc]' \u53ef\u4ee5\u5339\u914d "plain" \u4e2d\u7684 'a'\u3002 <\/p>
[^xyz] \u8d1f\u503c\u5b57\u7b26\u96c6\u5408\u3002\u5339\u914d\u672a\u5305\u542b\u7684\u4efb\u610f\u5b57\u7b26\u3002\u4f8b\u5982\uff0c '[^abc]' \u53ef\u4ee5\u5339\u914d "plain" \u4e2d\u7684'p'\u3002 <\/p>
[a-z] \u5b57\u7b26\u8303\u56f4\u3002\u5339\u914d\u6307\u5b9a\u8303\u56f4\u5185\u7684\u4efb\u610f\u5b57\u7b26\u3002\u4f8b\u5982\uff0c'[a-z]' \u53ef\u4ee5\u5339\u914d 'a' \u5230 'z' \u8303\u56f4\u5185\u7684\u4efb\u610f\u5c0f\u5199\u5b57\u6bcd\u5b57\u7b26\u3002 <\/p>
[^a-z] \u8d1f\u503c\u5b57\u7b26\u8303\u56f4\u3002\u5339\u914d\u4efb\u4f55\u4e0d\u5728\u6307\u5b9a\u8303\u56f4\u5185\u7684\u4efb\u610f\u5b57\u7b26\u3002\u4f8b\u5982\uff0c'[^a-z]' \u53ef\u4ee5\u5339\u914d\u4efb\u4f55\u4e0d\u5728 'a' \u5230 'z' \u8303\u56f4\u5185\u7684\u4efb\u610f\u5b57\u7b26\u3002 <\/p>
\\b \u5339\u914d\u4e00\u4e2a\u5355\u8bcd\u8fb9\u754c\uff0c\u4e5f\u5c31\u662f\u6307\u5355\u8bcd\u548c\u7a7a\u683c\u95f4\u7684\u4f4d\u7f6e\u3002\u4f8b\u5982\uff0c 'er\\b' \u53ef\u4ee5\u5339\u914d"never" \u4e2d\u7684 'er'\uff0c\u4f46\u4e0d\u80fd\u5339\u914d "verb" \u4e2d\u7684 'er'\u3002 <\/p>
\\B \u5339\u914d\u975e\u5355\u8bcd\u8fb9\u754c\u3002'er\\B' \u80fd\u5339\u914d "verb" \u4e2d\u7684 'er'\uff0c\u4f46\u4e0d\u80fd\u5339\u914d "never" \u4e2d\u7684 'er'\u3002 <\/p>
\\cx \u5339\u914d\u7531 x \u6307\u660e\u7684\u63a7\u5236\u5b57\u7b26\u3002\u4f8b\u5982\uff0c \\cM \u5339\u914d\u4e00\u4e2a Control-M \u6216\u56de\u8f66\u7b26\u3002x \u7684\u503c\u5fc5\u987b\u4e3a A-Z \u6216 a-z \u4e4b\u4e00\u3002\u5426\u5219\uff0c\u5c06 c \u89c6\u4e3a\u4e00\u4e2a\u539f\u4e49\u7684 'c' \u5b57\u7b26\u3002 <\/p>
\\d \u5339\u914d\u4e00\u4e2a\u6570\u5b57\u5b57\u7b26\u3002\u7b49\u4ef7\u4e8e [0-9]\u3002 <\/p>
\\D \u5339\u914d\u4e00\u4e2a\u975e\u6570\u5b57\u5b57\u7b26\u3002\u7b49\u4ef7\u4e8e [^0-9]\u3002 <\/p>
\\f \u5339\u914d\u4e00\u4e2a\u6362\u9875\u7b26\u3002\u7b49\u4ef7\u4e8e \\x0c \u548c \\cL\u3002 <\/p>
\\n \u5339\u914d\u4e00\u4e2a\u6362\u884c\u7b26\u3002\u7b49\u4ef7\u4e8e \\x0a \u548c \\cJ\u3002 <\/p>
\\r \u5339\u914d\u4e00\u4e2a\u56de\u8f66\u7b26\u3002\u7b49\u4ef7\u4e8e \\x0d \u548c \\cM\u3002 <\/p>
\\s \u5339\u914d\u4efb\u4f55\u7a7a\u767d\u5b57\u7b26\uff0c\u5305\u62ec\u7a7a\u683c\u3001\u5236\u8868\u7b26\u3001\u6362\u9875\u7b26\u7b49\u7b49\u3002\u7b49\u4ef7\u4e8e [ \\f\\n\\r\\t\\v]\u3002 <\/p>
\\S \u5339\u914d\u4efb\u4f55\u975e\u7a7a\u767d\u5b57\u7b26\u3002\u7b49\u4ef7\u4e8e [^ \\f\\n\\r\\t\\v]\u3002 <\/p>
\\t \u5339\u914d\u4e00\u4e2a\u5236\u8868\u7b26\u3002\u7b49\u4ef7\u4e8e \\x09 \u548c \\cI\u3002 <\/p>
\\v \u5339\u914d\u4e00\u4e2a\u5782\u76f4\u5236\u8868\u7b26\u3002\u7b49\u4ef7\u4e8e \\x0b \u548c \\cK\u3002 <\/p>
\\w \u5339\u914d\u5305\u62ec\u4e0b\u5212\u7ebf\u7684\u4efb\u4f55\u5355\u8bcd\u5b57\u7b26\u3002\u7b49\u4ef7\u4e8e'[A-Za-z0-9_]'\u3002 <\/p>
\\W \u5339\u914d\u4efb\u4f55\u975e\u5355\u8bcd\u5b57\u7b26\u3002\u7b49\u4ef7\u4e8e '[^A-Za-z0-9_]'\u3002 <\/p>
\\xn \u5339\u914d n\uff0c\u5176\u4e2d n \u4e3a\u5341\u516d\u8fdb\u5236\u8f6c\u4e49\u503c\u3002\u5341\u516d\u8fdb\u5236\u8f6c\u4e49\u503c\u5fc5\u987b\u4e3a\u786e\u5b9a\u7684\u4e24\u4e2a\u6570\u5b57\u957f\u3002\u4f8b\u5982\uff0c'\\x41' \u5339\u914d "A"\u3002'\\x041' \u5219\u7b49\u4ef7\u4e8e '\\x04' & "1"\u3002\u6b63\u5219\u8868\u8fbe\u5f0f\u4e2d\u53ef\u4ee5\u4f7f\u7528 ASCII \u7f16\u7801\u3002. <\/p>
\\num \u5339\u914d num\uff0c\u5176\u4e2d num \u662f\u4e00\u4e2a\u6b63\u6574\u6570\u3002\u5bf9\u6240\u83b7\u53d6\u7684\u5339\u914d\u7684\u5f15\u7528\u3002\u4f8b\u5982\uff0c'(.)\\1' \u5339\u914d\u4e24\u4e2a\u8fde\u7eed\u7684\u76f8\u540c\u5b57\u7b26\u3002 <\/p>
\\n \u6807\u8bc6\u4e00\u4e2a\u516b\u8fdb\u5236\u8f6c\u4e49\u503c\u6216\u4e00\u4e2a\u5411\u540e\u5f15\u7528\u3002\u5982\u679c \\n \u4e4b\u524d\u81f3\u5c11 n \u4e2a\u83b7\u53d6\u7684\u5b50\u8868\u8fbe\u5f0f\uff0c\u5219 n \u4e3a\u5411\u540e\u5f15\u7528\u3002\u5426\u5219\uff0c\u5982\u679c n \u4e3a\u516b\u8fdb\u5236\u6570\u5b57 (0-7)\uff0c\u5219 n \u4e3a\u4e00\u4e2a\u516b\u8fdb\u5236\u8f6c\u4e49\u503c\u3002 <\/p>
\\nm \u6807\u8bc6\u4e00\u4e2a\u516b\u8fdb\u5236\u8f6c\u4e49\u503c\u6216\u4e00\u4e2a\u5411\u540e\u5f15\u7528\u3002\u5982\u679c \\nm \u4e4b\u524d\u81f3\u5c11\u6709 \r\nnm \u4e2a\u83b7\u5f97\u5b50\u8868\u8fbe\u5f0f\uff0c\u5219 nm \u4e3a\u5411\u540e\u5f15\u7528\u3002\u5982\u679c \\nm \u4e4b\u524d\u81f3\u5c11\u6709 n \u4e2a\u83b7\u53d6\uff0c\u5219 n \u4e3a\u4e00\u4e2a\u540e\u8ddf\u6587\u5b57 m \r\n\u7684\u5411\u540e\u5f15\u7528\u3002\u5982\u679c\u524d\u9762\u7684\u6761\u4ef6\u90fd\u4e0d\u6ee1\u8db3\uff0c\u82e5 n \u548c m \u5747\u4e3a\u516b\u8fdb\u5236\u6570\u5b57 (0-7)\uff0c\u5219 \\nm \u5c06\u5339\u914d\u516b\u8fdb\u5236\u8f6c\u4e49\u503c nm\u3002 <\/p>
\\nml \u5982\u679c n \u4e3a\u516b\u8fdb\u5236\u6570\u5b57 (0-3)\uff0c\u4e14 m \u548c l \u5747\u4e3a\u516b\u8fdb\u5236\u6570\u5b57 (0-7)\uff0c\u5219\u5339\u914d\u516b\u8fdb\u5236\u8f6c\u4e49\u503c nml\u3002 <\/p>
\\un \u5339\u914d n\uff0c\u5176\u4e2d n \u662f\u4e00\u4e2a\u7528\u56db\u4e2a\u5341\u516d\u8fdb\u5236\u6570\u5b57\u8868\u793a\u7684 Unicode \u5b57\u7b26\u3002\u4f8b\u5982\uff0c \\u00A9 \u5339\u914d\u7248\u6743\u7b26\u53f7 (?)\u3002 <\/p>