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正则入门连载！（献给不及格的程序员们）第1/4页

分类: IT文章 • 2022-04-17 20:20:20

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\u4e0d\u53ef\u6253\u5370\u5b57\u7b26\u00a0
\u5217\u51fa\u7528\u4e8e\u8868\u793a\u6b63\u5219\u8868\u8fbe\u5f0f\u4e2d\u975e\u6253\u5370\u5b57\u7b26\u7684\u8f6c\u4e49\u5e8f\u5217\u3002

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background-color: #99ccff;     } div#titlerow \/* provides non-scroll topic title area (requires script) *\/     {     width: 100%; \/* Forces tables to have correct right margin *\/     padding: 0px 10px 0px 22px;      background-color: #99ccff;             } \/* --------------------------------------------------                     HEADING STYLES -------------------------------------------------- *\/ h1, h2, h3, h4     {     font-family: \u7039\u5b29\u7d8b, Verdana, Arial, Helvetica, sans-serif;     margin-bottom: .4em;      margin-top: 1em;     font-weight: bold;     } h1     {     font-size: 120%;     margin-top: 0em;     } div#scrollyes h1 \/* Changes font size for full-scrolling topic *\/     {     font-size: 150%;     } h2     {     font-size: 120%;     } h3     {     font-size: 115%;     } h4     {     font-size: 100%;     } .dtH1, .dtH2, .dtH3, .dtH4     {     margin-left: -18px;     } div#titlerow h1     {     margin-bottom: .2em     } \/* 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Monospace, Courier;\/* This is 100% of 70% *\/     color: #000066;     } pre b, code b     {     letter-spacing: .1em; \/* opens kerning on bold in Syntax\/Code *\/     } pre.syntax     {     font: 100% Courier New, \u7039\u5b29\u7d8b, Monospace, Courier;\/* This is 100% of 70% *\/     background: #cccccc;     padding: 4px 8px;     cursor: text;     margin-top: 1em;     margin-bottom: 1em;      color: #000000;     border-width: 1px;     border-style: solid;     border-color: #999999;     } \/* --------------------------------------------------                       LINK STYLES -------------------------------------------------- *\/ a:link     {     color: #0000ff;     } a:visited     {     color: #0000ff;     } a:hover     {     color: #3366ff;     } \/* --------------------------- MSHelp\\:link - Help HxLinks --------------------------- *\/ MSHelp\\:link     {     text-decoration: underline;      color: #0000ff;      hoverColor: #3366ff;     filterString: ;     }     A.HxLinkTable \/* 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border-color: #999999;     background: transparent;      \/* font-style: normal; *\/     font-weight: normal;     } table.bannerparthead td.product \/* Values for top right cell in running head *\/     {                       \/* Allows for a second text block in the running head *\/     text-align: right;     padding: 2px 5px 0px 5px;     } table.bannertitle td \/* General Values for cells in the bottom row of running head *\/     {     margin: 0px 0px 0px 0px;     padding: 0px 0px 0px 3px;     vertical-align: middle;     border-width: 0px 0px 1px 0px;     border-style: solid;     border-color: #999999;     background: transparent;     font-weight: bold;     } td.button1 \/* Values for button cells *\/     {     width: 14px;     cursor: hand;     } \/* =================================================             STYLES REQUIRED BY THE SCRIPT *\/ \/* --------------------------------------------------                   SAMPLE VIEWER -------------------------------------------------- *\/ div#smpMgrCell     {     display:none;     } table.SampMgr     {     margin: 0px 0px 0px -22px;     } table.SampMgr td     {     padding-left: 22px;     } \/* -------------------------------------------------- RUNNING HEAD BAR POPUP STYLES: See Also, Requirements, MultiLang Filtering -------------------------------------------------- *\/ div.sapop, div.langMenu \/* See Also & Requirements popups *\/     {     position: absolute;     left: 0px;     z-index: 1;     width: 50%;     padding: 0px 8px 5px 26px;     visibility: hidden;     border: 1px solid #999999; \/* Same as all other border colors *\/     background: #ffffcc;     } div.langMenu \/* MultiLang Filter popup *\/     {     padding: 10px 10px 10px 10px;     } div.langMenu ul     {     list-style-type: none;     padding-left: 5px;     margin-left: 0px;     } .lang, .ilang \/* controls the multilang tag styles *\/     {     color: #333333;     font-family: Verdana, Arial, \u7039\u5b29\u7d8b, Helvetica, sans-serif;     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links *\/     {     color: #0000ff; \/* Must match the a:link style color *\/     text-decoration: underline;     } a.synParam:visited \/* ensures parameter popup links are always the unvisited color *\/     {     color: #0000ff; \/* Must match the a:link style color *\/     text-decoration: underline;     } a.synParam:hover \/* parameter popup links *\/     {     color: #3366ff; \/* Must match the a:hover style color *\/     text-decoration: underline;     font-style: italic;     } \/* --------------------------------------------------               EXPAND-COLLAPSE STYLES -------------------------------------------------- *\/ div.expandBody     {     margin: .5em 0em 0em 1.4em;     display:none;     } a.expandLink1     {     font-size: 115%;      } a#ExPand     {     color: #3366ff;      font-weight: bold;      text-decoration: none;      } a#ExPandAll     {     color: #3366ff;      font-weight: bold;      text-decoration: none;      } \/* --------------------------------------------------               GLOSSARY POPUP STYLES            Not used by Visual Studio .NET  -------------------------------------------------- *\/ \/* COMMENT OUT GLOSSARY SECTION \/*div#popUpWindow     { Controlled by the script in the variable L_PopUpBoxStyle_Style     }*\/ a.glosslink:link     {     color: #000000;     } a.glosslink:visited     {     color: #000000;      } a.glosslink:hover     {     color: #000000;     font-style: italic;     } div#popUpWindow h5 \/* Controls the style of the Term in Glossary Popups *\/     {     margin: 5px 5px 5px 5px;     color: #000000;     } div#popUpWindow p \/* Controls the style of the Text in Glossary Popups *\/     {     margin: 5px 5px 5px 5px;     color: #000000;     } p.GLOSSARY_TEXT     {     } div#popUpWindow a \/* Controls the style of the Links in Glossary Popups *\/     {     } *\/ \/* END COMMENT OUT OF GLOSSARY SECTION *\/ \/* END STYLES REQUIRED BY THE SCRIPT  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<p>\u975e\u6253\u5370\u5b57\u7b26\u4e5f\u53ef\u4ee5\u662f\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u7ec4\u6210\u90e8\u5206\u3002\u4e0b\u8868\u5217\u51fa\u4e86\u8868\u793a\u975e\u6253\u5370\u5b57\u7b26\u7684\u8f6c\u4e49\u5e8f\u5217\uff1a<\/p> <div class=\"tablediv\"><table cellspacing=\"0\" class=\"dtTABLE\">\n<tr valign=\"top\">\n<th width=\"17%\">\u5b57\u7b26<\/th> <th width=\"83%\">\u610f\u4e49<\/th> <\/tr>\n<tr valign=\"top\">\n<td width=\"17%\">\\c<i>x<\/i>\n<\/td> <td width=\"83%\">\u5339\u914d\u7531 <i>x<\/i> \u6307\u793a\u7684\u63a7\u5236\u5b57\u7b26\u3002\u4f8b\u5982\uff0c\\cM \u5339\u914d\u4e00\u4e2a Control-M \u6216\u56de\u8f66\u7b26\u3002<i>x<\/i> \u7684\u503c\u5fc5\u987b\u5728 A-Z \u6216 a-z \u4e4b\u95f4\u3002\u5982\u679c\u4e0d\u662f\u8fd9\u6837\uff0c\u5219\u5047\u5b9a c \u5c31\u662f\"c\"\u5b57\u7b26\u672c\u8eab\u3002<\/td> <\/tr>\n<tr valign=\"top\">\n<td width=\"17%\">\\f<\/td> <td width=\"83%\">\u6362\u9875\u7b26\u5339\u914d\u3002\u7b49\u6548\u4e8e \\x0c \u548c 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width=\"17%\">\\v<\/td> <td width=\"83%\">\u5782\u76f4\u5236\u8868\u7b26\u5339\u914d\u3002\u4e0e \\x0b \u548c \\cK \u7b49\u6548\u3002<\/td> <\/tr>\n<\/table><\/div> <h4 class=\"dtH4\">\u8bf7\u53c2\u89c1<\/h4> <p><a>\u6b63\u5219\u8868\u8fbe\u5f0f\u4ecb\u7ecd<\/a><\/p>  <div class=\"footer\">  <hr>\n<p><a>\u5c06\u6587\u6863\u53cd\u9988\u53d1\u9001\u7ed9 Microsoft<\/a><\/p>\n <p><link keywords=\"vxmscCopyright\" tabindex=\"0\"><\/p>\n<\/div>  <\/div>    <\/textarea><br><input onclick=\"runEx('runcode16180')\" type=\"button\" value=\"\u8fd0\u884c\u4ee3\u7801\" class=\"fn-butt\"><input onclick=\"copy2('runcode16180')\" type=\"button\" value=\"\u590d\u5236\u4ee3\u7801\" class=\"fn-butt\"><input onclick=\"doSave(runcode16180)\" type=\"button\" value=\"\u4fdd\u5b58\u4ee3\u7801\" class=\"fn-butt\">[Ctrl+A \u5168\u9009 \u6ce8:<a title=\"\u67e5\u770b\u5177\u4f53\u8be6\u60c5\">\u5f15\u5165\u5916\u90e8Js\u9700\u518d\u5237\u65b0\u4e00\u4e0b\u9875\u9762\u624d\u80fd\u6267\u884c<\/a>]<\/div>\n<br>\u5b57\u7b26\u5339\u914d\u00a0 <br>\u8bf4\u660e\u6b63\u5219\u8868\u8fbe\u5f0f\u5982\u4f55\u4f7f\u7528\u53e5\u70b9\u3001\u8f6c\u4e49\u7b26\u548c\u4e2d\u62ec\u53f7\u521b\u5efa\u8fd4\u56de\u7279\u5b9a\u7ed3\u679c\u7684\u5e8f\u5217\u3002 <br><br>\u53e5\u70b9\u00a0(.)\u00a0\u5339\u914d\u5b57\u7b26\u4e32\u4e2d\u7684\u5404\u79cd\u6253\u5370\u6216\u975e\u6253\u5370\u5b57\u7b26\uff0c\u53ea\u6709\u4e00\u4e2a\u5b57\u7b26\u4f8b\u5916\u3002\u8fd9\u4e2a\u4f8b\u5916\u5c31\u662f\u6362\u884c\u7b26\u00a0(\\n)\u3002\u4e0b\u9762\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u5339\u914d\u00a0aac\u3001abc\u3001acc\u3001adc\u00a0\u7b49\u7b49\uff0c\u4ee5\u53ca\u00a0a1c\u3001a2c\u3001a-c\u00a0\u548c\u00a0a#c\uff1a <br><br>\/a.c\/ 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<br>\u8bf7\u6ce8\u610f\uff0c\u5355\u8bcd\u00a0Chapter\u00a0\u548c\u540e\u9762\u7684\u7a7a\u683c\u7684\u4f4d\u7f6e\u76f8\u5bf9\u4e8e\u4e2d\u62ec\u53f7\u5185\u7684\u5b57\u7b26\u662f\u56fa\u5b9a\u7684\u3002\u4e2d\u62ec\u53f7\u8868\u8fbe\u5f0f\u6307\u5b9a\u7684\u53ea\u662f\u5339\u914d\u7d27\u8ddf\u5728\u5355\u8bcd\u00a0Chapter\u00a0\u548c\u7a7a\u683c\u540e\u9762\u7684\u5355\u4e2a\u5b57\u7b26\u4f4d\u7f6e\u7684\u5b57\u7b26\u96c6\u3002\u8fd9\u662f\u7b2c\u4e5d\u4e2a\u5b57\u7b26\u4f4d\u7f6e\u3002 <br><br>\u82e5\u8981\u4f7f\u7528\u8303\u56f4\u4ee3\u66ff\u5b57\u7b26\u672c\u8eab\u6765\u8868\u793a\u5339\u914d\u5b57\u7b26\u7ec4\uff0c\u8bf7\u4f7f\u7528\u8fde\u5b57\u7b26\u00a0(-)\u00a0\u5c06\u8303\u56f4\u4e2d\u7684\u5f00\u59cb\u5b57\u7b26\u548c\u7ed3\u675f\u5b57\u7b26\u5206\u5f00\u3002\u5355\u4e2a\u5b57\u7b26\u7684\u5b57\u7b26\u503c\u786e\u5b9a\u8303\u56f4\u5185\u7684\u76f8\u5bf9\u987a\u5e8f\u3002\u4e0b\u9762\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u5305\u542b\u8303\u56f4\u8868\u8fbe\u5f0f\uff0c\u8be5\u8303\u56f4\u8868\u8fbe\u5f0f\u7b49\u6548\u4e8e\u4e0a\u9762\u663e\u793a\u7684\u4e2d\u62ec\u53f7\u4e2d\u7684\u5217\u8868\u3002 <br><br>\/Chapter\u00a0[1-5]\/ <br>\u5f53\u4ee5\u8fd9\u79cd\u65b9\u5f0f\u6307\u5b9a\u8303\u56f4\u65f6\uff0c\u5f00\u59cb\u503c\u548c\u7ed3\u675f\u503c\u4e24\u8005\u90fd\u5305\u62ec\u5728\u8303\u56f4\u5185\u3002\u6ce8\u610f\uff0c\u8fd8\u6709\u4e00\u70b9\u5f88\u91cd\u8981\uff0c\u6309\u00a0Unicode\u00a0\u6392\u5e8f\u987a\u5e8f\uff0c\u5f00\u59cb\u503c\u5fc5\u987b\u5728\u7ed3\u675f\u503c\u7684\u524d\u9762\u3002 <br><br>\u82e5\u8981\u5728\u4e2d\u62ec\u53f7\u8868\u8fbe\u5f0f\u4e2d\u5305\u62ec\u8fde\u5b57\u7b26\uff0c\u8bf7\u91c7\u7528\u4e0b\u5217\u65b9\u6cd5\u4e4b\u4e00\uff1a\u00a0 <br><br>\u7528\u53cd\u659c\u625b\u5c06\u5b83\u8f6c\u4e49\uff1a\u00a0 <br>[\\-] <br>\u5c06\u8fde\u5b57\u7b26\u653e\u5728\u4e2d\u62ec\u53f7\u5217\u8868\u7684\u5f00\u59cb\u6216\u7ed3\u5c3e\u3002\u4e0b\u9762\u7684\u8868\u8fbe\u5f0f\u5339\u914d\u6240\u6709\u5c0f\u5199\u5b57\u6bcd\u548c\u8fde\u5b57\u7b26\uff1a\u00a0 <br>[-a-z] <br>[a-z-] <br>\u521b\u5efa\u4e00\u4e2a\u8303\u56f4\uff0c\u5728\u8be5\u8303\u56f4\u4e2d\uff0c\u5f00\u59cb\u5b57\u7b26\u503c\u5c0f\u4e8e\u8fde\u5b57\u7b26\uff0c\u800c\u7ed3\u675f\u5b57\u7b26\u503c\u7b49\u4e8e\u6216\u5927\u4e8e\u8fde\u5b57\u7b26\u3002\u4e0b\u9762\u7684\u4e24\u4e2a\u6b63\u5219\u8868\u8fbe\u5f0f\u90fd\u6ee1\u8db3\u8fd9\u4e00\u8981\u6c42\uff1a\u00a0 <br>[!--] <br>[!-~] <br>\u82e5\u8981\u67e5\u627e\u4e0d\u5728\u5217\u8868\u6216\u8303\u56f4\u5185\u7684\u6240\u6709\u5b57\u7b26\uff0c\u8bf7\u5c06\u63d2\u5165\u7b26\u53f7\u00a0(^)\u00a0\u653e\u5728\u5217\u8868\u7684\u5f00\u5934\u3002\u5982\u679c\u63d2\u5165\u5b57\u7b26\u51fa\u73b0\u5728\u5217\u8868\u4e2d\u7684\u5176\u4ed6\u4efb\u4f55\u4f4d\u7f6e\uff0c\u5219\u5b83\u5339\u914d\u5176\u672c\u8eab\u3002\u4e0b\u9762\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u5339\u914d\u7f16\u53f7\u5927\u4e8e\u00a05\u00a0\u7684\u7ae0\u8282\u6807\u9898\uff1a <br><br>\/Chapter\u00a0[^12345]\/ <br>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u8868\u8fbe\u5f0f\u5728\u7b2c\u4e5d\u4e2a\u4f4d\u7f6e\u5339\u914d\u00a01\u30012\u30013\u30014\u00a0\u6216\u00a05\u00a0\u4e4b\u5916\u7684\u4efb\u4f55\u6570\u5b57\u5b57\u7b26\u3002\u8fd9\u6837\uff0c\u4f8b\u5982\uff0cChapter\u00a07\u00a0\u5c31\u662f\u4e00\u4e2a\u5339\u914d\u9879\uff0cChapter\u00a09\u00a0\u4e5f\u662f\u4e00\u4e2a\u5339\u914d\u9879\u3002 <br><br>\u4e0a\u9762\u7684\u8868\u8fbe\u5f0f\u53ef\u4ee5\u4f7f\u7528\u8fde\u5b57\u7b26\u00a0(-)\u00a0\u6765\u8868\u793a\uff1a <br><br>\/Chapter\u00a0[^1-5]\/ <br>\u4e2d\u62ec\u53f7\u8868\u8fbe\u5f0f\u7684\u5178\u578b\u7528\u9014\u662f\u6307\u5b9a\u4efb\u4f55\u5927\u5199\u6216\u5c0f\u5199\u5b57\u6bcd\u6216\u4efb\u4f55\u6570\u5b57\u7684\u5339\u914d\u3002\u4e0b\u9762\u7684\u8868\u8fbe\u5f0f\u6307\u5b9a\u8fd9\u6837\u7684\u5339\u914d\uff1a <br><br>\/[A-Za-z0-9]\/<br>\u9650\u5b9a\u7b26\u00a0 <br>\u8bf4\u660e\u5f53\u65e0\u6cd5\u6307\u5b9a\u591a\u5c11\u5b57\u7b26\u6784\u6210\u4e00\u4e2a\u5339\u914d\u65f6\u5982\u4f55\u521b\u5efa\u6b63\u5219\u8868\u8fbe\u5f0f\u3002\u00a0 <br><div class=\"htmlarea\">\n<textarea id=\"runcode30406\"><style type=\"text\/css\"> \/* VERSION 9345 Designed for IE5.x. Optimal in IE 6.x CSS for use with Developer Tools Documentation Localizable definitions: font families font sizes *\/ \/* --------------------------------------------------                   MAIN TOPIC STYLES -------------------------------------------------- *\/ div.saveHistory     {     behavior:url(#default#savehistory);     text-decoration: underline     } body \/* This body tag requires the use of one of the sets of banner and\/or text div ids *\/     {     margin: 0px 0px 0px 0px;     padding: 0px 0px 0px 0px;     background: #ffffff;      color: #000000;     font-family: \u7039\u5b29\u7d8b, Verdana, Arial, Helvetica, sans-serif;     font-size: 75%;     width: 100%;     } div#scrollyes \/* Allows topic to scroll with correct margins. 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MSHelp\\:link - Table disambiguation elements *\/     {     } \/* --------------------------- MSHelp\\:ktable - Help links --------------------------- *\/ MSHelp\\:ktable     {     disambiguator: span;     separator: &nbsp|&#32;     prefix: |&#32;     postfix: &nbsp;     filterString: ;     } div.HxLinkTable     {     width: auto; \/* Forces tables to have correct right margins and top spacing *\/     margin-top: -.4em;     visibility: visible;     } ol div.HxLinkTable, ul div.HxLinkTable     {     margin-top: 0em; \/* Forces tables to have correct right margins and top spacing *\/     } table.HxLinkTable \/* Keep in sync with general table settings below *\/     {     width: auto;     margin-top: 1.5em;     margin-bottom: .3em;     margin-left: -1em;     border-width: 1px 1px 0px 0px;     border-style: solid;     border-color: #999999;     background-color: #999999;      font-size: 100%; \/* Text in Table is same size as text outside table *\/     behavior:url(hxlinktable.htc); \/* Attach the behavior to link elements. *\/     } table.HxLinkTable th, table.HxLinkTable td \/* Keep in sync with general table settings below *\/     {      border-style: solid; \/* Creates the cell border and color *\/     border-width: 0px 0px 1px 1px;     border-style: solid;     border-color: #999999;     padding: 4px 6px;     text-align: left;     } table.HxLinkTable th \/* Keep in sync with general table settings below *\/     {      background: #cccccc; \/* Creates the shaded table header row *\/     vertical-align: bottom;     } table.HxLinkTable td \/* Keep in sync with general table settings below *\/     {     background: #ffffff;     vertical-align: top;     } \/* --------------------------------------------------                     TABLE STYLES -------------------------------------------------- *\/ div.tablediv     {     width: 100%; \/* Forces tables to have correct right margins and top spacing *\/     margin-top: -.4em;     } ol div.tablediv, ul div.tablediv, ol div.HxLinkTable, ul div.HxLinkTable     {     margin-top: 0em; \/* Forces tables to have correct right margins and top spacing *\/     } table.dtTABLE     {     width: 100%; \/* Forces tables to have correct right margin *\/     margin-top: .6em;     margin-bottom: .3em;     border-width: 1px 1px 0px 0px;     border-style: solid;     border-color: #999999;     background-color: #999999;      font-size: 100%; \/* Text in Table is same size as text outside table *\/     } table.dtTABLE th, table.dtTABLE td     {      border-style: solid; \/* Creates the cell border and color *\/     border-width: 0px 0px 1px 1px;     border-style: solid;     border-color: #999999;     padding: 4px 6px;     text-align: left;     } table.dtTABLE th         {      background: #cccccc; \/* Creates the shaded table header row *\/     vertical-align: bottom;     } table.dtTABLE td         {     background: #ffffff;     vertical-align: top;     } \/* -------------------------------------------------- ISSUE REPORTING AND MISC LINKS TOPIC FOOTER -------------------------------------------------- *\/ div.footer     {          } div.footer hr     {     color: #999999;     height: 1px;     } \/* --------------------------------------------------              STYLES FOR RUNNING HEADS -------------------------------------------------- *\/ table.bannerparthead, table.bannertitle \/* General values for the Running Head tables *\/     {     position: relative;     left: 0px;     top: 0px;     padding: 0px 0px 0px 0px;     margin: 0px 0px 0px 0px;     width: 100%;     height: 21px;      border-collapse: collapse;     border-style: solid;     border-width: 0px;     background-color: #99ccff;      font-size: 100%;     } table.bannerparthead td \/* General Values for cells in the top row of running head *\/     {     margin: 0px 0px 0px 0px;     padding: 2px 0px 0px 4px;     vertical-align: middle;     \/*border-width: 0px 0px 1px 0px; *\/     border-width: 0px     border-style: solid;     border-color: #999999;     background: transparent;      \/* font-style: normal; *\/     font-weight: normal;     } table.bannerparthead td.product \/* Values for top right cell in running head *\/     {                       \/* Allows for a second text block in the running head *\/     text-align: right;     padding: 2px 5px 0px 5px;     } table.bannertitle td \/* General Values for cells in the bottom row of running head *\/     {     margin: 0px 0px 0px 0px;     padding: 0px 0px 0px 3px;     vertical-align: middle;     border-width: 0px 0px 1px 0px;     border-style: solid;     border-color: #999999;     background: transparent;     font-weight: bold;     } td.button1 \/* Values for button cells *\/     {     width: 14px;     cursor: hand;     } \/* =================================================             STYLES REQUIRED BY THE SCRIPT *\/ \/* --------------------------------------------------                   SAMPLE VIEWER -------------------------------------------------- *\/ div#smpMgrCell     {     display:none;     } table.SampMgr     {     margin: 0px 0px 0px -22px;     } table.SampMgr td     {     padding-left: 22px;     } \/* -------------------------------------------------- RUNNING HEAD BAR POPUP STYLES: See Also, Requirements, MultiLang Filtering -------------------------------------------------- *\/ div.sapop, div.langMenu \/* See Also & Requirements popups *\/     {     position: absolute;     left: 0px;     z-index: 1;     width: 50%;     padding: 0px 8px 5px 26px;     visibility: hidden;     border: 1px solid #999999; \/* Same as all other border colors *\/     background: #ffffcc;     } div.langMenu \/* MultiLang Filter popup *\/     {     padding: 10px 10px 10px 10px;     } div.langMenu ul     {     list-style-type: none;     padding-left: 5px;     margin-left: 0px;     } .lang, .ilang \/* controls the multilang tag styles *\/     {     color: #333333;     font-family: Verdana, Arial, \u7039\u5b29\u7d8b, Helvetica, sans-serif;     font-size: 80%;     font-weight: normal;     font-style: normal;     } h1 .lang, h1 .ilang      {     font-size: 80%;     } div.filtered     {     margin-top: .6em;     margin-bottom: .6em;     margin-left: -7px;     padding: 0px 0px 0px 6px;     border-left: 1px solid #999999;     background: #ffffff;     } div.filtered h1, div.filtered h2, div.filtered h3, div.filtered h4     {     margin-left: -22px;     } div.filtered span.lang     {     position: relative;     left: 0px;     } \/* --------------------------------------------------               PARAMETER POPUP STYLES -------------------------------------------------- *\/ div.reftip \/* Defines the RefTip popup in Syntax *\/     {     position: absolute;     z-index: 1;     visibility: hidden;     border: 1px solid #999999;     background: #ffffcc; \/*    padding: 0px 0px 0px 0px; *\/         } div.reftip dl \/* Sets margin around the text within the popup *\/     {     margin: 3px 8px 8px 8px;     } a.synParam \/* parameter popup links *\/     {     color: #0000ff; \/* Must match the a:link style color *\/     text-decoration: underline;     } a.synParam:visited \/* ensures parameter popup links are always the unvisited color *\/     {     color: #0000ff; \/* Must match the a:link style color *\/     text-decoration: underline;     } a.synParam:hover \/* parameter popup links *\/     {     color: #3366ff; \/* Must match the a:hover style color *\/     text-decoration: underline;     font-style: italic;     } \/* --------------------------------------------------               EXPAND-COLLAPSE STYLES -------------------------------------------------- *\/ div.expandBody     {     margin: .5em 0em 0em 1.4em;     display:none;     } a.expandLink1     {     font-size: 115%;      } a#ExPand     {     color: #3366ff;      font-weight: bold;      text-decoration: none;      } a#ExPandAll     {     color: #3366ff;      font-weight: bold;      text-decoration: none;      } \/* --------------------------------------------------               GLOSSARY POPUP STYLES            Not used by Visual Studio .NET  -------------------------------------------------- *\/ \/* COMMENT OUT GLOSSARY SECTION \/*div#popUpWindow     { Controlled by the script in the variable L_PopUpBoxStyle_Style     }*\/ a.glosslink:link     {     color: #000000;     } a.glosslink:visited     {     color: #000000;      } a.glosslink:hover     {     color: #000000;     font-style: italic;     } div#popUpWindow h5 \/* Controls the style of the Term in Glossary Popups *\/     {     margin: 5px 5px 5px 5px;     color: #000000;     } div#popUpWindow p \/* Controls the style of the Text in Glossary Popups *\/     {     margin: 5px 5px 5px 5px;     color: #000000;     } p.GLOSSARY_TEXT     {     } div#popUpWindow a \/* Controls the style of the Links in Glossary Popups *\/     {     } *\/ \/* END COMMENT OUT OF GLOSSARY SECTION *\/ \/* END STYLES REQUIRED BY THE SCRIPT  ================================================== *\/ <\/style>\n<title>\u9650\u5b9a\u7b26<\/title>\n<xml><toctitle title=\"\u9650\u5b9a\u7b26\"><\/toctitle><rltitle title=\"\u9650\u5b9a\u7b26 (JScript .NET)\"><\/rltitle><keyword index=\"A\" term=\"jsreconQuantifiers\"><\/keyword><keyword index=\"A\" term=\"jsreconQuantifiers\"><\/keyword><keyword index=\"K\" term=\"\u6b63\u5219\u8868\u8fbe\u5f0f, \u9650\u5b9a\u7b26\"><\/keyword><keyword index=\"K\" term=\"\u6b63\u5219\u8868\u8fbe\u5f0f\u4e2d\u7684\u9650\u5b9a\u7b26\"><\/keyword><attr name=\"DevLang\" value=\"JScript\"><\/attr><attr name=\"DevLangVers\" value=\"kbJScript\"><\/attr><attr name=\"DocSet\" value=\"JScript\"><\/attr><attr name=\"DocSet\" value=\"Visual Studio\"><\/attr><attr name=\"Product\" value=\"VS\"><\/attr><attr name=\"ProductVers\" value=\"kbVS700\"><\/attr><attr name=\"Technology\" value=\"ManagedCode\"><\/attr><attr name=\"TechnologyVers\" value=\"kbManagedCode\"><\/attr><attr name=\"TopicType\" value=\"kbArticle\"><\/attr><attr name=\"TargetOS\" value=\"Windows\"><\/attr><attr name=\"Locale\" value=\"kbChineseSimp\"><\/attr><\/xml><meta name=\"rtfFileName\" content=\"js7reregexp.rtf\">\n<meta name=\"save\" content=\"history\">\n<meta name=\"msdnID\" content=\"_731808\">\n<div id=\"nsbanner\"> <div id=\"bannerrow1\"> <table class=\"bannerparthead\" cellspacing=\"0\"><tr id=\"hdr\">\n<td class=\"runninghead\" nowrap>JScript .NET<\/td> <td class=\"product\" nowrap>&nbsp;<\/td> <\/tr><\/table>\n<\/div> <div id=\"TitleRow\"> <h1 class=\"dtH1\">\n<a name=\"jsreconquantifiers\"><\/a>\u9650\u5b9a\u7b26<\/h1> <\/div>\n<\/div>  <div id=\"nstext\" valign=\"bottom\"> <p>\u5982\u679c\u60a8\u4e0d\u80fd\u6307\u5b9a\u6784\u6210\u5339\u914d\u7684\u5b57\u7b26\u7684\u6570\u91cf\uff0c\u90a3\u4e48\u6b63\u5219\u8868\u8fbe\u5f0f\u652f\u6301\u9650\u5b9a\u7b26\u7684\u6982\u5ff5\u3002\u8fd9\u4e9b\u9650\u5b9a\u7b26\u4f7f\u60a8\u80fd\u591f\u6307\u5b9a\uff0c\u4e3a\u4f7f\u5339\u914d\u4e3a\u771f\uff0c\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u67d0\u4e2a\u7ed9\u5b9a\u7ec4\u4ef6\u5fc5\u987b\u51fa\u73b0\u591a\u5c11\u6b21\u3002<\/p> <p>\u4e0b\u8868\u8bf4\u660e\u5404\u79cd\u9650\u5b9a\u7b26\u4ee5\u53ca\u5b83\u4eec\u7684\u542b\u4e49\uff1a<\/p> <div class=\"tablediv\"><table cellspacing=\"0\" class=\"dtTABLE\">\n<tr valign=\"top\">\n<th width=\"17%\">\u5b57\u7b26<\/th> <th width=\"83%\">\u8bf4\u660e<\/th> <\/tr>\n<tr valign=\"top\">\n<td width=\"17%\">* <\/td> <td width=\"83%\">\u96f6\u6b21\u6216\u591a\u6b21\u5339\u914d\u524d\u9762\u7684\u5b57\u7b26\u6216\u5b50\u8868\u8fbe\u5f0f\u3002\u4f8b\u5982\uff0czo* \u5339\u914d z \u548c zoo\u3002* \u7b49\u6548\u4e8e {0,}\u3002<\/td> <\/tr>\n<tr valign=\"top\">\n<td width=\"17%\">+ <\/td> <td width=\"83%\">\u4e00\u6b21\u6216\u591a\u6b21\u5339\u914d\u524d\u9762\u7684\u5b57\u7b26\u6216\u5b50\u8868\u8fbe\u5f0f\u3002\u4f8b\u5982\uff0czo+ \u5339\u914d zo \u548c zoo\uff0c\u4f46\u4e0d\u5339\u914d z\u3002+ \u7b49\u6548\u4e8e {1,}\u3002<\/td> <\/tr>\n<tr valign=\"top\">\n<td width=\"17%\">? <\/td> <td width=\"83%\">\u96f6\u6b21\u6216\u4e00\u6b21\u5339\u914d\u524d\u9762\u7684\u5b57\u7b26\u6216\u5b50\u8868\u8fbe\u5f0f\u3002\u4f8b\u5982\uff0cdo(es)? \u5339\u914d do \u6216 does \u4e2d\u7684 do\u3002? \u7b49\u6548\u4e8e {0,1}<\/td> <\/tr>\n<tr valign=\"top\">\n<td width=\"17%\">{<i>n<\/i>}<\/td> <td width=\"83%\">\n<i>n <\/i>\u662f\u975e\u8d1f\u6574\u6570\u3002\u6b63\u597d\u5339\u914d <i>n<\/i> \u6b21\u3002\u4f8b\u5982\uff0co{2} \u4e0d\u5339\u914d Bob \u4e2d\u7684 o\uff0c\u4f46\u5339\u914d food \u4e2d\u7684\u4e24\u4e2a o\u3002<\/td> <\/tr>\n<tr valign=\"top\">\n<td width=\"17%\">{<i>n<\/i>,}<\/td> <td width=\"83%\">\n<i>n <\/i>\u662f\u975e\u8d1f\u6574\u6570\u3002\u81f3\u5c11\u5339\u914d <i>n <\/i>\u6b21\u3002\u4f8b\u5982\uff0co{2,} \u4e0d\u5339\u914d Bob \u4e2d\u7684 o\uff0c\u800c\u5339\u914d foooood \u4e2d\u7684\u6240\u6709 o\u3002o{1,} \u7b49\u6548\u4e8e o+\u3002o{0,} \u7b49\u6548\u4e8e o*\u3002<\/td> <\/tr>\n<tr valign=\"top\">\n<td width=\"17%\">{<i>n<\/i>,<i>m<\/i>}<\/td> <td width=\"83%\">\n<i>m<\/i> \u548c <i>n<\/i> \u662f\u975e\u8d1f\u6574\u6570\uff0c\u5176\u4e2d <i>n<\/i> &lt;= <i>m<\/i>\u3002\u81f3\u5c11\u5339\u914d <i>n<\/i> \u6b21\uff0c\u81f3\u591a\u5339\u914d <i>m<\/i> \u6b21\u3002\u4f8b\u5982\uff0co{1,3} \u5339\u914d fooooood \u4e2d\u7684\u5934\u4e09\u4e2a o\u3002o{0,1} \u7b49\u6548\u4e8e o?.\u6ce8\u610f\uff1a\u60a8\u4e0d\u80fd\u5c06\u7a7a\u683c\u63d2\u5165\u9017\u53f7\u548c\u6570\u5b57\u4e4b\u95f4\u3002<\/td> <\/tr>\n<\/table><\/div> <p>\u7531\u4e8e\u7ae0\u8282\u7f16\u53f7\u5728\u5927\u7684\u8f93\u5165\u6587\u6863\u4e2d\u4f1a\u5f88\u53ef\u80fd\u8d85\u8fc7\u4e5d\uff0c\u6240\u4ee5\u60a8\u9700\u8981\u4e00\u79cd\u65b9\u5f0f\u6765\u5904\u7406\u4e24\u4f4d\u6216\u4e09\u4f4d\u7ae0\u8282\u7f16\u53f7\u3002\u9650\u5b9a\u7b26\u7ed9\u60a8\u8fd9\u79cd\u80fd\u529b\u3002\u4e0b\u9762\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u5339\u914d\u7f16\u53f7\u4e3a\u4efb\u4f55\u4f4d\u6570\u7684\u7ae0\u8282\u6807\u9898\uff1a<\/p> <pre class=\"code\">\/Chapter [1-9][0-9]*\/<\/pre> <p>\u8bf7\u6ce8\u610f\uff0c\u9650\u5b9a\u7b26\u51fa\u73b0\u5728\u8303\u56f4\u8868\u8fbe\u5f0f\u4e4b\u540e\u3002\u56e0\u6b64\uff0c\u5b83\u5e94\u7528\u4e8e\u6574\u4e2a\u8303\u56f4\u8868\u8fbe\u5f0f\uff0c\u5728\u672c\u4f8b\u4e2d\uff0c\u53ea\u6307\u5b9a\u4ece 0 \u5230 9 \u7684\u6570\u5b57\uff08\u5305\u62ec 0 \u548c 9\uff09\u3002<\/p> <p>\u8fd9\u91cc\u4e0d\u4f7f\u7528 + \u9650\u5b9a\u7b26\uff0c\u56e0\u4e3a\u5728\u7b2c\u4e8c\u4e2a\u4f4d\u7f6e\u6216\u540e\u9762\u7684\u4f4d\u7f6e\u4e0d\u4e00\u5b9a\u9700\u8981\u6709\u4e00\u4e2a\u6570\u5b57\u3002\u4e5f\u4e0d\u4f7f\u7528 \uff1f \u5b57\u7b26\uff0c\u56e0\u4e3a\u5b83\u5c06\u7ae0\u8282\u7f16\u53f7\u9650\u5236\u5230\u53ea\u6709\u4e24\u4f4d\u6570\u3002\u60a8\u9700\u8981\u81f3\u5c11\u5339\u914d Chapter \u548c\u7a7a\u683c\u5b57\u7b26\u540e\u9762\u7684\u4e00\u4e2a\u6570\u5b57\u3002<\/p> <p>\u5982\u679c\u60a8\u77e5\u9053\u7ae0\u8282\u7f16\u53f7\u88ab\u9650\u5236\u4e3a\u53ea\u6709 99 \u7ae0\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e0b\u9762\u7684\u8868\u8fbe\u5f0f\u6765\u81f3\u5c11\u6307\u5b9a\u4e00\u4f4d\u4f46\u81f3\u591a\u4e24\u4f4d\u6570\u5b57\u3002<\/p> <pre class=\"code\">\/Chapter [0-9]{1,2}\/<\/pre> <p>\u4e0a\u9762\u7684\u8868\u8fbe\u5f0f\u7684\u7f3a\u70b9\u662f\uff0c\u5927\u4e8e 99 \u7684\u7ae0\u8282\u7f16\u53f7\u4ecd\u53ea\u5339\u914d\u5f00\u5934\u4e24\u4f4d\u6570\u5b57\u3002\u53e6\u4e00\u4e2a\u7f3a\u70b9\u662f Chapter 0 \u4e5f\u5c06\u5339\u914d\u3002\u53ea\u5339\u914d\u4e24\u4f4d\u6570\u5b57\u7684\u66f4\u597d\u7684\u8868\u8fbe\u5f0f\u5982\u4e0b\uff1a<\/p> <pre class=\"code\">\/Chapter [1-9][0-9]?\/<\/pre> <p>\u6216<\/p> <pre class=\"code\">\/Chapter [1-9][0-9]{0,1}\/<\/pre> <p>*\u3001+ \u548c ? \u9650\u5b9a\u7b26\u90fd\u88ab\u79f0\u4e3a\"\u8d2a\u5fc3\u7684\"\uff0c\u56e0\u4e3a\u5b83\u4eec\u5339\u914d\u5c3d\u53ef\u80fd\u591a\u7684\u6587\u672c\u3002\u4f46\u662f\uff0c\u6709\u65f6\u60a8\u53ea\u9700\u8981\u6700\u5c0f\u7684\u5339\u914d\u3002<\/p> <p>\u4f8b\u5982\uff0c\u60a8\u53ef\u80fd\u641c\u7d22 HTML \u6587\u6863\uff0c\u4ee5\u67e5\u627e\u62ec\u5728 H1 \u6807\u8bb0\u5185\u7684\u7ae0\u8282\u6807\u9898\u3002\u8be5\u6587\u672c\u5728\u60a8\u7684\u6587\u6863\u4e2d\u5982\u4e0b\uff1a<\/p> <pre class=\"code\">&lt;H1&gt;Chapter 1 &#150; Introduction to Regular Expressions&lt;\/H1&gt;<\/pre> <p>\u4e0b\u9762\u7684\u8868\u8fbe\u5f0f\u5339\u914d\u4ece\u5f00\u59cb\u5c0f\u4e8e\u7b26\u53f7 (&lt;) \u5230\u5173\u95ed H1 \u6807\u8bb0\u7684\u5927\u4e8e\u7b26\u53f7 (&gt;) \u4e4b\u95f4\u7684\u6240\u6709\u5185\u5bb9\u3002<\/p> <pre class=\"code\">\/&lt;.*&gt;\/<\/pre> <p>\u5982\u679c\u60a8\u53ea\u9700\u8981\u5339\u914d\u5f00\u59cb H1 \u6807\u8bb0\uff0c\u4e0b\u9762\u7684\"\u975e\u8d2a\u5fc3\"\u8868\u8fbe\u5f0f\u53ea\u5339\u914d &lt;H1&gt;\u3002<\/p> <pre class=\"code\">\/&lt;.*?&gt;\/<\/pre> <p>\u901a\u8fc7\u5728 *\u3001+ \u6216 ? \u9650\u5b9a\u7b26\u4e4b\u540e\u653e\u7f6e ?\uff0c\u8be5\u8868\u8fbe\u5f0f\u4ece\"\u8d2a\u5fc3\"\u8868\u8fbe\u5f0f\u8f6c\u6362\u4e3a\"\u975e\u8d2a\u5fc3\"\u8868\u8fbe\u5f0f\u6216\u8005\u6700\u5c0f\u5339\u914d\u3002<\/p> <h4 class=\"dtH4\">\u8bf7\u53c2\u89c1<\/h4> <p><a>\u6b63\u5219\u8868\u8fbe\u5f0f\u4ecb\u7ecd<\/a><\/p>  <div class=\"footer\">  <hr>\n<p><a>\u5c06\u6587\u6863\u53cd\u9988\u53d1\u9001\u7ed9 Microsoft<\/a><\/p>\n <p><link keywords=\"vxmscCopyright\" tabindex=\"0\"><\/p>\n<\/div>  <\/div>    <\/textarea><br><input onclick=\"runEx('runcode30406')\" type=\"button\" value=\"\u8fd0\u884c\u4ee3\u7801\" class=\"fn-butt\"><input onclick=\"copy2('runcode30406')\" type=\"button\" value=\"\u590d\u5236\u4ee3\u7801\" class=\"fn-butt\"><input onclick=\"doSave(runcode30406)\" type=\"button\" value=\"\u4fdd\u5b58\u4ee3\u7801\" class=\"fn-butt\">[Ctrl+A \u5168\u9009 \u6ce8:<a title=\"\u67e5\u770b\u5177\u4f53\u8be6\u60c5\">\u5f15\u5165\u5916\u90e8Js\u9700\u518d\u5237\u65b0\u4e00\u4e0b\u9875\u9762\u624d\u80fd\u6267\u884c<\/a>]<\/div>\n<br>\u5b9a\u4f4d\u70b9\u00a0 <br>\u8bf4\u660e\u5982\u4f55\u5c06\u6b63\u5219\u8868\u8fbe\u5f0f\u56fa\u5b9a\u5230\u884c\u9996\u6216\u884c\u5c3e\uff0c\u4ee5\u53ca\u5982\u4f55\u521b\u5efa\u5728\u5355\u8bcd\u5185\u3001\u5728\u5355\u8bcd\u7684\u5f00\u5934\u6216\u8005\u5728\u5355\u8bcd\u7684\u7ed3\u5c3e\u51fa\u73b0\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u3002<br><div class=\"htmlarea\">\n<textarea id=\"runcode59537\"><style type=\"text\/css\"> \/* VERSION 9345 Designed for IE5.x. Optimal in IE 6.x CSS for use with Developer Tools Documentation Localizable definitions: font families font sizes *\/ \/* --------------------------------------------------                   MAIN TOPIC STYLES -------------------------------------------------- *\/ div.saveHistory     {     behavior:url(#default#savehistory);     text-decoration: underline     } body \/* This body tag requires the use of one of the sets of banner and\/or text div ids *\/     {     margin: 0px 0px 0px 0px;     padding: 0px 0px 0px 0px;     background: #ffffff;      color: #000000;     font-family: \u7039\u5b29\u7d8b, Verdana, Arial, Helvetica, sans-serif;     font-size: 75%;     width: 100%;     } div#scrollyes \/* Allows topic to scroll with correct margins. Cannot be used with running head banner *\/     {     \/* Must immediately follow <body>. *\/     padding: 2px 15px 2px 22px;     width: 100%;     } div#nsbanner \/* Creates Nonscrolling banner region *\/     {     position: relative;     left: 0px;     padding: 0px 0px 0px 0px;     border-bottom: 1px solid #999999;     } div#nstext \/* Creates the scrolling text area for Nonscrolling region topic *\/     {     padding: 5px 10px 0px 22px;      } div#scrbanner \/* Creates the running head bar in a full-scroll topic *\/     {     \/* Allows topic to scroll. *\/     margin: 0px 0px 0px 0px;     padding: 0px 0px 0px 0px;     border-bottom: 1px solid #999999;     } div#scrtext \/* Creates the text area in a full-scroll topic *\/     {   \/* Allows topic to scroll. *\/ \/*    width: 100%; \/* Forces tables to have correct right margin *\/*\/     padding: 0px 10px 0px 22px;      } div#bannerrow1 \/* provides full-width color to top row in running head (requires script) *\/     {     background-color: #99ccff;     } div#titlerow \/* provides non-scroll topic title area (requires script) *\/     {     width: 100%; \/* Forces tables to have correct right margin *\/     padding: 0px 10px 0px 22px;      background-color: #99ccff;             } \/* --------------------------------------------------                     HEADING STYLES -------------------------------------------------- *\/ h1, h2, h3, h4     {     font-family: \u7039\u5b29\u7d8b, Verdana, Arial, Helvetica, sans-serif;     margin-bottom: .4em;      margin-top: 1em;     font-weight: bold;     } h1     {     font-size: 120%;     margin-top: 0em;     } div#scrollyes h1 \/* Changes font size for full-scrolling topic *\/     {     font-size: 150%;     } h2     {     font-size: 120%;     } h3     {     font-size: 115%;     } h4     {     font-size: 100%;     } .dtH1, .dtH2, .dtH3, .dtH4     {     margin-left: -18px;     } div#titlerow h1     {     margin-bottom: .2em     } \/* --------------------------------------------------                      TEXT STYLES -------------------------------------------------- *\/ p     {     margin: .5em 0em .5em 0em;     } blockquote.dtBlock     {     margin: .5em 1.5em .5em 1.5em;     } div#dtHoverText     {     color: #000066;     } .normal     {     margin: .5em 0em .5em 0em;     } .fineprint     {     font-size: 110%; \/* 90% of 70% *\/     } .indent     {     margin: .5em 1.5em .5em 1.5em;     } .topicstatus \/* Topic Status Boilerplate class *\/     {     display: block;     color: red;     } \/* --------------------------------------------------                      LABEL STYLES -------------------------------------------------- *\/ p.label     {     margin-top: 1em;     } p.labelproc     {     margin-top: 1em;     color: #000066;     } \/* --------------------------------------------------                     GRAPHIC STYLES -------------------------------------------------- *\/ img     {     border: none;      } \/* --------------------------------------------------                      LIST STYLES -------------------------------------------------- *\/ ol, ul     {     margin: .5em 0em 0em 2em;      } li     {     margin-bottom: .5em;     } ul p, ol p, dl p     {     margin-left: 0em;     } ul p.label, ol p.label     {     margin-top: .5em;     } \/* --------------------------------------------------                DEFINITION LIST STYLES -------------------------------------------------- *\/ dl     {     margin-top: 0em;      padding-left: 1px; \/* Prevents italic-letter descenders from being cut off *\/     } dd     {     margin-bottom: 0em;       margin-left: 1.5em;      } dt     {     margin-top: .5em;      } \/* --------------------------------------------------            CODE, SYNTAX, and REFTIP STYLES -------------------------------------------------- *\/ pre     {     margin-top: .5em;     margin-bottom: .5em;      } pre, code, .code     {     font: 100% \u7039\u5b29\u7d8b, Courier New, Monospace, Courier;\/* This is 100% of 70% *\/     color: #000066;     } pre b, code b     {     letter-spacing: .1em; \/* opens kerning on bold in Syntax\/Code *\/     } pre.syntax     {     font: 100% Courier New, \u7039\u5b29\u7d8b, Monospace, Courier;\/* This is 100% of 70% *\/     background: #cccccc;     padding: 4px 8px;     cursor: text;     margin-top: 1em;     margin-bottom: 1em;      color: #000000;     border-width: 1px;     border-style: solid;     border-color: #999999;     } \/* --------------------------------------------------                       LINK STYLES -------------------------------------------------- *\/ a:link     {     color: #0000ff;     } a:visited     {     color: #0000ff;     } a:hover     {     color: #3366ff;     } \/* --------------------------- MSHelp\\:link - Help HxLinks --------------------------- *\/ MSHelp\\:link     {     text-decoration: underline;      color: #0000ff;      hoverColor: #3366ff;     filterString: ;     }     A.HxLinkTable \/* MSHelp\\:link - Table disambiguation elements *\/     {     } \/* --------------------------- MSHelp\\:ktable - Help links --------------------------- *\/ MSHelp\\:ktable     {     disambiguator: span;     separator: &nbsp|&#32;     prefix: |&#32;     postfix: &nbsp;     filterString: ;     } div.HxLinkTable     {     width: auto; \/* Forces tables to have correct right margins and top spacing *\/     margin-top: -.4em;     visibility: visible;     } ol div.HxLinkTable, ul div.HxLinkTable     {     margin-top: 0em; \/* Forces tables to have correct right margins and top spacing *\/     } table.HxLinkTable \/* Keep in sync with general table settings below *\/     {     width: auto;     margin-top: 1.5em;     margin-bottom: .3em;     margin-left: -1em;     border-width: 1px 1px 0px 0px;     border-style: solid;     border-color: #999999;     background-color: #999999;      font-size: 100%; \/* Text in Table is same size as text outside table *\/     behavior:url(hxlinktable.htc); \/* Attach the behavior to link elements. *\/     } table.HxLinkTable th, table.HxLinkTable td \/* Keep in sync with general table settings below *\/     {      border-style: solid; \/* Creates the cell border and color *\/     border-width: 0px 0px 1px 1px;     border-style: solid;     border-color: #999999;     padding: 4px 6px;     text-align: left;     } table.HxLinkTable th \/* Keep in sync with general table settings below *\/     {      background: #cccccc; \/* Creates the shaded table header row *\/     vertical-align: bottom;     } table.HxLinkTable td \/* Keep in sync with general table settings below *\/     {     background: #ffffff;     vertical-align: top;     } \/* --------------------------------------------------                     TABLE STYLES -------------------------------------------------- *\/ div.tablediv     {     width: 100%; \/* Forces tables to have correct right margins and top spacing *\/     margin-top: -.4em;     } ol div.tablediv, ul div.tablediv, ol div.HxLinkTable, ul div.HxLinkTable     {     margin-top: 0em; \/* Forces tables to have correct right margins and top spacing *\/     } table.dtTABLE     {     width: 100%; \/* Forces tables to have correct right margin *\/     margin-top: .6em;     margin-bottom: .3em;     border-width: 1px 1px 0px 0px;     border-style: solid;     border-color: #999999;     background-color: #999999;      font-size: 100%; \/* Text in Table is same size as text outside table *\/     } table.dtTABLE th, table.dtTABLE td     {      border-style: solid; \/* Creates the cell border and color *\/     border-width: 0px 0px 1px 1px;     border-style: solid;     border-color: #999999;     padding: 4px 6px;     text-align: left;     } table.dtTABLE th         {      background: #cccccc; \/* Creates the shaded table header row *\/     vertical-align: bottom;     } table.dtTABLE td         {     background: #ffffff;     vertical-align: top;     } \/* -------------------------------------------------- ISSUE REPORTING AND MISC LINKS TOPIC FOOTER -------------------------------------------------- *\/ div.footer     {          } div.footer hr     {     color: #999999;     height: 1px;     } \/* --------------------------------------------------              STYLES FOR RUNNING HEADS -------------------------------------------------- *\/ table.bannerparthead, table.bannertitle \/* General values for the Running Head tables *\/     {     position: relative;     left: 0px;     top: 0px;     padding: 0px 0px 0px 0px;     margin: 0px 0px 0px 0px;     width: 100%;     height: 21px;      border-collapse: collapse;     border-style: solid;     border-width: 0px;     background-color: #99ccff;      font-size: 100%;     } table.bannerparthead td \/* General Values for cells in the top row of running head *\/     {     margin: 0px 0px 0px 0px;     padding: 2px 0px 0px 4px;     vertical-align: middle;     \/*border-width: 0px 0px 1px 0px; *\/     border-width: 0px     border-style: solid;     border-color: #999999;     background: transparent;      \/* font-style: normal; *\/     font-weight: normal;     } table.bannerparthead td.product \/* Values for top right cell in running head *\/     {                       \/* Allows for a second text block in the running head *\/     text-align: right;     padding: 2px 5px 0px 5px;     } table.bannertitle td \/* General Values for cells in the bottom row of running head *\/     {     margin: 0px 0px 0px 0px;     padding: 0px 0px 0px 3px;     vertical-align: middle;     border-width: 0px 0px 1px 0px;     border-style: solid;     border-color: #999999;     background: transparent;     font-weight: bold;     } td.button1 \/* Values for button cells *\/     {     width: 14px;     cursor: hand;     } \/* =================================================             STYLES REQUIRED BY THE SCRIPT *\/ \/* --------------------------------------------------                   SAMPLE VIEWER -------------------------------------------------- *\/ div#smpMgrCell     {     display:none;     } table.SampMgr     {     margin: 0px 0px 0px -22px;     } table.SampMgr td     {     padding-left: 22px;     } \/* -------------------------------------------------- RUNNING HEAD BAR POPUP STYLES: See Also, Requirements, MultiLang Filtering -------------------------------------------------- *\/ div.sapop, div.langMenu \/* See Also & Requirements popups *\/     {     position: absolute;     left: 0px;     z-index: 1;     width: 50%;     padding: 0px 8px 5px 26px;     visibility: hidden;     border: 1px solid #999999; \/* Same as all other border colors *\/     background: #ffffcc;     } div.langMenu \/* MultiLang Filter popup *\/     {     padding: 10px 10px 10px 10px;     } div.langMenu ul     {     list-style-type: none;     padding-left: 5px;     margin-left: 0px;     } .lang, .ilang \/* controls the multilang tag styles *\/     {     color: #333333;     font-family: Verdana, Arial, \u7039\u5b29\u7d8b, Helvetica, sans-serif;     font-size: 80%;     font-weight: normal;     font-style: normal;     } h1 .lang, h1 .ilang      {     font-size: 80%;     } div.filtered     {     margin-top: .6em;     margin-bottom: .6em;     margin-left: -7px;     padding: 0px 0px 0px 6px;     border-left: 1px solid #999999;     background: #ffffff;     } div.filtered h1, div.filtered h2, div.filtered h3, div.filtered h4     {     margin-left: -22px;     } div.filtered span.lang     {     position: relative;     left: 0px;     } \/* --------------------------------------------------               PARAMETER POPUP STYLES -------------------------------------------------- *\/ div.reftip \/* Defines the RefTip popup in Syntax *\/     {     position: absolute;     z-index: 1;     visibility: hidden;     border: 1px solid #999999;     background: #ffffcc; \/*    padding: 0px 0px 0px 0px; *\/         } div.reftip dl \/* Sets margin around the text within the popup *\/     {     margin: 3px 8px 8px 8px;     } a.synParam \/* parameter popup links *\/     {     color: #0000ff; \/* Must match the a:link style color *\/     text-decoration: underline;     } a.synParam:visited \/* ensures parameter popup links are always the unvisited color *\/     {     color: #0000ff; \/* Must match the a:link style color *\/     text-decoration: underline;     } a.synParam:hover \/* parameter popup links *\/     {     color: #3366ff; \/* Must match the a:hover style color *\/     text-decoration: underline;     font-style: italic;     } \/* --------------------------------------------------               EXPAND-COLLAPSE STYLES -------------------------------------------------- *\/ div.expandBody     {     margin: .5em 0em 0em 1.4em;     display:none;     } a.expandLink1     {     font-size: 115%;      } a#ExPand     {     color: #3366ff;      font-weight: bold;      text-decoration: none;      } a#ExPandAll     {     color: #3366ff;      font-weight: bold;      text-decoration: none;      } \/* --------------------------------------------------               GLOSSARY POPUP STYLES            Not used by Visual Studio .NET  -------------------------------------------------- *\/ \/* COMMENT OUT GLOSSARY SECTION \/*div#popUpWindow     { Controlled by the script in the variable L_PopUpBoxStyle_Style     }*\/ a.glosslink:link     {     color: #000000;     } a.glosslink:visited     {     color: #000000;      } a.glosslink:hover     {     color: #000000;     font-style: italic;     } div#popUpWindow h5 \/* Controls the style of the Term in Glossary Popups *\/     {     margin: 5px 5px 5px 5px;     color: #000000;     } div#popUpWindow p \/* Controls the style of the Text in Glossary Popups *\/     {     margin: 5px 5px 5px 5px;     color: #000000;     } p.GLOSSARY_TEXT     {     } div#popUpWindow a \/* Controls the style of the Links in Glossary Popups *\/     {     } *\/ \/* END COMMENT OUT OF GLOSSARY SECTION *\/ \/* END STYLES REQUIRED BY THE SCRIPT  ================================================== *\/ <\/style>\n<title>\u5b9a\u4f4d\u70b9<\/title>\n<xml><toctitle title=\"\u5b9a\u4f4d\u70b9\"><\/toctitle><rltitle title=\"\u5b9a\u4f4d\u70b9 (JScript .NET)\"><\/rltitle><keyword index=\"A\" term=\"jsreconAnchors\"><\/keyword><keyword index=\"A\" term=\"jsreconAnchors\"><\/keyword><keyword index=\"K\" term=\"\u6b63\u5219\u8868\u8fbe\u5f0f, \u5b9a\u4f4d\u70b9\"><\/keyword><keyword index=\"K\" term=\"\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u5b9a\u4f4d\u70b9\"><\/keyword><attr name=\"DevLang\" value=\"JScript\"><\/attr><attr name=\"DevLangVers\" value=\"kbJScript\"><\/attr><attr name=\"DocSet\" value=\"JScript\"><\/attr><attr name=\"DocSet\" value=\"Visual Studio\"><\/attr><attr name=\"Product\" value=\"VS\"><\/attr><attr name=\"ProductVers\" value=\"kbVS700\"><\/attr><attr name=\"Technology\" value=\"ManagedCode\"><\/attr><attr name=\"TechnologyVers\" value=\"kbManagedCode\"><\/attr><attr name=\"TopicType\" value=\"kbArticle\"><\/attr><attr name=\"TargetOS\" value=\"Windows\"><\/attr><attr name=\"Locale\" value=\"kbChineseSimp\"><\/attr><\/xml><meta name=\"rtfFileName\" content=\"js7reregexp.rtf\">\n<meta name=\"save\" content=\"history\">\n<meta name=\"msdnID\" content=\"_731809\">\n<div id=\"nsbanner\"> <div id=\"bannerrow1\"> <table class=\"bannerparthead\" cellspacing=\"0\"><tr id=\"hdr\">\n<td class=\"runninghead\" nowrap>JScript .NET<\/td> <td class=\"product\" nowrap>&nbsp;<\/td> <\/tr><\/table>\n<\/div> <div id=\"TitleRow\"> <h1 class=\"dtH1\">\n<a name=\"jsreconanchors\"><\/a>\u5b9a\u4f4d\u70b9<\/h1> <\/div>\n<\/div>  <div id=\"nstext\" valign=\"bottom\"> <p>\u672c\u8282\u524d\u9762\u7684\u4e3b\u9898\u4e2d\u7684\u793a\u4f8b\u53ea\u6d89\u53ca\u7ae0\u8282\u6807\u9898\u67e5\u627e\u3002\u5b57\u7b26\u4e32 Chapter \u540e\u9762\u8ddf\u7a7a\u683c\u548c\u6570\u5b57\u7684\u4efb\u4f55\u5339\u914d\u9879\u53ef\u80fd\u662f\u5b9e\u9645\u7ae0\u8282\u6807\u9898\uff0c\u6216\u8005\u4e5f\u53ef\u80fd\u662f\u6307\u5411\u53e6\u4e00\u7ae0\u7684\u4ea4\u53c9\u5f15\u7528\u3002\u7531\u4e8e\u771f\u6b63\u7684\u7ae0\u8282\u6807\u9898\u603b\u662f\u51fa\u73b0\u5728\u884c\u7684\u5f00\u59cb\uff0c\u6240\u4ee5\u8bbe\u8ba1\u4e00\u79cd\u65b9\u6cd5\u53ea\u67e5\u627e\u6807\u9898\u800c\u4e0d\u67e5\u627e\u4ea4\u53c9\u5f15\u7528\u53ef\u80fd\u5f88\u6709\u7528\u3002<\/p> <p>\u5b9a\u4f4d\u70b9\u63d0\u4f9b\u8be5\u80fd\u529b\u3002\u5b9a\u4f4d\u70b9\u4f7f\u60a8\u80fd\u591f\u5c06\u6b63\u5219\u8868\u8fbe\u5f0f\u56fa\u5b9a\u5230\u884c\u9996\u6216\u884c\u5c3e\u3002\u5b83\u4eec\u8fd8\u4f7f\u60a8\u80fd\u591f\u521b\u5efa\u8fd9\u6837\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\uff0c\u8fd9\u4e9b\u6b63\u5219\u8868\u8fbe\u5f0f\u51fa\u73b0\u5728\u4e00\u4e2a\u5355\u8bcd\u5185\u3001\u5728\u4e00\u4e2a\u5355\u8bcd\u7684\u5f00\u5934\u6216\u8005\u4e00\u4e2a\u5355\u8bcd\u7684\u7ed3\u5c3e\u3002\u4e0b\u8868\u5305\u542b\u6b63\u5219\u8868\u8fbe\u5f0f\u5b9a\u4f4d\u70b9\u4ee5\u53ca\u5b83\u4eec\u7684\u542b\u4e49\u7684\u5217\u8868\uff1a<\/p> <div class=\"tablediv\"><table cellspacing=\"0\" class=\"dtTABLE\">\n<tr valign=\"top\">\n<th width=\"17%\">\u5b57\u7b26<\/th> <th width=\"83%\">\u8bf4\u660e<\/th> <\/tr>\n<tr valign=\"top\">\n<td width=\"17%\">^<\/td> <td width=\"83%\">\u5339\u914d\u8f93\u5165\u5b57\u7b26\u4e32\u5f00\u59cb\u7684\u4f4d\u7f6e\u3002\u5982\u679c\u8bbe\u7f6e\u4e86 <b>RegExp<\/b> \u5bf9\u8c61\u7684 <b>Multiline<\/b> \u5c5e\u6027\uff0c^ \u8fd8\u4f1a\u4e0e \\n \u6216 \\r \u4e4b\u540e\u7684\u4f4d\u7f6e\u5339\u914d\u3002<\/td> <\/tr>\n<tr valign=\"top\">\n<td width=\"17%\">$<\/td> <td width=\"83%\">\u5339\u914d\u8f93\u5165\u5b57\u7b26\u4e32\u7ed3\u5c3e\u7684\u4f4d\u7f6e\u3002\u5982\u679c\u8bbe\u7f6e\u4e86 <b>RegExp<\/b> \u5bf9\u8c61\u7684 <b>Multiline<\/b> \u5c5e\u6027\uff0c$ \u8fd8\u4f1a\u4e0e \\n \u6216 \\r \u4e4b\u524d\u7684\u4f4d\u7f6e\u5339\u914d\u3002<\/td> <\/tr>\n<tr valign=\"top\">\n<td width=\"17%\">\\b<\/td> <td width=\"83%\">\u5339\u914d\u4e00\u4e2a\u5b57\u8fb9\u754c\uff0c\u5373\u5b57\u4e0e\u7a7a\u683c\u95f4\u7684\u4f4d\u7f6e\u3002 <\/td> <\/tr>\n<tr valign=\"top\">\n<td width=\"17%\">\\B<\/td> <td width=\"83%\">\u975e\u5b57\u8fb9\u754c\u5339\u914d\u3002<\/td> <\/tr>\n<\/table><\/div> <p>\u4e0d\u80fd\u5c06\u9650\u5b9a\u7b26\u4e0e\u5b9a\u4f4d\u70b9\u4e00\u8d77\u4f7f\u7528\u3002\u7531\u4e8e\u5728\u7d27\u9760\u6362\u884c\u6216\u8005\u5b57\u8fb9\u754c\u7684\u524d\u9762\u6216\u540e\u9762\u4e0d\u80fd\u6709\u4e00\u4e2a\u4ee5\u4e0a\u4f4d\u7f6e\uff0c\u56e0\u6b64\u4e0d\u5141\u8bb8\u8bf8\u5982 ^* \u4e4b\u7c7b\u7684\u8868\u8fbe\u5f0f\u3002<\/p> <p>\u82e5\u8981\u5339\u914d\u4e00\u884c\u6587\u672c\u5f00\u59cb\u5904\u7684\u6587\u672c\uff0c\u8bf7\u5728\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u5f00\u59cb\u4f7f\u7528 ^ \u5b57\u7b26\u3002\u4e0d\u8981\u5c06 ^ \u7684\u8fd9\u79cd\u7528\u6cd5\u4e0e\u4e2d\u62ec\u53f7\u8868\u8fbe\u5f0f\u5185\u7684\u7528\u6cd5\u6df7\u6dc6\u3002<\/p> <p>\u82e5\u8981\u5339\u914d\u4e00\u884c\u6587\u672c\u7684\u7ed3\u675f\u5904\u7684\u6587\u672c\uff0c\u8bf7\u5728\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u7ed3\u675f\u5904\u4f7f\u7528 $ \u5b57\u7b26\u3002<\/p> <p>\u82e5\u8981\u5728\u641c\u7d22\u7ae0\u8282\u6807\u9898\u65f6\u4f7f\u7528\u5b9a\u4f4d\u70b9\uff0c\u4e0b\u9762\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u5339\u914d\u4e00\u4e2a\u7ae0\u8282\u6807\u9898\uff0c\u8be5\u6807\u9898\u53ea\u5305\u542b\u4e24\u4e2a\u5c3e\u968f\u6570\u5b57\uff0c\u5e76\u4e14\u51fa\u73b0\u5728\u884c\u9996\uff1a<\/p> <pre class=\"code\">\/^Chapter [1-9][0-9]{0,1}\/<\/pre> <p>\u771f\u6b63\u7684\u7ae0\u8282\u6807\u9898\u4e0d\u4ec5\u51fa\u73b0\u884c\u7684\u5f00\u59cb\u5904\uff0c\u800c\u4e14\u5b83\u8fd8\u662f\u8be5\u884c\u4e2d\u4ec5\u6709\u7684\u6587\u672c\u3002\u5b83\u5373\u51fa\u73b0\u5728\u884c\u9996\u53c8\u51fa\u73b0\u5728\u540c\u4e00\u884c\u7684\u7ed3\u5c3e\u3002\u4e0b\u9762\u7684\u8868\u8fbe\u5f0f\u80fd\u786e\u4fdd\u6307\u5b9a\u7684\u5339\u914d\u53ea\u5339\u914d\u7ae0\u8282\u800c\u4e0d\u5339\u914d\u4ea4\u53c9\u5f15\u7528\u3002\u901a\u8fc7\u521b\u5efa\u53ea\u5339\u914d\u4e00\u884c\u6587\u672c\u7684\u5f00\u59cb\u548c\u7ed3\u5c3e\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\uff0c\u5c31\u53ef\u505a\u5230\u8fd9\u4e00\u70b9\u3002<\/p> <pre class=\"code\">\/^Chapter [1-9][0-9]{0,1}$\/<\/pre> <p>\u5339\u914d\u5b57\u8fb9\u754c\u7a0d\u6709\u4e0d\u540c\uff0c\u4f46\u5411\u6b63\u5219\u8868\u8fbe\u5f0f\u6dfb\u52a0\u4e86\u5f88\u91cd\u8981\u7684\u80fd\u529b\u3002\u5b57\u8fb9\u754c\u662f\u5355\u8bcd\u548c\u7a7a\u683c\u4e4b\u95f4\u7684\u4f4d\u7f6e\u3002\u975e\u5b57\u8fb9\u754c\u662f\u4efb\u4f55\u5176\u4ed6\u4f4d\u7f6e\u3002\u4e0b\u9762\u7684\u8868\u8fbe\u5f0f\u5339\u914d\u5355\u8bcd <i>Chapter<\/i> \u7684\u5f00\u5934\u4e09\u4e2a\u5b57\u7b26\uff0c\u56e0\u4e3a\u8fd9\u4e09\u4e2a\u5b57\u7b26\u51fa\u73b0\u5b57\u8fb9\u754c\u540e\u9762\uff1a<\/p> <pre class=\"code\">\/\\bCha\/<\/pre> <p>\\b \u5b57\u7b26\u7684\u4f4d\u7f6e\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u5982\u679c\u5b83\u4f4d\u4e8e\u8981\u5339\u914d\u7684\u5b57\u7b26\u4e32\u7684\u5f00\u59cb\uff0c\u5b83\u5728\u5355\u8bcd\u7684\u5f00\u59cb\u5904\u67e5\u627e\u5339\u914d\u9879\u3002\u5982\u679c\u5b83\u4f4d\u4e8e\u5b57\u7b26\u4e32\u7684\u7ed3\u5c3e\uff0c\u5b83\u5728\u5355\u8bcd\u7684\u7ed3\u5c3e\u5904\u67e5\u627e\u5339\u914d\u9879\u3002\u4f8b\u5982\uff0c\u4e0b\u9762\u7684\u8868\u8fbe\u5f0f\u5339\u914d\u5355\u8bcd Chapter \u4e2d\u7684\u5b57\u7b26\u4e32 <i>ter<\/i>\uff0c\u56e0\u4e3a\u5b83\u51fa\u73b0\u5728\u5b57\u8fb9\u754c\u7684\u524d\u9762\uff1a<\/p> <pre class=\"code\">\/ter\\b\/<\/pre> <p>\u4e0b\u9762\u7684\u8868\u8fbe\u5f0f\u5339\u914d Chapter \u4e2d\u7684\u5b57\u7b26\u4e32 <i>apt<\/i>\uff0c\u4f46\u4e0d\u5339\u914d aptitude \u4e2d\u7684\u5b57\u7b26\u4e32 <i>apt<\/i>\uff1a<\/p> <pre class=\"code\">\/\\Bapt\/<\/pre> <p>\u5b57\u7b26\u4e32 <i>apt<\/i> \u51fa\u73b0\u5728\u5355\u8bcd <i>Chapter<\/i> \u4e2d\u7684\u975e\u5b57\u8fb9\u754c\u5904\uff0c\u4f46\u51fa\u73b0\u5728\u5355\u8bcd <i>aptitude<\/i> \u4e2d\u7684\u5b57\u8fb9\u754c\u5904\u3002\u5bf9\u4e8e \\B \u975e\u5b57\u8fb9\u754c\u8fd0\u7b97\u7b26\uff0c\u4f4d\u7f6e\u5e76\u4e0d\u91cd\u8981\uff0c\u56e0\u4e3a\u5339\u914d\u4e0d\u5173\u5fc3\u7a76\u7adf\u662f\u5355\u8bcd\u7684\u5f00\u5934\u8fd8\u662f\u7ed3\u5c3e\u3002<\/p> <h4 class=\"dtH4\">\u8bf7\u53c2\u89c1<\/h4> <p><a>\u6b63\u5219\u8868\u8fbe\u5f0f\u4ecb\u7ecd<\/a><\/p>  <div class=\"footer\">  <hr>\n<p><a>\u5c06\u6587\u6863\u53cd\u9988\u53d1\u9001\u7ed9 Microsoft<\/a><\/p>\n <p><link keywords=\"vxmscCopyright\" tabindex=\"0\"><\/p>\n<\/div>  <\/div>    <\/textarea><br><input onclick=\"runEx('runcode59537')\" type=\"button\" value=\"\u8fd0\u884c\u4ee3\u7801\" class=\"fn-butt\"><input onclick=\"copy2('runcode59537')\" type=\"button\" value=\"\u590d\u5236\u4ee3\u7801\" class=\"fn-butt\"><input onclick=\"doSave(runcode59537)\" type=\"button\" value=\"\u4fdd\u5b58\u4ee3\u7801\" class=\"fn-butt\">[Ctrl+A \u5168\u9009 \u6ce8:<a title=\"\u67e5\u770b\u5177\u4f53\u8be6\u60c5\">\u5f15\u5165\u5916\u90e8Js\u9700\u518d\u5237\u65b0\u4e00\u4e0b\u9875\u9762\u624d\u80fd\u6267\u884c<\/a>]<\/div>\n<br><b>\u66ff\u6362\u548c\u5206\u7ec4 <br>\u8bf4\u660e\u66ff\u6362\u5982\u4f55\u4f7f\u7528\u201c|\u201d\u5b57\u7b26\uff0c\u4ee5\u5728\u4e24\u4e2a\u6216\u66f4\u591a\u66ff\u6362\u9009\u9879\u4e4b\u95f4\u9009\u62e9\uff0c\u5e76\u8bf4\u660e\u5206\u7ec4\u5982\u4f55\u4e0e\u66ff\u6362\u534f\u540c\u4f5c\u7528\u4ee5\u8fdb\u4e00\u6b65\u7cbe\u70bc\u7ed3\u679c\u3002<\/b><br>\u66ff\u6362\u4f7f\u7528 | \u5b57\u7b26\u6765\u5141\u8bb8\u5728\u4e24\u4e2a\u6216\u591a\u4e2a\u66ff\u6362\u9009\u9879\u4e4b\u95f4\u8fdb\u884c\u9009\u62e9\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u6269\u5c55\u7ae0\u8282\u6807\u9898\u6b63\u5219\u8868\u8fbe\u5f0f\uff0c\u4ee5\u8fd4\u56de\u6bd4\u7ae0\u6807\u9898\u8303\u56f4\u66f4\u5e7f\u7684\u5339\u914d\u9879\u3002\u4f46\u662f\uff0c\u8fd9\u5e76\u4e0d\u8c61\u60a8\u53ef\u80fd\u8ba4\u4e3a\u7684\u90a3\u6837\u7b80\u5355\u3002\u66ff\u6362\u5339\u914d | \u5b57\u7b26\u4e24\u8fb9\u7684\u5c3d\u53ef\u80fd\u6700\u5927\u7684\u8868\u8fbe\u5f0f\u3002\u60a8\u53ef\u80fd\u8ba4\u4e3a\uff0c\u4e0b\u9762\u7684\u8868\u8fbe\u5f0f\u5339\u914d\u51fa\u73b0\u5728\u884c\u9996\u548c\u884c\u5c3e\u3001\u540e\u9762\u8ddf\u4e00\u4e2a\u6216\u4e24\u4e2a\u6570\u5b57\u7684 Chapter \u6216 Section\uff1a<br><br>\/^Chapter|Section [1-9][0-9]{0,1}$\/<br>\u5f88\u9057\u61be\uff0c\u4e0a\u9762\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u8981\u4e48\u5339\u914d\u884c\u9996\u7684\u5355\u8bcd Chapter\uff0c\u8981\u4e48\u5339\u914d\u884c\u5c3e\u7684\u5355\u8bcd Section \u53ca\u8ddf\u5728\u5176\u540e\u7684\u4efb\u4f55\u6570\u5b57\u3002\u5982\u679c\u8f93\u5165\u5b57\u7b26\u4e32\u662f Chapter 22\uff0c\u90a3\u4e48\u4e0a\u9762\u7684\u8868\u8fbe\u5f0f\u53ea\u5339\u914d\u5355\u8bcd Chapter\u3002\u5982\u679c\u8f93\u5165\u5b57\u7b26\u4e32\u662f Section 22\uff0c\u90a3\u4e48\u8be5\u8868\u8fbe\u5f0f\u5339\u914d Section 22\u3002<br><br>\u82e5\u8981\u4f7f\u6b63\u5219\u8868\u8fbe\u5f0f\u66f4\u6613\u4e8e\u63a7\u5236\uff0c\u53ef\u4ee5\u4f7f\u7528\u62ec\u53f7\u6765\u9650\u5236\u66ff\u6362\u7684\u8303\u56f4\uff0c\u5373\uff0c\u786e\u4fdd\u5b83\u53ea\u5e94\u7528\u4e8e\u4e24\u4e2a\u5355\u8bcd Chapter \u548c Section\u3002\u4f46\u662f\uff0c\u62ec\u53f7\u4e5f\u7528\u4e8e\u521b\u5efa\u5b50\u8868\u8fbe\u5f0f\uff0c\u5e76\u53ef\u80fd\u6355\u83b7\u5b83\u4eec\u4ee5\u4f9b\u4ee5\u540e\u4f7f\u7528\uff0c\u8fd9\u4e00\u70b9\u5728\u6709\u5173\u53cd\u5411\u5f15\u7528\u7684\u90a3\u4e00\u8282\u8bb2\u8ff0\u3002\u901a\u8fc7\u5728\u4e0a\u9762\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u9002\u5f53\u4f4d\u7f6e\u6dfb\u52a0\u62ec\u53f7\uff0c\u5c31\u53ef\u4ee5\u4f7f\u8be5\u6b63\u5219\u8868\u8fbe\u5f0f\u5339\u914d Chapter 1 \u6216 Section 3\u3002<br><br>\u4e0b\u9762\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u4f7f\u7528\u62ec\u53f7\u6765\u7ec4\u5408 Chapter \u548c Section\uff0c\u4ee5\u4fbf\u8868\u8fbe\u5f0f\u6b63\u786e\u5730\u8d77\u4f5c\u7528\uff1a<br><br>\/^(Chapter|Section) [1-9][0-9]{0,1}$\/<br>\u5c3d\u7ba1\u8fd9\u4e9b\u8868\u8fbe\u5f0f\u6b63\u786e\u5730\u8d77\u4f5c\u7528\uff0c\u4f46 Chapter|Section \u4e24\u4fa7\u7684\u62ec\u53f7\u4e5f\u5f15\u8d77\u4e24\u4e2a\u5339\u914d\u5355\u8bcd\u4e4b\u4e00\u88ab\u6355\u83b7\u4ee5\u4f9b\u672a\u6765\u4f7f\u7528\u3002\u7531\u4e8e\u5728\u4e0a\u9762\u7684\u8868\u8fbe\u5f0f\u4e2d\u53ea\u6709\u4e00\u7ec4\u62ec\u53f7\uff0c\u56e0\u6b64\uff0c\u53ea\u6709\u4e00\u4e2a\u88ab\u6355\u83b7\u7684\u201c\u5b50\u5339\u914d\u9879\u201d\u3002\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528 RegExp \u5bf9\u8c61\u7684 $1-$9 \u5c5e\u6027\u6765\u5f15\u7528\u6b64\u5b50\u5339\u914d\u9879\u3002<br><br>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u60a8\u53ea\u9700\u8981\u4f7f\u7528\u62ec\u53f7\u6765\u7ec4\u5408\u5355\u8bcd Chapter \u548c Section \u4e4b\u95f4\u7684\u9009\u62e9\u3002\u82e5\u8981\u9632\u6b62\u5339\u914d\u88ab\u4fdd\u5b58\u4ee5\u5907\u5c06\u6765\u4f7f\u7528\uff0c\u8bf7\u5728\u62ec\u53f7\u5185\u6b63\u5219\u8868\u8fbe\u5f0f\u6a21\u5f0f\u4e4b\u524d\u653e\u7f6e ?:\u3002\u4e0b\u9762\u7684\u4fee\u6539\u63d0\u4f9b\u76f8\u540c\u7684\u80fd\u529b\u800c\u4e0d\u4fdd\u5b58\u5b50\u5339\u914d\u9879\uff1a<br><br>\/^(?:Chapter|Section) [1-9][0-9]{0,1}$\/<br>\u9664 ?: \u5143\u5b57\u7b26\u5916\uff0c\u4e24\u4e2a\u5176\u4ed6\u975e\u6355\u83b7\u5143\u5b57\u7b26\u521b\u5efa\u88ab\u79f0\u4e3a\u201c\u9884\u6d4b\u5148\u884c\u201d\u5339\u914d\u7684\u67d0\u4e9b\u5185\u5bb9\u3002\u6b63\u5411\u9884\u6d4b\u5148\u884c\u4f7f\u7528 ?= \u6307\u5b9a\uff0c\u5b83\u5339\u914d\u5904\u4e8e\u62ec\u53f7\u4e2d\u5339\u914d\u6b63\u5219\u8868\u8fbe\u5f0f\u6a21\u5f0f\u7684\u8d77\u59cb\u70b9\u7684\u641c\u7d22\u5b57\u7b26\u4e32\u3002\u53cd\u5411\u9884\u6d4b\u5148\u884c\u4f7f\u7528 ?! \u6307\u5b9a\uff0c\u5b83\u5339\u914d\u5904\u4e8e\u4e0e\u6b63\u5219\u8868\u8fbe\u5f0f\u6a21\u5f0f\u4e0d\u5339\u914d\u7684\u5b57\u7b26\u4e32\u7684\u8d77\u59cb\u70b9\u7684\u641c\u7d22\u5b57\u7b26\u4e32\u3002<br><br>\u4f8b\u5982\uff0c\u5047\u8bbe\u60a8\u6709\u4e00\u4e2a\u6587\u6863\uff0c\u8be5\u6587\u6863\u5305\u542b\u6307\u5411 Windows 3.1\u3001Windows 95\u3001Windows 98 \u548c Windows NT \u7684\u5f15\u7528\u3002\u518d\u8fdb\u4e00\u6b65\u5047\u8bbe\uff0c\u60a8\u9700\u8981\u66f4\u65b0\u8be5\u6587\u6863\uff0c\u5c06\u6307\u5411 Windows 95\u3001Windows 98 \u548c Windows NT \u7684\u6240\u6709\u5f15\u7528\u66f4\u6539\u4e3a Windows 2000\u3002\u4e0b\u9762\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\uff08\u8fd9\u662f\u4e00\u4e2a\u6b63\u5411\u9884\u6d4b\u5148\u884c\u7684\u793a\u4f8b\uff09\u5339\u914d Windows 95\u3001Windows 98 \u548c Windows NT\uff1a<br><br>\/Windows(?=95 |98 |NT )\/<br>\u627e\u5230\u4e00\u5904\u5339\u914d\u540e\uff0c\u7d27\u63a5\u7740\u5c31\u5728\u5339\u914d\u7684\u6587\u672c\uff08\u4e0d\u5305\u62ec\u9884\u6d4b\u5148\u884c\u4e2d\u7684\u5b57\u7b26\uff09\u4e4b\u540e\u641c\u7d22\u4e0b\u4e00\u5904\u5339\u914d\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4e0a\u9762\u7684\u8868\u8fbe\u5f0f\u5339\u914d Windows 98\uff0c\u5c06\u5728 Windows \u4e4b\u540e\u800c\u4e0d\u662f\u5728 98 \u4e4b\u540e\u7ee7\u7eed\u641c\u7d22\u3002<br><b>\u53cd\u5411\u5f15\u7528 <br>\u8bf4\u660e\u5982\u4f55\u521b\u5efa\u53ef\u4ee5\u8bbf\u95ee\u5b58\u50a8\u5339\u914d\u6a21\u5f0f\u7684\u7ec4\u6210\u90e8\u5206\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\uff0c\u800c\u4e0d\u5fc5\u91cd\u65b0\u521b\u5efa\u6784\u6210\u8fd9\u4e00\u5339\u914d\u6a21\u5f0f\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u3002<\/b><br><br><br>\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u6700\u91cd\u8981\u529f\u80fd\u4e4b\u4e00\u662f\u5b58\u50a8\u5339\u914d\u7684\u6a21\u5f0f\u7684\u4e00\u90e8\u5206\u4ee5\u4f9b\u4ee5\u540e\u91cd\u65b0\u4f7f\u7528\u7684\u80fd\u529b\u3002\u60a8\u53ef\u80fd\u60f3\u8d77\uff0c\u82e5\u5728\u6b63\u5219\u8868\u8fbe\u5f0f\u6a21\u5f0f\u6216\u6a21\u5f0f\u7684\u4e00\u90e8\u5206\u4e24\u4fa7\u52a0\u4e0a\u62ec\u53f7\uff0c\u5c31\u4f1a\u5bfc\u81f4\u8868\u8fbe\u5f0f\u7684\u4e00\u90e8\u5206\u88ab\u5b58\u50a8\u5230\u4e34\u65f6\u7f13\u51b2\u533a\u4e2d\u3002\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u975e\u6355\u83b7\u5143\u5b57\u7b26 ?:\u3001?= \u6216 ?! \u6765\u91cd\u5199\u6355\u83b7\u3002<br><br>\u6bcf\u4e2a\u6355\u83b7\u7684\u5b50\u5339\u914d\u9879\u6309\u7167\u5b83\u4eec\u5728\u6b63\u5219\u8868\u8fbe\u5f0f\u6a21\u5f0f\u4e2d\u4ece\u5de6\u5230\u53f3\u51fa\u73b0\u7684\u987a\u5e8f\u5b58\u50a8\u3002\u7f13\u51b2\u533a\u7f16\u53f7\u4ece 1 \u5f00\u59cb\uff0c\u6700\u591a\u53ef\u5b58\u50a8 99 \u4e2a\u6355\u83b7\u7684\u5b50\u8868\u8fbe\u5f0f\u3002\u53ef\u4ee5\u4f7f\u7528 \\n \u6765\u8bbf\u95ee\u6bcf\u4e2a\u7f13\u51b2\u533a\uff0c\u5176\u4e2d n \u662f\u6807\u8bc6\u7279\u5b9a\u7f13\u51b2\u533a\u7684\u4e00\u4f4d\u6216\u4e24\u4f4d\u5341\u8fdb\u5236\u6570\u5b57\u3002<br><br>\u53cd\u5411\u5f15\u7528\u7684\u6700\u7b80\u5355\u7684\u3001\u6700\u6709\u7528\u7684\u5e94\u7528\u4e4b\u4e00\uff0c\u662f\u63d0\u4f9b\u67e5\u627e\u6587\u672c\u4e2d\u4e24\u4e2a\u76f8\u540c\u7684\u76f8\u90bb\u5355\u8bcd\u7684\u5339\u914d\u9879\u7684\u80fd\u529b\u3002\u4ee5\u4e0b\u9762\u7684\u53e5\u5b50\u4e3a\u4f8b\uff1a<br><br>Is is the cost of of gasoline going up up?<br>\u4e0a\u9762\u7684\u53e5\u5b50\u5f88\u663e\u7136\u6709\u591a\u4e2a\u91cd\u590d\u7684\u5355\u8bcd\u3002\u5982\u679c\u80fd\u8bbe\u8ba1\u4e00\u79cd\u65b9\u6cd5\u5b9a\u4f4d\u8be5\u53e5\u5b50\uff0c\u800c\u4e0d\u5fc5\u67e5\u627e\u6bcf\u4e2a\u5355\u8bcd\u7684\u91cd\u590d\u51fa\u73b0\uff0c\u90a3\u8be5\u6709\u591a\u597d\u3002\u4e0b\u9762\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u4f7f\u7528\u5355\u4e2a\u5b50\u8868\u8fbe\u5f0f\u6765\u5b9e\u73b0\u8fd9\u4e00\u70b9\uff1a<br><br>\/\\b([a-z]+) \\1\\b\/gi<br>\u6355\u83b7\u7684\u8868\u8fbe\u5f0f\uff0c\u6b63\u5982 [a-z]+ \u6307\u5b9a\u7684\uff0c\u5305\u62ec\u4e00\u4e2a\u6216\u591a\u4e2a\u5b57\u6bcd\u3002\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u7b2c\u4e8c\u90e8\u5206\u662f\u5bf9\u4ee5\u524d\u6355\u83b7\u7684\u5b50\u5339\u914d\u9879\u7684\u5f15\u7528\uff0c\u5373\uff0c\u5355\u8bcd\u7684\u7b2c\u4e8c\u4e2a\u5339\u914d\u9879\u6b63\u597d\u7531\u62ec\u53f7\u8868\u8fbe\u5f0f\u5339\u914d\u3002\\1 \u6307\u5b9a\u7b2c\u4e00\u4e2a\u5b50\u5339\u914d\u9879\u3002\u5b57\u8fb9\u754c\u5143\u5b57\u7b26\u786e\u4fdd\u53ea\u68c0\u6d4b\u6574\u4e2a\u5355\u8bcd\u3002\u5426\u5219\uff0c\u8bf8\u5982\u201cis issued\u201d\u6216\u201cthis is\u201d\u4e4b\u7c7b\u7684\u8bcd\u7ec4\u5c06\u4e0d\u80fd\u6b63\u786e\u5730\u88ab\u6b64\u8868\u8fbe\u5f0f\u8bc6\u522b\u3002<br><br>\u6b63\u5219\u8868\u8fbe\u5f0f\u540e\u9762\u7684\u5168\u5c40\u6807\u8bb0 (g) \u6307\u793a\uff0c\u5c06\u8be5\u8868\u8fbe\u5f0f\u5e94\u7528\u5230\u8f93\u5165\u5b57\u7b26\u4e32\u4e2d\u80fd\u591f\u67e5\u627e\u5230\u7684\u5c3d\u53ef\u80fd\u591a\u7684\u5339\u914d\u3002\u8868\u8fbe\u5f0f\u7684\u7ed3\u5c3e\u5904\u7684\u4e0d\u533a\u5206\u5927\u5c0f\u5199 (i) \u6807\u8bb0\u6307\u5b9a\u4e0d\u533a\u5206\u5927\u5c0f\u5199\u3002\u591a\u884c\u6807\u8bb0\u6307\u5b9a\u6362\u884c\u7b26\u7684\u4e24\u8fb9\u53ef\u80fd\u51fa\u73b0\u6f5c\u5728\u7684\u5339\u914d\u3002<br><br>\u4f7f\u7528\u4e0a\u9762\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\uff0c\u4e0b\u9762\u7684\u4ee3\u7801\u53ef\u4ee5\u4f7f\u7528\u5b50\u5339\u914d\u9879\u4fe1\u606f\uff0c\u5c06\u6587\u672c\u5b57\u7b26\u4e32\u4e2d\u7684\u4e24\u4e2a\u8fde\u7eed\u76f8\u540c\u7684\u5355\u8bcd\u7684\u5339\u914d\u9879\u66ff\u6362\u4e3a\u540c\u4e00\u5355\u8bcd\u7684\u5355\u4e2a\u5339\u914d\u9879\uff1a<br><br>var ss = \"Is is the cost of of gasoline going up up?.\\n\";<br>var re = \/\\b([a-z]+) \\1\\b\/gim;\u00a0 \u00a0\u00a0 \u00a0 \/\/Create regular expression pattern.<br>var rv = ss.replace(re,\"$1\");\u00a0 \u00a0\/\/Replace two occurrences with one.<br>\u5728 replace \u65b9\u6cd5\u5185\u4f7f\u7528 $1 \u5f15\u7528\u7b2c\u4e00\u4e2a\u4fdd\u5b58\u7684\u5b50\u5339\u914d\u9879\u3002\u5982\u679c\u60a8\u6709\u591a\u4e2a\u5b50\u5339\u914d\u9879\uff0c\u60a8\u5c06\u901a\u8fc7\u4f7f\u7528 $2\u3001$3 \u7b49\u4f9d\u6b21\u5f15\u7528\u5b83\u4eec\u3002<br><br>\u53cd\u5411\u5f15\u7528\u8fd8\u53ef\u4ee5\u5c06\u901a\u7528\u8d44\u6e90\u6307\u793a\u7b26 (URI) \u5206\u89e3\u4e3a\u5176\u7ec4\u4ef6\u3002\u5047\u5b9a\u60a8\u60f3\u5c06\u4e0b\u9762\u7684 URI \u5206\u89e3\u4e3a\u534f\u8bae\uff08ftp\u3001http \u7b49\u7b49\uff09\u3001\u57df\u5730\u5740\u548c\u9875\/\u8def\u5f84\uff1a<br><br><a>http:\/\/msdn.microsoft.com:80\/scripting\/default.htm<\/a><br>\u4e0b\u9762\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u63d0\u4f9b\u8be5\u529f\u80fd\uff1a<br><br>\/(\\w+):\\\/\\\/([^\/:]+)(:\\d*)?([^# ]*)\/<br>\u7b2c\u4e00\u4e2a\u62ec\u53f7\u5b50\u8868\u8fbe\u5f0f\u6355\u83b7 Web \u5730\u5740\u7684\u534f\u8bae\u90e8\u5206\u3002\u8be5\u5b50\u8868\u8fbe\u5f0f\u5339\u914d\u5728\u5192\u53f7\u548c\u4e24\u4e2a\u6b63\u659c\u6760\u524d\u9762\u7684\u4efb\u4f55\u5355\u8bcd\u3002\u7b2c\u4e8c\u4e2a\u62ec\u53f7\u5b50\u8868\u8fbe\u5f0f\u6355\u83b7\u5730\u5740\u7684\u57df\u5730\u5740\u90e8\u5206\u3002\u8be5\u5b50\u8868\u8fbe\u5f0f\u5339\u914d\u4e0d\u5305\u62ec ^\u3001\/ \u6216 : \u5b57\u7b26\u7684\u4efb\u4f55\u5b57\u7b26\u5e8f\u5217\u3002\u7b2c\u4e09\u4e2a\u62ec\u53f7\u5b50\u8868\u8fbe\u5f0f\u6355\u83b7\u7aef\u53e3\u53f7\uff08\u5982\u679c\u6307\u5b9a\u4e86\u7684\u8bdd\uff09\u3002\u8be5\u5b50\u8868\u8fbe\u5f0f\u5339\u914d\u5192\u53f7\u540e\u9762\u7684\u96f6\u4e2a\u6216\u591a\u4e2a\u6570\u5b57\u3002\u6700\u540e\uff0c\u7b2c\u56db\u4e2a\u62ec\u53f7\u5b50\u8868\u8fbe\u5f0f\u6355\u83b7 Web \u5730\u5740\u6307\u5b9a\u7684\u8def\u5f84\u548c\/\u6216\u9875\u4fe1\u606f\u3002\u8be5\u5b50\u8868\u8fbe\u5f0f\u5339\u914d # \u6216\u7a7a\u683c\u5b57\u7b26\u4e4b\u5916\u7684\u4e00\u4e2a\u6216\u591a\u4e2a\u5b57\u7b26\u3002<br><br>\u5c06\u6b63\u5219\u8868\u8fbe\u5f0f\u5e94\u7528\u5230\u4e0a\u9762\u7684 URI\uff0c\u5404\u5b50\u5339\u914d\u9879\u5305\u542b\u4e0b\u9762\u7684\u5185\u5bb9\uff1a <br><br>RegExp.$1 \u5305\u542b\u201chttp\u201d <br>RegExp.$2 \u5305\u542b\u201cmsdn.microsoft.com\u201d <br>RegExp.$3 \u5305\u542b\u201c:80\u201d <br>RegExp.$4 \u5305\u542b\u201c\/scripting\/default.htm\u201d <br><br><font color=\"red\">\u6b63\u5219\u5165\u95e8\u3000\u5230\u6b64\u7ed3\u901f\u3000\u540e\u7eed\u4e3a<\/font> <font color=\"blue\">\u00a0\u00a0\u6df1\u5165\u6b63\u5219\u8868\u8fbe\u5f0f\u7f16\u7a0b <\/font><br>\u51fa\u7248\u65e5\u671f\u3000\u8fd8\u672a\u786e\u5b9a\uff0e\uff0e\uff0e\uff0e\uff0e\uff0e\uff0e\uff0e\r\n                            <div class=\"pagenum tc\">\n<a>\u4e0a\u4e00\u9875<\/a><a>1<\/a><a>2<\/a><a>3<\/a><strong>4<\/strong><a>\u9605\u8bfb\u5168\u6587<\/a>\n<\/div>"}															</div>
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