{"id":102,"title":"\u6b63\u5219\u8868\u8fbe\u5f0f\u5339\u914d\u89c4\u5219","good":0,"bad":0,"hit":1694,"created_at":"2014-10-10 10:49:37","content":"<p>\u6b63\u5219\u8868\u8fbe\u5f0f\u5339\u914d\u89c4\u5219\r\n &nbsp; &nbsp; &nbsp;<\/p><p><a name=\"7.1_\u57fa\u672c\u6a21\u5f0f\u5339\u914d\"><\/a>7.1 \u57fa\u672c\u6a21\u5f0f\u5339\u914d<br\/>\r\n &nbsp;<br\/>\r\n &nbsp;\u3000\u3000 \u4e00\u5207\u4ece\u6700\u57fa\u672c\u7684\u5f00\u59cb\u3002\u6a21\u5f0f\uff0c\u662f\u6b63\u89c4\u8868\u8fbe\u5f0f\u6700\u57fa\u672c\u7684\u5143\u7d20\uff0c\u5b83\u4eec\u662f\u4e00\u7ec4\u63cf\u8ff0\u5b57\u7b26\u4e32\u7279\u5f81\u7684\u5b57\u7b26\u3002\u6a21\u5f0f\u53ef\u4ee5\u5f88\u7b80\u5355\uff0c\u7531\u666e\u901a\u7684\u5b57\u7b26\u4e32\u7ec4\u6210\uff0c\u4e5f\u53ef\u4ee5\u975e\u5e38\u590d\u6742\uff0c\u5f80\u5f80\u7528\u7279\u6b8a\u7684\u5b57\u7b26\u8868\u793a\u4e00\u4e2a\u8303\u56f4\u5185\u7684\u5b57\u7b26\u3001\u91cd\u590d\u51fa\u73b0\uff0c\u6216\u8868\u793a\u4e0a\u4e0b\u6587\u3002\u4f8b\u5982\uff1a<\/p><p>^once<\/p><p>\u3000\u3000\u8fd9\u4e2a\u6a21\u5f0f\u5305\u542b\u4e00\u4e2a\u7279\u6b8a\u7684\u5b57\u7b26^\uff0c\u8868\u793a\u8be5\u6a21\u5f0f\u53ea\u5339\u914d\u90a3\u4e9b\u4ee5once\u5f00\u5934\u7684\u5b57\u7b26\u4e32\u3002\u4f8b\u5982\u8be5\u6a21\u5f0f\u4e0e\u5b57\u7b26\u4e32&quot;once upon a \r\ntime&quot;\u5339\u914d\uff0c\u4e0e&quot;There once was a man from \r\nNewYork&quot;\u4e0d\u5339\u914d\u3002\u6b63\u5982\u5982^\u7b26\u53f7\u8868\u793a\u5f00\u5934\u4e00\u6837\uff0c$\u7b26\u53f7\u7528\u6765\u5339\u914d\u90a3\u4e9b\u4ee5\u7ed9\u5b9a\u6a21\u5f0f\u7ed3\u5c3e\u7684\u5b57\u7b26\u4e32\u3002<\/p><p>bucket$<\/p><p>\u3000\u3000\u8fd9\u4e2a\u6a21\u5f0f\u4e0e&quot;Who kept all of this cash in a bucket&quot;\u5339\u914d\uff0c\u4e0e&quot;buckets&quot;\u4e0d\u5339\u914d\u3002\u5b57\u7b26^\u548c$\u540c\u65f6\u4f7f\u7528\u65f6\uff0c\u8868\u793a\u7cbe\u786e\u5339\u914d\uff08\u5b57\u7b26\u4e32\u4e0e\u6a21\u5f0f\u4e00\u6837\uff09\u3002\u4f8b\u5982\uff1a<\/p><p>^bucket$<\/p><p>\u3000\u3000\u53ea\u5339\u914d\u5b57\u7b26\u4e32&quot;bucket&quot;\u3002\u5982\u679c\u4e00\u4e2a\u6a21\u5f0f\u4e0d\u5305\u62ec^\u548c$\uff0c\u90a3\u4e48\u5b83\u4e0e\u4efb\u4f55\u5305\u542b\u8be5\u6a21\u5f0f\u7684\u5b57\u7b26\u4e32\u5339\u914d\u3002\u4f8b\u5982\uff1a\u6a21\u5f0f<\/p><p>once<\/p><p>\u4e0e\u5b57\u7b26\u4e32<\/p><p>There once was a man from NewYork<br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Who kept all of his cash in a bucket.<\/p><p>\u662f\u5339\u914d\u7684\u3002<br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;\u3000\u3000 \r\n\u5728\u8be5\u6a21\u5f0f\u4e2d\u7684\u5b57\u6bcd(o-n-c-e)\u662f\u5b57\u9762\u7684\u5b57\u7b26\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u4ed6\u4eec\u8868\u793a\u8be5\u5b57\u6bcd\u672c\u8eab\uff0c\u6570\u5b57\u4e5f\u662f\u4e00\u6837\u7684\u3002\u5176\u4ed6\u4e00\u4e9b\u7a0d\u5fae\u590d\u6742\u7684\u5b57\u7b26\uff0c\u5982\u6807\u70b9\u7b26\u53f7\u548c\u767d\u5b57\u7b26\uff08\u7a7a\u683c\u3001\r\n\u5236\u8868\u7b26\u7b49\uff09\uff0c\u8981\u7528\u5230\u8f6c\u4e49\u5e8f\u5217\u3002\u6240\u6709\u7684\u8f6c\u4e49\u5e8f\u5217\u90fd\u7528\u53cd\u659c\u6760(\\)\u6253\u5934\u3002\u5236\u8868\u7b26\u7684\u8f6c\u4e49\u5e8f\u5217\u662f\uff1a\\t\u3002\u6240\u4ee5\u5982\u679c\u6211\u4eec\u8981\u68c0\u6d4b\u4e00\u4e2a\u5b57\u7b26\u4e32\u662f\u5426\u4ee5\u5236\u8868\u7b26\u5f00\u5934\uff0c\u53ef\u4ee5\u7528\u8fd9\r\n\u4e2a\u6a21\u5f0f\uff1a<\/p><p>^\\t<\/p><p>\u7c7b\u4f3c\u7684\uff0c\u7528\\n\u8868\u793a\u201c\u65b0\u884c\u201d\uff0c\\r\u8868\u793a\u56de\u8f66\u3002\u5176\u4ed6\u7684\u7279\u6b8a\u7b26\u53f7\uff0c\u53ef\u4ee5\u7528\u5728\u524d\u9762\u52a0\u4e0a\u53cd\u659c\u6760\uff0c\u5982\u53cd\u659c\u6760\u672c\u8eab\u7528\\\\\u8868\u793a\uff0c\u53e5\u53f7.\u7528\\.\u8868\u793a\uff0c\u4ee5\u6b64\u7c7b\u63a8\u3002<br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<a name=\"7.2_\u5b57\u7b26\u7c07\"><\/a>7.2 \u5b57\u7b26\u7c07<br\/>\r\n &nbsp;<br\/>\r\n &nbsp;\u5728INTERNET\u7684\u7a0b\u5e8f\u4e2d\uff0c\u6b63\u89c4\u8868\u8fbe\u5f0f\u901a\u5e38\u7528\u6765\u9a8c\u8bc1\u7528\u6237\u7684\u8f93\u5165\u3002\u5f53\u7528\u6237\u63d0\u4ea4\u4e00\u4e2aFORM\u4ee5\u540e\uff0c\u8981\u5224\u65ad\u8f93\u5165\u7684\u7535\u8bdd\u53f7\u7801\u3001\u5730\u5740\u3001EMAIL\u5730\u5740\u3001\u4fe1\u7528\u5361\u53f7\u7801\u7b49\u662f\u5426\u6709\u6548\uff0c\u7528\u666e\u901a\u7684\u57fa\u4e8e\u5b57\u9762\u7684\u5b57\u7b26\u662f\u4e0d\u591f\u7684\u3002<br\/>\r\n &nbsp;<br\/>\r\n &nbsp;\u6240\u4ee5\u8981\u7528\u4e00\u79cd\u66f4\u81ea\u7531\u7684\u63cf\u8ff0\u6211\u4eec\u8981\u7684\u6a21\u5f0f\u7684\u529e\u6cd5\uff0c\u5b83\u5c31\u662f\u5b57\u7b26\u7c07\u3002\u8981\u5efa\u7acb\u4e00\u4e2a\u8868\u793a\u6240\u6709\u5143\u97f3\u5b57\u7b26\u7684\u5b57\u7b26\u7c07\uff0c\u5c31\u628a\u6240\u6709\u7684\u5143\u97f3\u5b57\u7b26\u653e\u5728\u4e00\u4e2a\u65b9\u62ec\u53f7\u91cc\uff1a<\/p><p>[AaEeIiOoUu]<\/p><p>\u8fd9\u4e2a\u6a21\u5f0f\u4e0e\u4efb\u4f55\u5143\u97f3\u5b57\u7b26\u5339\u914d\uff0c\u4f46\u53ea\u80fd\u8868\u793a\u4e00\u4e2a\u5b57\u7b26\u3002\u7528\u8fde\u5b57\u53f7\u53ef\u4ee5\u8868\u793a\u4e00\u4e2a\u5b57\u7b26\u7684\u8303\u56f4\uff0c\u5982\uff1a<\/p><p>[a-z] \/\/\u5339\u914d\u6240\u6709\u7684\u5c0f\u5199\u5b57\u6bcd <br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;[A-Z] \/\/\u5339\u914d\u6240\u6709\u7684\u5927\u5199\u5b57\u6bcd <br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;[a-zA-Z] \/\/\u5339\u914d\u6240\u6709\u7684\u5b57\u6bcd <br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;[0-9] \/\/\u5339\u914d\u6240\u6709\u7684\u6570\u5b57 <br\/>\r\n &nbsp; &nbsp;[0-9\\.\\-] \/\/\u5339\u914d\u6240\u6709\u7684\u6570\u5b57\uff0c\u53e5\u53f7\u548c\u51cf\u53f7 <br\/>\r\n &nbsp; &nbsp;[ \\f\\r\\t\\n] \/\/\u5339\u914d\u6240\u6709\u7684\u767d\u5b57\u7b26<\/p><p>\u540c\u6837\u7684\uff0c\u8fd9\u4e9b\u4e5f\u53ea\u8868\u793a\u4e00\u4e2a\u5b57\u7b26\uff0c\u8fd9\u662f\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u3002\u5982\u679c\u8981\u5339\u914d\u4e00\u4e2a\u7531\u4e00\u4e2a\u5c0f\u5199\u5b57\u6bcd\u548c\u4e00\u4f4d\u6570\u5b57\u7ec4\u6210\u7684\u5b57\u7b26\u4e32\uff0c\u6bd4\u5982&quot;z2&quot;\u3001&quot;t6&quot;\u6216&quot;g7&quot;\uff0c\u4f46\u4e0d\u662f&quot;ab2&quot;\u3001&quot;r2d3&quot; \u6216&quot;b52&quot;\u7684\u8bdd\uff0c\u7528\u8fd9\u4e2a\u6a21\u5f0f\uff1a<\/p><p>^[a-z][0-9]$<\/p><p>\u5c3d\u7ba1[a-z]\u4ee3\u886826\u4e2a\u5b57\u6bcd\u7684\u8303\u56f4\uff0c\u4f46\u5728\u8fd9\u91cc\u5b83\u53ea\u80fd\u4e0e\u7b2c\u4e00\u4e2a\u5b57\u7b26\u662f\u5c0f\u5199\u5b57\u6bcd\u7684\u5b57\u7b26\u4e32\u5339\u914d\u3002<br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;\u524d\u9762\u66fe\u7ecf\u63d0\u5230^\u8868\u793a\u5b57\u7b26\u4e32\u7684\u5f00\u5934\uff0c\u4f46\u5b83\u8fd8\u6709\u53e6\u5916\u4e00\u4e2a\u542b\u4e49\u3002\u5f53\u5728\u4e00\u7ec4\u65b9\u62ec\u53f7\u91cc\u4f7f\u7528^\u662f\uff0c\u5b83\u8868\u793a\u201c\u975e\u201d\u6216\u201c\u6392\u9664\u201d\u7684\u610f\u601d\uff0c\u5e38\u5e38\u7528\u6765\u5254\u9664\u67d0\u4e2a\u5b57\u7b26\u3002\u8fd8\u7528\u524d\u9762\u7684\u4f8b\u5b50\uff0c\u6211\u4eec\u8981\u6c42\u7b2c\u4e00\u4e2a\u5b57\u7b26\u4e0d\u80fd\u662f\u6570\u5b57\uff1a<\/p><p>^[^0-9][0-9]$<\/p><p>\u8fd9\u4e2a\u6a21\u5f0f\u4e0e&quot;&amp;5&quot;\u3001&quot;g7&quot;\u53ca&quot;-2&quot;\u662f\u5339\u914d\u7684\uff0c\u4f46\u4e0e&quot;12&quot;\u3001&quot;66&quot;\u662f\u4e0d\u5339\u914d\u7684\u3002\u4e0b\u9762\u662f\u51e0\u4e2a\u6392\u9664\u7279\u5b9a\u5b57\u7b26\u7684\u4f8b\u5b50\uff1a<\/p><p>[^a-z] \/\/\u9664\u4e86\u5c0f\u5199\u5b57\u6bcd\u4ee5\u5916\u7684\u6240\u6709\u5b57\u7b26 <br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;[^\\\\\\\/\\^] \/\/\u9664\u4e86(\\)(\/)(^)\u4e4b\u5916\u7684\u6240\u6709\u5b57\u7b26 <br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;[^\\&quot;\\&#39;] \/\/\u9664\u4e86\u53cc\u5f15\u53f7(&quot;)\u548c\u5355\u5f15\u53f7(&#39;)\u4e4b\u5916\u7684\u6240\u6709\u5b57\u7b26<\/p><p>\u7279\u6b8a\u5b57\u7b26&quot;.&quot; (\u70b9\uff0c\u53e5\u53f7)\u5728\u6b63\u89c4\u8868\u8fbe\u5f0f\u4e2d\u7528\u6765\u8868\u793a\u9664\u4e86\u201c\u65b0\u884c\u201d\u4e4b\u5916\u7684\u6240\u6709\u5b57\u7b26\u3002\u6240\u4ee5\u6a21\u5f0f&quot;^.5$&quot;\u4e0e\u4efb\u4f55\u4e24\u4e2a\u5b57\u7b26\u7684\u3001\u4ee5\u6570\u5b575\u7ed3\u5c3e\u548c\u4ee5\u5176\u4ed6\u975e\u201c\u65b0\u884c\u201d\u5b57\u7b26\u5f00\u5934\u7684\u5b57\u7b26\u4e32\u5339\u914d\u3002\u6a21\u5f0f&quot;.&quot;\u53ef\u4ee5\u5339\u914d\u4efb\u4f55\u5b57\u7b26\u4e32\uff0c\u9664\u4e86\u7a7a\u4e32\u548c\u53ea\u5305\u62ec\u4e00\u4e2a\u201c\u65b0\u884c\u201d\u7684\u5b57\u7b26\u4e32\u3002<br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;PHP\u7684\u6b63\u89c4\u8868\u8fbe\u5f0f\u6709\u4e00\u4e9b\u5185\u7f6e\u7684\u901a\u7528\u5b57\u7b26\u7c07\uff0c\u5217\u8868\u5982\u4e0b\uff1a<\/p><p>\u5b57\u7b26\u7c07 \u542b\u4e49 <br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;[[:alpha:]] \u4efb\u4f55\u5b57\u6bcd <br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;[[:digit:]] \u4efb\u4f55\u6570\u5b57 <br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;[[:alnum:]] \u4efb\u4f55\u5b57\u6bcd\u548c\u6570\u5b57 <br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;[[:space:]] \u4efb\u4f55\u767d\u5b57\u7b26 <br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;[[:upper:]] \u4efb\u4f55\u5927\u5199\u5b57\u6bcd <br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;[[:lower:]] \u4efb\u4f55\u5c0f\u5199\u5b57\u6bcd <br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;[[:punct:]] \u4efb\u4f55\u6807\u70b9\u7b26\u53f7 <br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;[[:xdigit:]] \u4efb\u4f5516\u8fdb\u5236\u7684\u6570\u5b57\uff0c\u76f8\u5f53\u4e8e[0-9a-fA-F]<\/p><p><a name=\"7.3_\u786e\u5b9a\u91cd\u590d\u51fa\u73b0\"><\/a>7.3 \u786e\u5b9a\u91cd\u590d\u51fa\u73b0<br\/>\r\n &nbsp;<br\/>\r\n &nbsp;\u5230\u73b0\u5728\u4e3a\u6b62\uff0c\u4f60\u5df2\u7ecf\u77e5\u9053\u5982\u4f55\u53bb\u5339\u914d\u4e00\u4e2a\u5b57\u6bcd\u6216\u6570\u5b57\uff0c\u4f46\u66f4\u591a\u7684\u60c5\u51b5\u4e0b\uff0c\u53ef\u80fd\u8981\u5339\u914d\u4e00\u4e2a\u5355\u8bcd\u6216\u4e00\u7ec4\u6570\u5b57\u3002\u4e00\u4e2a\u5355\u8bcd\u6709\u82e5\u5e72\u4e2a\u5b57\u6bcd\u7ec4\u6210\uff0c\u4e00\u7ec4\u6570\u5b57\u6709\u82e5\u5e72\u4e2a\u5355\u6570\u7ec4\u6210\u3002\u8ddf\u5728\u5b57\u7b26\u6216\u5b57\u7b26\u7c07\u540e\u9762\u7684\u82b1\u62ec\u53f7({})\u7528\u6765\u786e\u5b9a\u524d\u9762\u7684\u5185\u5bb9\u7684\u91cd\u590d\u51fa\u73b0\u7684\u6b21\u6570\u3002<\/p><p>\u5b57\u7b26\u7c07 \u542b\u4e49 <br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;^[a-zA-Z_]$ \u6240\u6709\u7684\u5b57\u6bcd\u548c\u4e0b\u5212\u7ebf <br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;^[[:alpha:]]{3}$ \u6240\u6709\u76843\u4e2a\u5b57\u6bcd\u7684\u5355\u8bcd <br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;^a$ \u5b57\u6bcda <br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;^a{4}$ aaaa <br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;^a{2,4}$ aa,aaa\u6216aaaa <br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;^a{1,3}$ a,aa\u6216aaa <br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;^a{2,}$ \u5305\u542b\u591a\u4e8e\u4e24\u4e2aa\u7684\u5b57\u7b26\u4e32 <br\/>\r\n &nbsp; &nbsp;^a{2,} \u5982\uff1aaardvark\u548caaab\uff0c\u4f46apple\u4e0d\u884c <br\/>\r\n &nbsp; &nbsp;a{2,} \u5982\uff1abaad\u548caaa\uff0c\u4f46Nantucket\u4e0d\u884c <br\/>\r\n &nbsp; &nbsp;\\t{2} \u4e24\u4e2a\u5236\u8868\u7b26 <br\/>\r\n &nbsp; &nbsp;.{2} \u6240\u6709\u7684\u4e24\u4e2a\u5b57\u7b26<\/p><p>\u8fd9\u4e9b\u4f8b\u5b50\u63cf\u8ff0\u4e86\u82b1\u62ec\u53f7\u7684\u4e09\u79cd\u4e0d\u540c\u7684\u7528\u6cd5\u3002\u4e00\u4e2a\u6570\u5b57\uff0c{x}\u7684\u610f\u601d\u662f\u201c\u524d\u9762\u7684\u5b57\u7b26\u6216\u5b57\u7b26\u7c07\u53ea\u51fa\u73b0x\u6b21\u201d\uff1b\u4e00\u4e2a\u6570\u5b57\u52a0\u9017\u53f7\uff0c{x,}\u7684\u610f\u601d\r\n\u662f\u201c\u524d\u9762\u7684\u5185\u5bb9\u51fa\u73b0x\u6216\u66f4\u591a\u7684\u6b21\u6570\u201d\uff1b\u4e24\u4e2a\u7528\u9017\u53f7\u5206\u9694\u7684\u6570\u5b57\uff0c{x,y}\u8868\u793a\u201c\u524d\u9762\u7684\u5185\u5bb9\u81f3\u5c11\u51fa\u73b0x\u6b21\uff0c\u4f46\u4e0d\u8d85\u8fc7y\u6b21\u201d\u3002\u6211\u4eec\u53ef\u4ee5\u628a\u6a21\u5f0f\u6269\u5c55\u5230\u66f4\u591a\u7684\u5355\u8bcd\r\n\u6216\u6570\u5b57\uff1a<\/p><p>^[a-zA-Z0-9_]{1,}$ \/\/\u6240\u6709\u5305\u542b\u4e00\u4e2a\u4ee5\u4e0a\u7684\u5b57\u6bcd\u3001\u6570\u5b57\u6216\u4e0b\u5212\u7ebf\u7684\u5b57\u7b26\u4e32 <br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;^[0-9]{1,}$ \/\/\u6240\u6709\u7684\u6b63\u6570 <br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;^\\-{0,1}[0-9]{1,}$ \/\/\u6240\u6709\u7684\u6574\u6570 <br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;^\\-{0,1}[0-9]{0,}\\.{0,1}[0-9]{0,}$ \/\/\u6240\u6709\u7684\u5c0f\u6570<\/p><p>\u6700\u540e\u4e00\u4e2a\u4f8b\u5b50\u4e0d\u592a\u597d\u7406\u89e3\uff0c\u662f\u5417\uff1f\u8fd9\u4e48\u770b\u5427\uff1a\u4e0e\u6240\u6709\u4ee5\u4e00\u4e2a\u53ef\u9009\u7684\u8d1f\u53f7(\\-{0,1})\u5f00\u5934(^)\u3001\u8ddf\u77400\u4e2a\u6216\u66f4\u591a\u7684\u6570\u5b57([0-9]\r\n{0,})\u3001\u548c\u4e00\u4e2a\u53ef\u9009\u7684\u5c0f\u6570\u70b9(\\.{0,1})\u518d\u8ddf\u4e0a0\u4e2a\u6216\u591a\u4e2a\u6570\u5b57([0-9]{0,})\uff0c\u5e76\u4e14\u6ca1\u6709\u5176\u4ed6\u4efb\u4f55\u4e1c\u897f($)\u3002\u4e0b\u9762\u4f60\u5c06\u77e5\u9053\u80fd\u591f\u4f7f\u7528\u7684\u66f4\r\n\u4e3a\u7b80\u5355\u7684\u65b9\u6cd5\u3002<br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;\u7279\u6b8a\u5b57\u7b26&quot;?&quot;\u4e0e{0,1}\u662f\u76f8\u7b49\u7684\uff0c\u5b83\u4eec\u90fd\u4ee3\u8868\u7740\uff1a\u201c0\u4e2a\u62161\u4e2a\u524d\u9762\u7684\u5185\u5bb9\u201d\u6216\u201c\u524d\u9762\u7684\u5185\u5bb9\u662f\u53ef\u9009\u7684\u201d\u3002\u6240\u4ee5\u521a\u624d\u7684\u4f8b\u5b50\u53ef\u4ee5\u7b80\u5316\u4e3a\uff1a<\/p><p>^\\-?[0-9]{0,}\\.?[0-9]{0,}$<\/p><p>\u7279\u6b8a\u5b57\u7b26&quot;*&quot;\u4e0e{0,}\u662f\u76f8\u7b49\u7684\uff0c\u5b83\u4eec\u90fd\u4ee3\u8868\u7740\u201c0\u4e2a\u6216\u591a\u4e2a\u524d\u9762\u7684\u5185\u5bb9\u201d\u3002\u6700\u540e\uff0c\u5b57\u7b26&quot;+&quot;\u4e0e {1,}\u662f\u76f8\u7b49\u7684\uff0c\u8868\u793a\u201c1\u4e2a\u6216\u591a\u4e2a\u524d\u9762\u7684\u5185\u5bb9\u201d\uff0c\u6240\u4ee5\u4e0a\u9762\u76844\u4e2a\u4f8b\u5b50\u53ef\u4ee5\u5199\u6210\uff1a<\/p><p>^[a-zA-Z0-9_]+$ \/\/\u6240\u6709\u5305\u542b\u4e00\u4e2a\u4ee5\u4e0a\u7684\u5b57\u6bcd\u3001\u6570\u5b57\u6216\u4e0b\u5212\u7ebf\u7684\u5b57\u7b26\u4e32 <br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;^[0-9]+$ \/\/\u6240\u6709\u7684\u6b63\u6570 <br\/>\r\n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;^\\-?[0-9]+$ \/\/\u6240\u6709\u7684\u6574\u6570 <br\/>\r\n &nbsp; &nbsp;^\\-?[0-9]*\\.?[0-9]*$ \/\/\u6240\u6709\u7684\u5c0f\u6570<\/p><p>\u5f53\u7136\u8fd9\u5e76\u4e0d\u80fd\u4ece\u6280\u672f\u4e0a\u964d\u4f4e\u6b63\u89c4\u8868\u8fbe\u5f0f\u7684\u590d\u6742\u6027\uff0c\u4f46\u53ef\u4ee5\u4f7f\u5b83\u4eec\u66f4\u5bb9\u6613\u9605\u8bfb\u3002<\/p><p><br\/><\/p>"}