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Javascript 正则表达式是否匹配非ASCII字符?_Javascript_Jquery_Regex - Fatal编程技术网

Javascript 正则表达式是否匹配非ASCII字符?

Javascript 正则表达式是否匹配非ASCII字符?,javascript,jquery,regex,Javascript,Jquery,Regex,在正则表达式中匹配非ASCII字符的最简单方法是什么?我希望在一个输入字符串中单独匹配所有单词,但语言可能不是英语,因此我需要匹配如u、ö、ß和ñ之类的内容。此外,这是在Javascript/jQuery中,因此任何解决方案都需要应用于此 所有启用Unicode的正则表达式样式都应该有一个特殊的字符类,如\w,它匹配任何Unicode字母。看一看。您使用与任何其他字符匹配相同的方法,但使用\uxxx,其中XXXX是字符的unicode编号 看看: 这应该可以做到: [^\x00-\x7F]+

在正则表达式中匹配非ASCII字符的最简单方法是什么?我希望在一个输入字符串中单独匹配所有单词,但语言可能不是英语,因此我需要匹配如u、ö、ß和ñ之类的内容。此外,这是在Javascript/jQuery中,因此任何解决方案都需要应用于此

所有启用Unicode的正则表达式样式都应该有一个特殊的字符类,如\w,它匹配任何Unicode字母。看一看。

您使用与任何其他字符匹配相同的方法,但使用\uxxx,其中XXXX是字符的unicode编号

看看:

这应该可以做到:

[^\x00-\x7F]+
它匹配未包含在(0-127,即0x0到0x7F)中的任何字符

您可以使用Unicode执行相同的操作:

[^\u0000-\u007F]+
对于unicode,您可以查看以下两个参考资料:

  • Unicode范围列表
  • 创建按Unicode块过滤的正则表达式

    • 正则表达式、Unicode和Javascript的情况很糟糕。程序员必须依赖外部库才能认识到“Αλφα”是一个单词,甚至“é”是一个字母,这是荒谬的

      但事情就是这样

      这家伙写了一个很好的库来处理Javascript正则表达式中的Unicode:

      Unicode是这个正则表达式库的插件:

      以下是关于Unicode扩展的帖子:

      以及扩展页本身:

      这项工作做得很好,但Javascript在这方面太落后了,这仍然让我很沮丧

      (他为奥莱利写了一本关于这个话题的书,所以他很可能知道自己在说什么。)

      他实现它的方式是添加具有某些属性的字符表。然后,当您用他的库构造一个正则表达式时,
      \p{charclass}
      被替换为
      [类中的所有字符]

      var words_in_text = function (text) {
          var regex = /([\u0041-\u005A\u0061-\u007A\u00AA\u00B5\u00BA\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0370-\u0374\u0376\u0377\u037A-\u037D\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u048A-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05D0-\u05EA\u05F0-\u05F2\u0620-\u064A\u066E\u066F\u0671-\u06D3\u06D5\u06E5\u06E6\u06EE\u06EF\u06FA-\u06FC\u06FF\u0710\u0712-\u072F\u074D-\u07A5\u07B1\u07CA-\u07EA\u07F4\u07F5\u07FA\u0800-\u0815\u081A\u0824\u0828\u0840-\u0858\u08A0\u08A2-\u08AC\u0904-\u0939\u093D\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097F\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BD\u09CE\u09DC\u09DD\u09DF-\u09E1\u09F0\u09F1\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A59-\u0A5C\u0A5E\u0A72-\u0A74\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABD\u0AD0\u0AE0\u0AE1\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3D\u0B5C\u0B5D\u0B5F-\u0B61\u0B71\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BD0\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C33\u0C35-\u0C39\u0C3D\u0C58\u0C59\u0C60\u0C61\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBD\u0CDE\u0CE0\u0CE1\u0CF1\u0CF2\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D\u0D4E\u0D60\u0D61\u0D7A-\u0D7F\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0E01-\u0E30\u0E32\u0E33\u0E40-\u0E46\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB0\u0EB2\u0EB3\u0EBD\u0EC0-\u0EC4\u0EC6\u0EDC-\u0EDF\u0F00\u0F40-\u0F47\u0F49-\u0F6C\u0F88-\u0F8C\u1000-\u102A\u103F\u1050-\u1055\u105A-\u105D\u1061\u1065\u1066\u106E-\u1070\u1075-\u1081\u108E\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u1380-\u138F\u13A0-\u13F4\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u1700-\u170C\u170E-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176C\u176E-\u1770\u1780-\u17B3\u17D7\u17DC\u1820-\u1877\u1880-\u18A8\u18AA\u18B0-\u18F5\u1900-\u191C\u1950-\u196D\u1970-\u1974\u1980-\u19AB\u19C1-\u19C7\u1A00-\u1A16\u1A20-\u1A54\u1AA7\u1B05-\u1B33\u1B45-\u1B4B\u1B83-\u1BA0\u1BAE\u1BAF\u1BBA-\u1BE5\u1C00-\u1C23\u1C4D-\u1C4F\u1C5A-\u1C7D\u1CE9-\u1CEC\u1CEE-\u1CF1\u1CF5\u1CF6\u1D00-\u1DBF\u1E00-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u2071\u207F\u2090-\u209C\u2102\u2107\u210A-\u2113\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u212F-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2183\u2184\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CEE\u2CF2\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D80-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2E2F\u3005\u3006\u3031-\u3035\u303B\u303C\u3041-\u3096\u309D-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FCC\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA61F\uA62A\uA62B\uA640-\uA66E\uA67F-\uA697\uA6A0-\uA6E5\uA717-\uA71F\uA722-\uA788\uA78B-\uA78E\uA790-\uA793\uA7A0-\uA7AA\uA7F8-\uA801\uA803-\uA805\uA807-\uA80A\uA80C-\uA822\uA840-\uA873\uA882-\uA8B3\uA8F2-\uA8F7\uA8FB\uA90A-\uA925\uA930-\uA946\uA960-\uA97C\uA984-\uA9B2\uA9CF\uAA00-\uAA28\uAA40-\uAA42\uAA44-\uAA4B\uAA60-\uAA76\uAA7A\uAA80-\uAAAF\uAAB1\uAAB5\uAAB6\uAAB9-\uAABD\uAAC0\uAAC2\uAADB-\uAADD\uAAE0-\uAAEA\uAAF2-\uAAF4\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uABC0-\uABE2\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D\uFB1F-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE70-\uFE74\uFE76-\uFEFC\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]+)/g;
          return text.match(regex);
      };
      
      words_in_text('Düsseldorf, Köln, Москва, 北京市, إسرائيل !@#$');
      
      // returns array ["Düsseldorf", "Köln", "Москва", "北京市", "إسرائيل"]
      

      这个正则表达式将匹配任何语言文本中的所有单词…

      Jeremy Ruten给出的答案很好,但我认为这并不完全是Paul Wicks想要的。如果我理解正确的话,Paul会询问表达式是否匹配非英语单词,如
      können
      móc
      。Jeremy的正则表达式只匹配非英语字母,因此需要稍加改进:

      ([^\x00-\x7F]|\w)+
      

      [^\x00-\x7F]
      和此
      [^\u0000-\u007F]
      部件允许正则表达式匹配非英语字母

      (|)
      是逻辑或,
      \w
      是英文字母,因此
      ([^\u0000-\u007F]|\w)
      将匹配单个英文或非英文字母

      表达式末尾的
      +
      表示可以重复,因此整个表达式允许所有英语或非英语字母匹配

      您可以使用各种字符串测试第一个表达式,第二个表达式。

      是ES2018的功能之一

      基本用法 使用Unicode属性转义,可以使用以下简单正则表达式匹配任何语言的字母:

      /\p{Letter}/u
      
      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     
      或者使用更简洁的速记:

      /\p{L}/u
      
      匹配词 关于这个问题的具体用例(匹配单词),请注意,您可以在字符类中使用Unicode属性转义,这样就可以轻松地将字母与其他单词字符(如连字符)匹配起来:

      /[\p{L}-]/u
      
      将其拼接在一起,您可以将所有[1]语言的单词与这个漂亮的短正则表达式匹配:

      /[\p{L}-]+/ug
      
      示例(不知羞耻地从中插入):

      [1]请注意,我不是语言专家。除了字母和连字符外,你可能还想自己研究其他可能是单词组成部分的字符

      浏览器支持 此功能可用

      运输 如果需要支持较旧的浏览器,可以使用名为的工具将Unicode属性转义传输到ES5。有一个在线演示可用。正如您在演示中所看到的,事实上,今天您可以将非拉丁字母与以下(非常长的)ES5正则表达式进行匹配:

      /\p{Letter}/u
      
      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     

      如果您使用的是Babel,那么还有一个由regexpu提供支持的插件(,)。

      我在\p按预期工作时遇到问题,所以我使用了不同的策略,如:

      ([^\t]+)\t
      

      查找在下一个制表符之前不是制表符的任何内容。。。显然,这取决于你的搜索来源,但你得到的想法。现在我不必弄清楚什么是unicode字符有效,什么是无效等等。

      这对于大多数风格的正则表达式都是正确的,但对于JavaScript则不正确,至少根据当时的坏运气,我猜是这样。至少您可以使用olle发布的Unicode图表来查找您的字符;)我认为\w依赖于客户端上的区域性设置。我不知道,但在.NET中,您始终可以指定所需的区域性。除此之外,什么是字母,什么不是在Unicode标准中定义的,并且不依赖于文化。这并没有回答关于将单词与非英语字符匹配的问题…没有“ASCII码大于128的字符”这样的事情!!!最后我将
      [\u00BF-\u1ff\u2C00-\uD7FF\w]
      定义为一个字母。@jackocnr首先有一个小的修正:
      [\u00C0-\u1ff\u2C00-\uD7FF\w]
      (没有倒排问号
      ),关于范围,请参阅
      00C0
      À
      中的,
      1FFF
      是希腊语扩展的最后一个字符,
      2C00
      是希腊语扩展的第一个字母,
      D7FF
      是韩文Jamo扩展-B中的最后一个字符。所以除了:前两个块上的符号和特殊字符外,其他都是;中间块中的符号;终端块中的代理、专用区域和特殊字符。此答案不正确。ASCII不包括。如果是,那么ASCII将由129个字符组成,而不是128个字符。要匹配所有字母还是所有字符?例如,是否要包含标点符号、数字、空格以及任意符号和符号?如果说你想匹配所有的单词,那就意味着