blocks|key|3904973|text|\x**部分转换成一个特殊的字符，如果你替换那些你基本上得到的：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3904974|/%5E[a-zäöü]*[A-ZÄÖÜ]([A-ZÄÖÜß]%2B%7C[a-zäöüß]{3,})/|code-block|syntax|javascript|3904975|我帮你把它拆开：|3904976|%5E字符串的开头|3904977|[a-zäöü]字符集:从a到z或äöü*零次或多次的任何字符|3904978|[A-ZÄÖÜ]字符集:任何从A到Z的字符或?字符只有一次|3904979|组的(开始|3904980|[A-ZÄÖÜß]另一个字符集，你现在应该得到它:)+%2B一次或多次|3904981|%7C或|3904982|[a-zäöüß]字符集，{3,}+3次或更多次|3904983|组的)结尾|3904984|此外，您还遗漏了结尾的)/，开头和结尾的/表示介于两者之间的是正则表达式。|3904985|entityMap^0|0|4|0|0|0|0|1|0|0|8|K|1|0|0|8|0|2|1|0|0|9|R|1|0|0|1|0|0|9|D|4|0|2|1|0|B|2|K|1|0^^$0|@$1|2|3|4|5|6|7|16|8|@$9|17|A|18|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|19|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|1A|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|1B|8|@$9|1C|A|1D|B|C]]|D|@]|E|$]]|$1|O|3|P|5|6|7|1E|8|@$9|1F|A|1G|B|C]|$9|1H|A|1I|B|C]]|D|@]|E|$]]|$1|Q|3|R|5|6|7|1J|8|@$9|1K|A|1L|B|C]]|D|@]|E|$]]|$1|S|3|T|5|6|7|1M|8|@$9|1N|A|1O|B|C]]|D|@]|E|$]]|$1|U|3|V|5|6|7|1P|8|@$9|1Q|A|1R|B|C]|$9|1S|A|1T|B|C]]|D|@]|E|$]]|$1|W|3|X|5|6|7|1U|8|@$9|1V|A|1W|B|C]]|D|@]|E|$]]|$1|Y|3|Z|5|6|7|1X|8|@$9|1Y|A|1Z|B|C]|$9|20|A|21|B|C]]|D|@]|E|$]]|$1|10|3|11|5|6|7|22|8|@$9|23|A|24|B|C]]|D|@]|E|$]]|$1|12|3|13|5|6|7|25|8|@$9|26|A|27|B|C]|$9|28|A|29|B|C]]|D|@]|E|$]]|$1|14|3|-4|5|6|7|2A|8|@]|D|@]|E|$]]]|15|$]]

the <code>\x**</code> parts translate to a special charachter, if you replace those you basically get:

<pre><code>/^[a-zäöü]*[A-ZÄÖÜ]([A-ZÄÖÜß]+|[a-zäöüß]{3,})/
</code></pre>

I'll take it apart for you:

<code>^</code> beginning of string

<code>[a-zäöü]</code> characterset: any character from a to z or äöü <code>*</code> zero or more times

<code>[A-ZÄÖÜ]</code> characterset: any character from A to Z or ÄÖÜ just once

<code>(</code> start of group

<code>[A-ZÄÖÜß]</code> another character set, you should get it now :) <code>+</code> one or more times

<code>|</code> or

<code>[a-zäöüß]</code> characterset, <code>{3,}</code> 3 or more times

<code>)</code> end of group

also, you missed a <code>)/</code> at the end, the <code>/</code> at the start and end means whats in between is the regex.

blocks|key|2187899|text|我建议你看看Expresso，考虑到你错过了结束的括号，结果是：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2187900|​|2187901|📷|atomic|2187902|2187903|entityMap|0|LINK|mutability|MUTABLE|url|http://www.ultrapico.com/Expresso.htm|1|IMAGE|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/8847d80e9e8987dc3f5dfc7b89658019.png|imageAlt^0|6|8|0|0|0|0|1|1|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@$A|Y|B|Z|1|10]]|C|$]]|$1|D|3|E|5|6|7|11|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|12|8|@]|9|@$A|13|B|14|1|15]]|C|$]]|$1|I|3|E|5|6|7|16|8|@]|9|@]|C|$]]|$1|J|3|-4|5|6|7|17|8|@]|9|@]|C|$]]]|K|$L|$5|M|N|O|C|$P|Q]]|R|$5|S|N|T|C|$U|V|W|-4]]]]

I´d suggest you take a look at <a href="http://www.ultrapico.com/Expresso.htm" rel="nofollow noreferrer">Expresso</a>, given you missed the closing parenthesis, this is the result:

<img src="https://i.stack.imgur.com/ihSjs.png" alt="enter image description here">

blocks|key|2270219|text|%5E行首|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2270220|[...]一类可能的字符|2270221|a-z范围(abcde...yz)|2270222|字符的\xE4十六进制值("ascii“代码)。|2270223|N到m次之间的{n,m}。|2270224|等同于{0，}的*|2270225|等同于{1，}的%2B|2270226|entityMap^0|0|1|0|0|5|0|0|3|0|3|4|0|7|5|0|8|1|0|8|1|0^^$0|@$1|2|3|4|5|6|7|T|8|@$9|U|A|V|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|Z|8|@$9|10|A|11|B|C]]|D|@]|E|$]]|$1|J|3|K|5|6|7|12|8|@$9|13|A|14|B|C]]|D|@]|E|$]]|$1|L|3|M|5|6|7|15|8|@$9|16|A|17|B|C]]|D|@]|E|$]]|$1|N|3|O|5|6|7|18|8|@$9|19|A|1A|B|C]]|D|@]|E|$]]|$1|P|3|Q|5|6|7|1B|8|@$9|1C|A|1D|B|C]]|D|@]|E|$]]|$1|R|3|-4|5|6|7|1E|8|@]|D|@]|E|$]]]|S|$]]

<code>^</code> begining of a line

<code>[...]</code> a class of possible chars

<code>a-z</code> range (abcde...yz)

<code>\xE4</code> hexadecimal value of a char ("ascii" code).

<code>{n,m}</code> between n and m occurrences.

<code>*</code> equivalent to {0,}

<code>+</code> equivalent to {1,}

blocks|key|2270280|text|假设这是您的正则表达式：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2270281|/%5E[a-z\xE4\xF6\xFC]*[A-Z\xC4\xD6\xDC]([A-Z\xC4\xD6\xDC\xDF]%2B%7C[a-z\xE4\xF6\xFC\xDF]{3,})/|code-block|syntax|javascript|2270282|以下是对正则表达式的解释：|2270283|"%5E"+%2B++++++++++++++++++++++++++++++//+Assert+position+at+the+beginning+of+a+line+(at+beginning+of+the+string+or+after+a+line+break+character)
"[a-z\xE4\xF6\xFC]"+%2B++++++++++++++//+Match+a+single+character+present+in+the+list+below
++++++++++++++++++++++++++++++++++++++//+A+character+in+the+range+between+“a”+and+“z”
++++++++++++++++++++++++++++++++++++++//+ASCII+character+0xE4+(228+decimal)
++++++++++++++++++++++++++++++++++++++//+ASCII+character+0xF6+(246+decimal)
++++++++++++++++++++++++++++++++++++++//+ASCII+character+0xFC+(252+decimal)
+++"*"+%2B++++++++++++++++++++++++++++++//+Between+zero+and+unlimited+times,+as+many+times+as+possible,+giving+back+as+needed+(greedy)
"[A-Z\xC4\xD6\xDC]"+%2B++++++++++++++//+Match+a+single+character+present+in+the+list+below
++++++++++++++++++++++++++++++++++++++//+A+character+in+the+range+between+“A”+and+“Z”
++++++++++++++++++++++++++++++++++++++//+ASCII+character+0xC4+(196+decimal)
++++++++++++++++++++++++++++++++++++++//+ASCII+character+0xD6+(214+decimal)
++++++++++++++++++++++++++++++++++++++//+ASCII+character+0xDC+(220+decimal)
"("+%2B++++++++++++++++++++++++++++++//+Match+the+regular+expression+below+and+capture+its+match+into+backreference+number+1
++++++++++++++++++++++++++++++++++++++//+Match+either+the+regular+expression+below+(attempting+the+next+alternative+only+if+this+one+fails)
++++++"[A-Z\xC4\xD6\xDC\xDF]"+%2B++++++++++//+Match+a+single+character+present+in+the+list+below
++++++++++++++++++++++++++++++++++++++++++++//+A+character+in+the+range+between+“A”+and+“Z”
++++++++++++++++++++++++++++++++++++++++++++//+ASCII+character+0xC4+(196+decimal)
++++++++++++++++++++++++++++++++++++++++++++//+ASCII+character+0xD6+(214+decimal)
++++++++++++++++++++++++++++++++++++++++++++//+ASCII+character+0xDC+(220+decimal)
++++++++++++++++++++++++++++++++++++++++++++//+ASCII+character+0xDF+(223+decimal)
+++++++++"%2B"+%2B++++++++++++++++++++++++++++++//+Between+one+and+unlimited+times,+as+many+times+as+possible,+giving+back+as+needed+(greedy)
+++"%7C"+%2B++++++++++++++++++++++++++++++//+Or+match+regular+expression+number+2+below+(the+entire+group+fails+if+this+one+fails+to+match)
++++++"[a-z\xE4\xF6\xFC\xDF]"+%2B++++++++++//+Match+a+single+character+present+in+the+list+below
++++++++++++++++++++++++++++++++++++++++++++//+A+character+in+the+range+between+“a”+and+“z”
++++++++++++++++++++++++++++++++++++++++++++//+ASCII+character+0xE4+(228+decimal)
++++++++++++++++++++++++++++++++++++++++++++//+ASCII+character+0xF6+(246+decimal)
++++++++++++++++++++++++++++++++++++++++++++//+ASCII+character+0xFC+(252+decimal)
++++++++++++++++++++++++++++++++++++++++++++//+ASCII+character+0xDF+(223+decimal)
+++++++++"{3,}"+%2B+++++++++++++++++++++++++++//+Between+3+and+unlimited+times,+as+many+times+as+possible,+giving+back+as+needed+(greedy)
")"++|2270284|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Assuming this is your regex:

<pre><code>/^[a-z\xE4\xF6\xFC]*[A-Z\xC4\xD6\xDC]([A-Z\xC4\xD6\xDC\xDF]+|[a-z\xE4\xF6\xFC\xDF]{3,})/
</code></pre>

The following would be an explanation for the regex:

<pre><code>"^" + // Assert position at the beginning of a line (at beginning of the string or after a line break character)
"[a-z\xE4\xF6\xFC]" + // Match a single character present in the list below
 // A character in the range between “a” and “z”
 // ASCII character 0xE4 (228 decimal)
 // ASCII character 0xF6 (246 decimal)
 // ASCII character 0xFC (252 decimal)
 "*" + // Between zero and unlimited times, as many times as possible, giving back as needed (greedy)
"[A-Z\xC4\xD6\xDC]" + // Match a single character present in the list below
 // A character in the range between “A” and “Z”
 // ASCII character 0xC4 (196 decimal)
 // ASCII character 0xD6 (214 decimal)
 // ASCII character 0xDC (220 decimal)
"(" + // Match the regular expression below and capture its match into backreference number 1
 // Match either the regular expression below (attempting the next alternative only if this one fails)
 "[A-Z\xC4\xD6\xDC\xDF]" + // Match a single character present in the list below
 // A character in the range between “A” and “Z”
 // ASCII character 0xC4 (196 decimal)
 // ASCII character 0xD6 (214 decimal)
 // ASCII character 0xDC (220 decimal)
 // ASCII character 0xDF (223 decimal)
 "+" + // Between one and unlimited times, as many times as possible, giving back as needed (greedy)
 "|" + // Or match regular expression number 2 below (the entire group fails if this one fails to match)
 "[a-z\xE4\xF6\xFC\xDF]" + // Match a single character present in the list below
 // A character in the range between “a” and “z”
 // ASCII character 0xE4 (228 decimal)
 // ASCII character 0xF6 (246 decimal)
 // ASCII character 0xFC (252 decimal)
 // ASCII character 0xDF (223 decimal)
 "{3,}" + // Between 3 and unlimited times, as many times as possible, giving back as needed (greedy)
")" 
</code></pre>

blocks|key|3905084|text|我假设正则表达式中缺少的)/只是您的一个剪切粘贴错误；它们存在于DynaCloud+source+code中。没有出现的是一个结束锚($)，我对此感到惊讶。相关代码如下：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3905085|var+elems+=+jQuery(this).text()
++++++++++++.replace(/[%5EA-Z\xC4\xD6\xDCa-z\xE4\xF6\xFC\xDF0-9_]/g,+'+')
++++++++++++.replace(jQuery.dynaCloud.stopwords,+'+')
++++++++++++.split('+');
var+word+=+
++/%5E[a-z\xE4\xF6\xFC]*[A-Z\xC4\xD6\xDC]([A-Z\xC4\xD6\xDC\xDF]%2B%7C[a-z\xE4\xF6\xFC\xDF]{3,})/;|code-block|syntax|javascript|3905086|第一条语句过滤掉不需要的字符，但保留数字和下划线。第二个语句尝试匹配一个由ASCII字母和一些非ASCII字母组成的单词，这些字母在(例如)德语中使用。但是，一旦用完了要匹配的字母，就可以继续匹配任何字符，而不仅仅是第一个正则表达式中列出的字符。此外，单词中的任何数字或下划线都会导致该单词被分解为两个或更多个单词。|3905087|我会尝试将正则表达式固定在末尾，并添加对数字和下划线的支持，如下所示：|3905088|/%5E[a-z\xE4\xF6\xFC]*[A-Z\xC4\xD6\xDC]([A-Z\xC4\xD6\xDC\xDF0-9_]%2B%7C[a-z\xE4\xF6\xFC\xDF0-9_]{3,})$/g|3905089|此正则表达式仅用于说明目的；它并不是一种解决方案。首先，我对数字和下划线的位置做了一个大胆的猜测。另一方面，它现在可以匹配以数字和下划线结尾的单词，这可能不是您想要的。|3905090|entityMap|0|LINK|mutability|MUTABLE|url|http://johannburkard.de/resources/Johann/jquery.dynacloud-5.js^0|C|2|1V|1|W|L|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@$9|11|A|12|B|C]|$9|13|A|14|B|C]]|D|@$9|15|A|16|1|17]]|E|$]]|$1|F|3|G|5|H|7|18|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|19|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|1A|8|@]|D|@]|E|$]]|$1|O|3|P|5|H|7|1B|8|@]|D|@]|E|$I|J]]|$1|Q|3|R|5|6|7|1C|8|@]|D|@]|E|$]]|$1|S|3|-4|5|6|7|1D|8|@]|D|@]|E|$]]]|T|$U|$5|V|W|X|E|$Y|Z]]]]

I'll assume the <code>)/</code> that's missing from the regex is just a cut-n-paste error on your part; they're present in the <a href="http://johannburkard.de/resources/Johann/jquery.dynacloud-5.js" rel="nofollow">DynaCloud source code</a>. What's not present is an end anchor (<code>$</code>), which I find surprising. Here's the relevant code:

<pre><code>var elems = jQuery(this).text()
 .replace(/[^A-Z\xC4\xD6\xDCa-z\xE4\xF6\xFC\xDF0-9_]/g, ' ')
 .replace(jQuery.dynaCloud.stopwords, ' ')
 .split(' ');
var word = 
 /^[a-z\xE4\xF6\xFC]*[A-Z\xC4\xD6\xDC]([A-Z\xC4\xD6\xDC\xDF]+|[a-z\xE4\xF6\xFC\xDF]{3,})/;
</code></pre>

The first statement filters out unwanted characters, but leaves digits and underscores alone. The second statement tries to match a word consisting of ASCII letters plus a few non-ASCII letters that are used in (for example) German. However, once it runs out of letters to match, it's free to continue matching any characters, not just those listed in the first regex. Also, any digits or underscores in a word will cause the word to be broken up into two or more words.

I would try anchoring the regex at the end and adding support for digits and underscores, like this:

<pre><code>/^[a-z\xE4\xF6\xFC]*[A-Z\xC4\xD6\xDC]([A-Z\xC4\xD6\xDC\xDF0-9_]+|[a-z\xE4\xF6\xFC\xDF0-9_]{3,})$/g
</code></pre>

This regex is just for illustration purposes; it's not intended to be a solution. For one thing, I made a wild guess on the positions of the digits and underscores. For another thing, it can now match words that end with digits and underscores, and you might not want that.

I'm not very well versed with regular expressions so i need some help. I'm using a <code>jQuery</code> dynacloud plugin that breaks at an identified point in my code when a regex match happens. i need someone to help me figure out what this regex matches

<pre><code>/^[a-z\xE4\xF6\xFC]*[A-Z\xC4\xD6\xDC]([A-Z\xC4\xD6\xDC\xDF]+|[a-z\xE4\xF6\xFC\xDF]{3,}
</code></pre>

Any help please!!

Meaning of this RegEx

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我不太精通正则表达式，所以我需要一些帮助。我使用的是一个jQuery dynacloud插件，当正则表达式匹配发生时，它会在我的代码中的某个标识点中断。我需要有人帮我找出这个正则表达式匹配的是什么/^[a-z\xE4\xF6\xFC]*[A-Z\xC4\xD6\xDC]([A-Z\xC4\xD6\xDC\xDF]+|[a-z\xE4\xF6\xFC\xDF]{3,}请帮帮忙！！

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