blocks|key|1458161|text|我建议您通过以下方式进行操作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1458162|(\d%2B)(,\s*\d%2B)*|code-block|syntax|javascript|1458163|这将适用于包含1个或多个元素的列表。|1458164|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I suggest you to do in the following way:

<pre><code>(\d+)(,\s*\d+)*
</code></pre>

which would work for a list containing 1 or more elements.

blocks|key|1458347|text|此正则表达式从逗号分隔的列表中提取元素，而不考虑元素的内容：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1458348|(.%2B?)(?:,%7C$)|code-block|syntax|javascript|1458349|如果你只是将逗号替换成其他的东西，那么它应该适用于任何分隔符。|1458350|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

This regex extracts an element from a comma separated list, regardless of contents:

<pre><code>(.+?)(?:,|$)
</code></pre>

If you just replace the comma with something else, it should work for any delimiter.

blocks|key|1243386|text|/%5E\d%2B(?:,+?\d%2B)*$/|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1243387|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

blocks|key|1458298|text|如果这对你很重要，它将拒绝在行首或行尾使用无关的逗号。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1458299|((,+)?(%5E)?(possible%7Cvalue%7Cpatterns))*|code-block|syntax|javascript|1458300|将possible%7Cvalue%7Cpatterns替换为与您允许的值匹配的正则表达式。|offset|length|style|CODE|1458301|entityMap^0|0|0|1|N|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

This one will reject extraneous commas at the start or end of the line, if that's important to you.

<pre><code>((, )?(^)?(possible|value|patterns))*
</code></pre>

Replace <code>possible|value|patterns</code> with a regex that matches your allowed values.

blocks|key|1458212|text|我将其用于项目列表，这些项目必须是字母数字的，每个项目的前面都没有下划线。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1458213|%5E(([0-9a-zA-Z][0-9a-zA-Z_]*)([,][0-9a-zA-Z][0-9a-zA-Z_]*)*)$|code-block|syntax|javascript|1458214|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

i used this for a list of items that had to be alphanumeric without underscores at the front of each item.

<pre><code>^(([0-9a-zA-Z][0-9a-zA-Z_]*)([,][0-9a-zA-Z][0-9a-zA-Z_]*)*)$
</code></pre>

blocks|key|1458101|text|为了安全起见，您可能希望指定语言，但是|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1458102|(\d%2B,+?)%2B(\d%2B)?|code-block|syntax|javascript|1458103|应该行得通|1458104|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

You might want to specify language just to be safe, but

<pre><code>(\d+, ?)+(\d+)?
</code></pre>

ought to work

blocks|key|1243524|text|我有一个稍有不同的要求，即解析带有转义逗号的编码字典/哈希表，如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1243525|"1=This+is+something,+2=This+is+something,,with+an+escaped+comma,+3=This+is+something+else"|code-block|syntax|javascript|1243526|我认为这是一个优雅的解决方案，有一个技巧可以避免大量的正则表达式复杂性：|1243527|if+(string.IsNullOrEmpty(encodedValues))
{
++++return+null;
}
else
{
++++var+retVal+=+new+Dictionary<int,+string>();
++++var+reFields+=+new+Regex(@"([0-9]%2B)\=(([A-Za-z0-9\s]%7C(,,))%2B),");
++++foreach+(Match+match+in+reFields.Matches(encodedValues+%2B+","))
++++{
++++++++var+id+=+match.Groups[1].Value;
++++++++var+value+=+match.Groups[2].Value;
++++++++retVal[int.Parse(id)]+=+value.Replace(",,",+",");
++++}
++++return+retVal;
}|1243528|我认为它可以用@"([0-9]%2B),\s?"和parse+on+Groups[0]这样的表达式来适应原始问题。|offset|length|style|CODE|1243529|我希望它对某些人有帮助，并感谢你的提示，让它接近那里，特别是Asaph！|1243530|entityMap^0|0|0|0|0|7|F|W|9|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|Y|8|@$M|Z|N|10|O|P]|$M|11|N|12|O|P]]|9|@]|A|$]]|$1|Q|3|R|5|6|7|13|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|T|$]]

I had a slightly different requirement, to parse an encoded dictionary/hashtable with escaped commas, like this:

<pre><code>"1=This is something, 2=This is something,,with an escaped comma, 3=This is something else"
</code></pre>

I think this is an elegant solution, with a trick that avoids a lot of regex complexity:

<pre><code>if (string.IsNullOrEmpty(encodedValues))
{
 return null;
}
else
{
 var retVal = new Dictionary&lt;int, string&gt;();
 var reFields = new Regex(@"([0-9]+)\=(([A-Za-z0-9\s]|(,,))+),");
 foreach (Match match in reFields.Matches(encodedValues + ","))
 {
 var id = match.Groups[1].Value;
 var value = match.Groups[2].Value;
 retVal[int.Parse(id)] = value.Replace(",,", ",");
 }
 return retVal;
}
</code></pre>

I think it can be adapted to the original question with an expression like <code>@"([0-9]+),\s?"</code> and parse on <code>Groups[0]</code>.

I hope it's helpful to somebody and thanks for the tips on getting it close to there, especially Asaph!

blocks|key|1243667|text|在JavaScript中，使用split来帮助解决问题，并捕获任何负数：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1243668|'-1,2,-3'.match(/(-?\d%2B)(,\s*-?\d%2B)*/)[0].split(',');
//+["-1",+"2",+"-3"]
//+may+need+trimming+if+digits+are+space-separated|code-block|syntax|javascript|1243669|entityMap^0|F|5|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

In JavaScript, use <code>split</code> to help out, and catch any negative digits as well:

<pre><code>'-1,2,-3'.match(/(-?\d+)(,\s*-?\d+)*/)[0].split(',');
// ["-1", "2", "-3"]
// may need trimming if digits are space-separated
</code></pre>

blocks|key|1243708|text|以下代码将匹配任何逗号分隔的单词/数字/空格组合|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1243709|(((.)*,)*)(.)*|code-block|syntax|javascript|1243710|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

The following will match any comma delimited word/digit/space combination

<pre><code>(((.)*,)*)(.)*
</code></pre>

What is the regular expression to validate a comma delimited list like this one:

<pre><code>12365, 45236, 458, 1, 99996332, ......
</code></pre>

Regex for Comma delimited list

验证逗号分隔列表的正则表达式是什么：12365, 45236, 458, 1, 99996332, ......

问逗号分隔列表的正则表达式
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