RegEx：完美的哈希标签正则表达式

Question

This is what I have so far:

\s#([^ ]*)

Example : http://regexr.com?2te3d

It works pretty well except hashtags at the beginning of strings don't get picked up by my RegEx.

How should I modify it to pick these ones up as well? The \\b command doesn't seem to work the same way as it does with normal words.

Answer 1

如果它只是字符串的开头，则可以执行以下操作：

(^|\s)#([^ ]*)

Answer 2

试试这个正则表达式： \\B#([^ ]+)它匹配所有标签，但我认为不应该匹配网址中的标签

Answer 3

Given this input: #first #second # #third #weird#tag #with-minus #

This: /(^|\\s)#([^\\s]+)/g will skip empty #'s and will only match:

• #first
• #second
• #third
• #weird#tag
• #with-minus