Extract hashtags from complex string using regex

问题

I have a crazy string, something like:

sun #plants #!wood% ##arebaba#tey   travel#blessed    #weed das#$#F!@D!AAAA

I want to extract all "words" (also containing special characters) that begin with # or that have a space right before, taking the following as a result:

[
  'sun',
  'plants',
  '!wood%',
  'arebaba',
  'tey',
  'travel',
  'blessed',
  'weed',
  'das',
  '$',
  'F!@D!AAAA'
]

How do I get this using regex?

回答1:

You can use match using regex: [^#\s]+:

var str = 'sun #plants #!wood% ##arebaba#tey   travel#blessed    #weed das#$#F!@D!AAAA';
    
var arr = str.match(/[^\s#]+/g);

console.log(arr);

RegEx Demo

回答2:

Just using match you could get all the group 1 matches into an array.

(?:^|[ #]+)([^ #]+)(?=[ #]|$)

Easy!

 (?: ^ | [ #]+ )
 ( [^ #]+ )                    # (1)
 (?= [ #] | $ )

Or, if you feel it's this simple, then just use ([^ #]+) or [^ #]+
which gets the same thing (like split in reverse).

来源：https://stackoverflow.com/questions/43398984/extract-hashtags-from-complex-string-using-regex