使用正则表达式提取器来提取值？

Question

I am trying to extract the value from the following code. Even though my regex expression is fine it is still not extracting the value.

token" value="(.+?)"

this does give me the exact match which I checked using regex101.com

<input type="hidden" name="token" value="GSYGEP2UUWOTMZ2SFV1G5D2M8L247KIG">

what the regex expression should be

Answer 1

Your original regular expression is just fine:

value="(.+?)"

It might be additional spaces, or code problems with it. Let's remove the token" or try to escape " , if necessary.

DEMO 1

DEMO 2

Reference:

• Regular Expressions

Answer 2

Try this

<input(?=(?:[^>"']|"[^"]*"|'[^']*')*?\sname\s*=\s*(['"])\s*token\s*\1)(?=(?:[^>"']|"[^"]*"|'[^']*')*?\svalue\s*=\s*(['"])((?:(?!\2)[\S\s])*)\2)\s+(?:"[\S\s]*?"|'[\S\s]*?'|[^>]*?)+>

The Value content you're after is in Capture Group 3

https://regex101.com/r/HJhStT/1
https://regex101.com/r/8BWONb/1

Explained

 < input                # Input tag

 (?=                    # Name attribute: Assert (a pseudo atomic group)
      (?: [^>"'] | " [^"]* " | ' [^']* ' )*?
      \s name  \s* = \s*     # name = 
      ( ['"] )               # (1), Quote
      \s* token \s*          # token
      \1 
 )
 (?=                    # Value attribute
      (?: [^>"'] | " [^"]* " | ' [^']* ' )*?
      \s value  \s* = \s*    # value =
      ( ['"] )               # (2), Quote
      (                      # (3 start), value content
           (?:
                (?! \2 )
                [\S\s] 
           )*
      )                      # (3 end)
      \2 
 )
 # Just get rest of tag
 \s+ 
 (?: " [\S\s]*? " | ' [\S\s]*? ' | [^>]*? )+
 >