Regular Expressions 101

"value2":the literal text "value2": (case sensitive)

\s*any whitespace character, repeated any number of times

\Kresets the starting point of the reported match. Any previously consumed characters are no longer included in the final match

Negated Character Class[^\s,]*

*matches any number of characters outside the set below:

\sany whitespace character

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Positive Lookahead(?=\s*,)

\s*any whitespace character, repeated any number of times

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

"value2":\s*\K[^\s,]*(?=\s*,)

New

{"value1":5.0,"value2":2.5,"value3":"2019-10-24T15:26:00.000Z","modifier":[]}

{"value1": 5.0,
"value2":  2.5,
"value3": "2019-10-24T15:26:00.000Z", 
"modifier":[]}