Regular Expressions 101

Group 1(.(?!"score":(-)?[0-9]))*

*repeats the group contents below any number of times:

.any character (except for line terminators)

Negative Lookahead(?!"score":(-)?[0-9])

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

Group 2(-)?

?repeats the group contents below at most once:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

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

(.(?!"score":(-)?[0-9]))*

New

{"score":0,"compare":0,"words":["book","planet","sun","science"],"words":[],"good":[],"bad":[]}
{"score":-1,"compare":0,"words":["book","planet","sun","science"],"words":[],"good":[],"bad":[]}
{"score":1,"compare":0,"words":["book","planet","sun","science"],"words":[],"good":[],"bad":[]}

Substitution

$1