Regular Expressions 101

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Negative Lookahead(?!([^{]*{[^{]*})?[^{]*})

Group 1([^{]*{[^{]*})?

?repeats the group contents below at most once:

Negated Character Class[^{]*

*matches any number of characters outside the set below:

{the literal { (123₁₀ / 173₈ / 7B₁₆)

Negated Character Class[^{]*

*matches any number of characters outside the set below:

{the literal { (123₁₀ / 173₈ / 7B₁₆)

}the literal } (125₁₀ / 175₈ / 7D₁₆)

Negated Character Class[^{]*

*matches any number of characters outside the set below:

{the literal { (123₁₀ / 173₈ / 7B₁₆)

}the literal } (125₁₀ / 175₈ / 7D₁₆)

Negative Lookahead(?!([^[]*\[[^[]*])?[^[]*])

Group 2([^[]*\[[^[]*])?

?repeats the group contents below at most once:

Negated Character Class[^[]*

*matches any number of characters outside the set below:

[the literal [ (91₁₀ / 133₈ / 5B₁₆)

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

Negated Character Class[^[]*

*matches any number of characters outside the set below:

[the literal [ (91₁₀ / 133₈ / 5B₁₆)

]the literal ] (93₁₀ / 135₈ / 5D₁₆)

Negated Character Class[^[]*

*matches any number of characters outside the set below:

[the literal [ (91₁₀ / 133₈ / 5B₁₆)

]the literal ] (93₁₀ / 135₈ / 5D₁₆)

Global pattern flags

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

,(?!([^{]*{[^{]*})?[^{]*})(?!([^[]*\[[^[]*])?[^[]*])

New

"a":[{"b":2,"c":["d"]}],"b":2
"a":[{"b":2,"c":{"d":9}}],"b":2
"a":[{"b":2,"c":[{"d":9}]}],"b":2