Regular Expressions 101

\na line-feed (newline) character (ASCII 10)

\s{4}any whitespace character, repeated exactly 4 times

\"the literal " (34₁₀ / 42₈ / 22₁₆)

logUserthe literal text logUser (case sensitive)

\"the literal " (34₁₀ / 42₈ / 22₁₆)

Positive Lookahead(?=.*\:)

.*any character (except for line terminators), repeated any number of times

\:the literal : (58₁₀ / 72₈ / 3A₁₆)

Group 1([\s\:]+)

Character Class[\s\:]+

+matches at least one character from the set below:

\sany whitespace character

\:the literal : (58₁₀ / 72₈ / 3A₁₆)

Group 2([^\,}]+?)

Negated Character Class[^\,}]+?

+?matches at least one character outside the set below:

\,the literal , (44₁₀ / 54₈ / 2C₁₆)

}the literal } (125₁₀ / 175₈ / 7D₁₆)

Group 3(\,|\})

1st Alternative\,

\,the literal , (44₁₀ / 54₈ / 2C₁₆)

2nd Alternative\}

\}the literal } (125₁₀ / 175₈ / 7D₁₆)

Global pattern flags

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

\n\s{4}\"logUser\"(?=.*\:)([\s\:]+)([^\,}]+?)(\,|\})

New

{
    "abc": 123,
    "segundoNivel": {
      "logUser": 123,
    },
    "logUser": 123,
}