Regular Expressions 101

Pro

,?optionally matches the literal , (44₁₀ / 54₈ / 2C₁₆)

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

\"the literal " (34₁₀ / 42₈ / 22₁₆)

Group 1(\\.|[^\"])+

+repeats the group contents below at least once:

1st Alternative\\.

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

.any character (except for line terminators)

2nd Alternative[^\"]

Negated Character Class[^\"]

\"the literal " (34₁₀ / 42₈ / 22₁₆)

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

:the literal : (58₁₀ / 72₈ / 3A₁₆)

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

nullthe literal text null (case sensitive)

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.

25 tokens

Regular Expression

,?\s*\"(\\.|[^\"])+\"\s*:\s*null

New

{"a": null}
{"a": 123, "b": null}
{"a": 123, "b": null, "c": "foo"}
{"a": 123, "b": null, "c": "foo", "blby\"nazov": false}
{"a": 123, "b": null, "c": "foo", "blby\"nazov\"null hodnotou": null, "d": 1}

Substitution

{"a": null}
{"a": 123, "b": null}
{"a": 123, "b": null, "c": "foo"}
{"a": 123, "b": null, "c": "foo", "blby\"nazov": false}
{"a": 123, "b": null, "c": "foo", "blby\"nazov\"null hodnotou": null, "d": 1}