regex101: JavaScript Match Workspace

Group 1(\w+)

\w+any word character, repeated at least once

Non-Capturing Group(?:(?:=|:)\w+)?

?repeats the group contents below at most once:

Non-Capturing Group(?:=|:)

1st Alternative=

=the literal = (61₁₀ / 75₈ / 3D₁₆)

2nd Alternative:

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\w+any word character, repeated at least once

$end of line

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

Search reference

Regular Expression

(\w+)(?:(?:=|:)\w+)?$

New

https://dev.testapi.com/api/v1/properties?id:xyz&surname:kronenberg&active=true
https://dev.testapi.com/api/v1/properties?id=xyz&surname:kronenberg&property_type:true
https://dev.testapi.com/api/v1/properties?id=xyz&surname:kronenberg&active:true
https://dev.testapi.com/api/v1/properties?id=xyz&surname:kronenberg&user_id:true
dev.testapi.com/api/v1/properties?id=xyz&blabla
dev.testapi.com/api/v1/properties?id=xyz
dev.testapi.com/api/v1/properties?id=xyz

Regular Expressions 101

Regular Expression

Extraction