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Transporting blank values in URL queries

Henning Koch
January 04, 2021Software engineer at makandra GmbH

URLs can transport key/value pairs ("parameters") using this syntax:

/path?foo=bar
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If the value is blank, mind these subtle differences:

URL Meaning
/path?foo= Parameters have a key foo. Its value is an empty string.
/path?foo Parameters have a key foo. Its value is null.
/path Parameters have no key foo.
Posted by Henning Koch to makandra dev (2021-01-04 11:29)