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Maintenance Ruby 3.4 gets fixes, but no new features. Switch to Ruby 4.0 →

instance method

Date#to_json

(?::JSON::State? state) -> ::String
to_json(*args)

Returns a JSON string representing self:

Example
require 'json/add/date'
puts Date.today.to_json

Output:

Example
{"json_class":"Date","y":2023,"m":11,"d":21,"sg":2299161.0}
See also #to_datetime #to_s #to_date #to_time also in 4.0 · 3.3 · 3.2 · 3.1 · 3.0