Opal jQuery 0.5.2 has been released. The opal-jquery gem provides DOM access to Opal Ruby (Ruby-to-JavaScript Transpiler) by wrapping jQuery and providing a nice Ruby syntax for dealing with jQuery instances. GitHub : https://github.com/opal/opal-jquery RubyGem : https://rubygems.org/gems/opal-jquery Change Log (0.5.2 2024-07-31): - Fix issue with incorrectly auto-setting content-type as 'application/json' when payload is null (#122)