Question Where can I find the documentation to the Scripting API for the UI?

The UI package documentation: https://docs.unity3d.com/Packages/com.unity.ugui@1.0/manual/index.html

But where can I find the Scripting API to it?

For example for the Dropdown element. Package doc for it: https://docs.unity3d.com/Packages/com.unity.ugui@1.0/manual/script-Dropdown.html

Last Scripting API I found is here: https://docs.unity3d.com/2017.4/Documentation/ScriptReference/UI.Dropdown.html

 

In your first linke

 

Thank you.

Well, that's interesting. I know about the UX problem "banner blindness" but navigation blindness is new to me. It seems that the expectation is to see such a page under the navigation of the containing site. But in this case the page is organized as an individual piece that doesn't belong to the rest of the site.

Or maybe just inattentional blindness or perceptual blindness.

 

The package documentation is just a UX nightmare all over, so no worries.