Conditional/Dependent Custom Registration Fields

I’m looking for a way to show/hide certain custom fields based on the selection in another custom field.

For example,
Radio button YES / NO
If yes, then show other field/s. Otherwise, show nothing.

Seems like it should be a simple thing to do… but…

Try “API / Scripting”, there is lot of info.

I’m interested in this as well! If you figure it out I’d love to hear how.