Examples
Interactive examples in the browser (official dataset bundled). Each page includes a live demo and source code.
Address input
Select a prefecture to load its municipalities into a dropdown. Styled like a typical address form.
View the address input example
Municipality validation
With a prefecture selected, enter a municipality name. Validation runs when the field loses focus.
View the municipality validation example
Nationwide municipalities
Like a real-estate area filter: checkbox lists of every municipality, grouped by prefecture.