$.ziptastic('US', 48867, 'your-api-key-here', function(country, state, stateCode, city, zip) {
  console.log(country, state, stateCode, city, zip);
});

var duration = 500;
 
var elements = {
    country: $('#country'),
    state: $('#state'),
    state_short: $('#state-short'),
    city: $('#city'),
    zip: $('#zip')
}
 
// Initially hide the city/state/zip
elements.country.parent().hide();
elements.state.parent().hide();
elements.state_short.parent().hide();
elements.city.parent().hide();
 
var options = {
    "key": "<your-api-key-here>",
    "country": "US"
}
elements.zip.ziptastic(options)
    .on('zipChange', function(evt, country, state, state_short, city, zip) {
        // Country
        elements.country.val(country).parent().show(duration);
 
        // State
        elements.state_short.val(state_short).parent().show(duration);
        elements.state.val(state).parent().show(duration);
 
        // City
        elements.city.val(city).parent().show(duration);
    });
});

var options = {
    "key": "<your-api-key-here>",
    "reverseGeo": true,
    "country": "US"
}