php
<?php
/**
 * Restrict address autocomplete to a specific country
 *
 * @link https://wpforms.com/developers/how-to-restrict-address-autocomplete-to-a-specific-country/
 */
 
function wpf_dev_geo_autocomplete_default_country() {
    ?>
    <script type="text/javascript">
        jQuery(function($){
            var formID = '1000'; // Change form ID
            var addressFieldID = '25'; // Change address field ID
            var inputFieldElement = document.getElementById('wpforms-' + formID + '-field_' + addressFieldID);
            if (inputFieldElement) {
                var autocomplete = new google.maps.places.Autocomplete(inputFieldElement);
                autocomplete.setComponentRestrictions({ 'country': ['au'] });
            }
        });
    </script>
    <?php
}
add_action('wpforms_wp_footer_end', 'wpf_dev_geo_autocomplete_default_country', 30);