https://textieldrukshop.nl/wp-content/plugins/wc-postcode-checker/assets/js/nl-account-page.js?ver=3.7.2

1jQuery( function ( $ ) {
2
3	function localize_address_fields( address_type ) {
4		const $country = $( `#${address_type}_country` );
5		
6		// If no such element is found, just return
7		if ( ! $country.length ) {
8			return;
9		}
10		
11		// Convert country codes to uppercase for case-insensitive comparison
12		const countryCode              = ( $country.val() || '' ).trim().toUpperCase();
13		// Convert field_countries object to array
14		const fieldCountriesArrayUpper = $.map( wcnlpc_nl_account_page.postcode_field_countries, function( value ) {
15			return value.trim().toUpperCase();
16		} );
17		
18		// Hide custom NL fields by default when country not NL
19		if ( $.inArray( countryCode, fieldCountriesArrayUpper ) === -1 ) {
20			$( `#${address_type}_street_name_field` ).hide();
21			$( `#${address_type}_house_number_field` ).hide();
22			$( `#${address_type}_house_number_suffix_field` ).hide();
23			$( `#${address_type}_address_1_field` ).show();
24			$( `#${address_type}_address_2_field` ).show();
25		} else {
26			$( `#${address_type}_street_name_field` ).show();
27			$( `#${address_type}_house_number_field` ).show();
28			$( `#${address_type}_house_number_suffix_field` ).show();
29			$( `#${address_type}_address_1_field` ).hide();
30			$( `#${address_type}_address_2_field` ).hide();
31		}
32	}
33
34	localize_address_fields( 'billing' );
35	localize_address_fields( 'shipping' );
36
37	$( '#billing_country, #shipping_country' ).on( 'change', function() {
38		let id           = $( this ).attr( 'id' );
39		let address_type = id.replace( '_country', '' );
40		localize_address_fields( address_type) ;
41	} );
42
43} );