Remove “(optional)” text from checkout fields in Woocommerce 3.4+

I was previously using this answer to hide checkout fields based on chosen shipping method, it worked fine until an update (3.4.2 current version) I think not sure what has changed but it doesn’t work as intended anymore.

Previously when local pickup was chosen some fields were hidden and made optional and when delivery was chosen it would show those fields again all via dynamically without reloading the page.

Now it shows and hides the fields as required however, when delivery is chosen it is showing the correct fields marked as mandatory but also has the (optional) sign next to it and it makes it optional. See picture below.

Here’s my modified snipper below:

add_filter('woocommerce_default_address_fields', 'custom_default_checkout_fields', 10, 1 );
function custom_default_checkout_fields( $address_fields ) {
$custom_fields = array( 'country', 'address_1', 'address_2', 'state', 'postcode');
foreach($custom_fields as $field)
    $address_fields[$field]['required'] = false;
return $address_fields;
}

add_action( 'wp_footer', 'custom_checkout_field_script' );
function custom_checkout_field_script() {

$pickpoint = 'local_pickup:2';
$free_delivery = 'free_shipping:1';
$flat_rate = 'flat_rate:3';

$required = esc_attr__( 'required', 'woocommerce' );
?>
<script>
    jQuery(function($){

        var shippingMethod = $('input[name^="shipping_method"]:checked'),
            required = '<abbr class="required" title="<?php echo $required; ?>">*</abbr>',
            shippingChecked = $('input#ship-to-different-address-checkbox');

        shippingChecked.change( function(){
            console.log('Shipping Checked: '+shippingChecked.prop('checked'));
        });

        function showHide( actionToDo='show', selector='' ){
            if( actionToDo == 'show' )
                $(selector).show(function(){
                    $(this).addClass("validate-required");
                    $(this).removeClass("woocommerce-validated");
                    $(this).removeClass("woocommerce-invalid woocommerce-invalid-required-field");
                    if( $(selector+' > label > abbr').html() == undefined )
                        $(selector+' label').append(required);
                });
            else
                $(selector).hide(function(){
                    $(this).removeClass("validate-required");
                    $(this).removeClass("woocommerce-validated");
                    $(this).removeClass("woocommerce-invalid woocommerce-invalid-required-field");
                    if( $(selector+' > label > abbr').html() != undefined )
                        $(selector+' label > .required').remove();
                });
        }

        if( shippingMethod.val() == '<?php echo $pickpoint; ?>' )
        {
            showHide('show','#billing_country_field' );
            showHide('hide','#billing_address_1_field' );
            showHide('hide','#billing_address_2_field' );
            showHide('hide','#billing_postcode_field' );
            showHide('hide','#billing_state_field' );
        }
        else if( shippingMethod.val() == '<?php echo $free_delivery; ?>' || '<?php echo $flat_rate; ?>')
        {
            showHide('show','#billing_address_1_field');
            showHide('show','#billing_address_2_field');
            showHide('show','#billing_postcode_field');
            showHide('hide','#billing_state_field');
            showHide('hide','#billing_country_field');
        }

        $( 'form.checkout' ).on( 'change', 'input[name^="shipping_method"]', function() {
            var shipMethod = $('input[name^="shipping_method"]:checked');
            if( shipMethod.val() == '<?php echo $pickpoint; ?>' )
            {
                showHide('show','#billing_country_field');
                showHide('hide','#billing_address_1_field');
                showHide('hide','#billing_address_2_field');
                showHide('hide','#billing_postcode_field');
                showHide('hide','#billing_state_field');
            }
            else if( shipMethod.val() == '<?php echo $free_delivery; ?>' || '<?php echo $flat_rate; ?>')
            {
                showHide('show','#billing_address_1_field');
                showHide('show','#billing_address_2_field');
               showHide('show','#billing_postcode_field');
                showHide('hide','#billing_state_field');
                showHide('hide','#billing_country_field');
            }
            else
            {
                showHide('show','#billing_address_1_field');
                showHide('show','#billing_address_2_field');
                showHide('show','#billing_postcode_field');
                showHide('show','#billing_state_field');
                showHide('show','#billing_country_field');
            }
        });

        $( 'input#ship-to-different-address-checkbox' ).click( function() {
            var shipMethod = $('input[name^="shipping_method"]:checked');
            if( shipMethod.val() == '<?php echo $pickpoint; ?>' && shippingChecked.prop('checked') == true )
            {
                showHide('show','#billing_country_field');
                showHide('hide','#billing_address_1_field');
                showHide('hide','#billing_address_2_field');
                showHide('hide','#billing_postcode_field');
                showHide('hide','#billing_state_field');

                showHide('show','#shipping_country_field');
                showHide('hide','#shipping_address_1_field');
                showHide('hide','#shipping_address_2_field');
                showHide('hide','#shipping_postcode_field');
                showHide('hide','#shipping_state_field');
            }
            else if( shipMethod.val() == '<?php echo $free_delivery; ?>' || '<?php echo $flat_rate; ?>' && shippingChecked.prop('checked') == true )
            {
                showHide('show','#billing_address_1_field');
                showHide('show','#billing_address_2_field');
                showHide('show','#billing_postcode_field');
                showHide('hide','#billing_state_field');
                showHide('hide','#billing_country_field');

                showHide('show','#shipping_address_1_field');
                showHide('show','#shipping_address_2_field');
                showHide('show','#shipping_postcode_field');
                showHide('hide','#shipping_state_field');
                showHide('hide','#shipping_country_field');
            }
            else if( shippingChecked.prop('checked') == false )
            {
                showHide('show','#shipping_address_1_field');
                showHide('show','#shipping_address_2_field');
                showHide('hide','#shipping_state_field');
                showHide('hide','#shipping_country_field');
            }
        });
    });
</script>
<?php
}

Any pointers would be much appreciated!

Answer

Update 2

To remove “(optional)” text from checkout fields labels introduced with Woocommerce release 3.4, just as it was before, you will need to add the following code:

// PHP: Remove "(optional)" from our non required fields
add_filter( 'woocommerce_form_field' , 'remove_checkout_optional_fields_label', 10, 4 );
function remove_checkout_optional_fields_label( $field, $key, $args, $value ) {
    // Only on checkout page
    if( is_checkout() && ! is_wc_endpoint_url() ) {
        $optional = '&nbsp;<span class="optional">(' . esc_html__( 'optional', 'woocommerce' ) . ')</span>';
        $field = str_replace( $optional, '', $field );
    }
    return $field;
}

// JQuery: Needed for checkout fields to Remove "(optional)" from our non required fields
add_filter( 'wp_footer' , 'remove_checkout_optional_fields_label_script' );
function remove_checkout_optional_fields_label_script() {
    // Only on checkout page
    if( ! ( is_checkout() && ! is_wc_endpoint_url() ) ) return;

    $optional = '&nbsp;<span class="optional">(' . esc_html__( 'optional', 'woocommerce' ) . ')</span>';
    ?>
    <script>
    jQuery(function($){
        // On "update" checkout form event
        $(document.body).on('update_checkout', function(){
            $('#billing_country_field label > .optional').remove();
            $('#billing_address_1_field label > .optional').remove();
            $('#billing_postcode_field label > .optional').remove();
            $('#billing_state_field label > .optional').remove();
            $('#shipping_country_field label > .optional').remove();
            $('#shipping_address_1_field label > .optional').remove();
            $('#shipping_postcode_field label > .optional').remove();
            $('#shipping_state_field label > .optional').remove();
        });
    });
    </script>
    <?php
}

Code goes in function.php file of your active child theme (or active theme). Tested and works in Woocommerce version 3.4+.

You could merge the included jQuery code with your existing jQuery code…