Code for WooCommerce site to disable UPS shipping options if shipping to a PO Box (because UPS doesn't ship to PO Boxes)

WooCommerce-disable-UPS-shipping-options-if-shipping-to-a-PO-Box.php

<!-- You can add this to your footer.php file -->

<!-- UPS does'nt ship to PO Boxes, so if your site has multiple carriers (ex. USPS, FedEx & UPS) you would disable UPS for PO boxes -->

<!-- ** REPLACE ** the ID below to be the one for your WooCommerce checkout page !!!!!! -->
<?php if($post->ID == 2309) { // only works on checkout page ?> 
    <script>

        // find the billing and shipping email fields to use for event listeners
        // This code will fire when the customer clicks off of either email field
        var billingemailfield = document.getElementById('billing_email');
        var shippingemailfield = document.getElementById('shipping_email');

        // after they are done typing in their billing email
        billingemailfield.addEventListener('blur', (event) => {

            // get the address fields from the WooCommerce checkout page
            var getbillingaddressone = document.getElementById('billing_address_1');
            var getbillingaddresstwo = document.getElementById('billing_address_2');
            var getshippingaddressone = document.getElementById('shipping_address_1');
            var getshippingaddresstwo = document.getElementById('shipping_address_2');

            // get the values from those fields
            var baovalue = getbillingaddressone.value;
            var batvalue = getbillingaddresstwo.value;
            var saovalue = getshippingaddressone.value;
            var satvalue = getshippingaddresstwo.value;

            // Make the addresses lower case to make checking for PO box easier
            var lowerbao = baovalue.toLowerCase();
            var lowerbat = batvalue.toLowerCase();
            var lowersao = saovalue.toLowerCase();
            var lowersat = satvalue.toLowerCase();

            // strip out any periods from the address to make checking for PO box easier
            var poboxcheckbao = lowerbao.replace(/\./g,'');
            var poboxcheckbat = lowerbat.replace(/\./g,'');
            var poboxchecksao = lowersao.replace(/\./g,'');
            var poboxchecksat = lowersat.replace(/\./g,'');

            // combine the addresses to make checking easier (in case they put po box on the 2nd address line instead of 1st)
            var poboxcheckbilling = poboxcheckbao.concat(' ', poboxcheckbat);
            var poboxcheckshipping = poboxchecksao.concat(' ', poboxchecksat);

            // text we will check for in the address fields to see if they are shipping to a PO box
            const poboxstringone = "po box";
            const poboxstringtwo = "pobox";
            const poboxstringthree = "post office box";

            // check if it is true that the billing or shipping address contain po box. Returns true or false
            var doesbillingcontainpoboxstringone = poboxcheckbilling.includes(poboxstringone);
            var doesbillingcontainpoboxstringtwo = poboxcheckbilling.includes(poboxstringtwo);
            var doesbillingcontainpoboxstringthree = poboxcheckbilling.includes(poboxstringthree);

            var doesshippingcontainpoboxstringone = poboxcheckshipping.includes(poboxstringone);
            var doesshippingcontainpoboxstringtwo = poboxcheckshipping.includes(poboxstringtwo);
            var doesshippingcontainpoboxstringthree = poboxcheckshipping.includes(poboxstringthree);

            // if the shipping address was not typed in, only check the billing address values for PO Box
            if (poboxcheckshipping.length == 1) {

                // check if they typed in po box in the billing address
                if (doesbillingcontainpoboxstringone == true || doesbillingcontainpoboxstringtwo == true || doesbillingcontainpoboxstringthree == true) {

                    // ** REPLACE ** the IDs below with the ones you want to disable on your WooCommerce checkout !!!!!

                    // check that the shipping elements exist before hiding them to prevent errors
                    var shipping_method_0ExistsCheck = document.getElementById("shipping_method_0");
                    if (shipping_method_0_ExistsCheck) {

                        // Notice the 'parentElement' below, that's because WooCommerce does something like this
                        // so you can't just target the <li> itself
                        // <ul>
                        //     <li>
                        //         <input type="radio" name="shipping_method[0]" id="shipping_method_0" value="method0">
                        //         <label for="shipping_method_0">Free US Shipping (UPS)</label>					
                        //     </li>
                        // </ul>

                        document.getElementById("shipping_method_0").parentElement.style.display = "none";
                    }

                    var shipping_method_1ExistsCheck = document.getElementById("shipping_method_1");
                    if (shipping_method_1ExistsCheck) {
                        document.getElementById("shipping_method_1").parentElement.style.display = "none";
                    }

                    // This jQuery listens for when the checkout has been updated and hides the UPS options

                    jQuery(document.body).on('updated_checkout', function(){

                        // ** REPLACE ** the IDs below with the ones you want to disable (like above) !!!!!

                        // check that the shipping elements exist before hiding them to prevent errors
                        var shipping_method_0ExistsCheck = document.getElementById("shipping_method_0");
                        if (shipping_method_0_ExistsCheck) {
                            document.getElementById("shipping_method_0").parentElement.style.display = "none";
                        }

                        var shipping_method_1ExistsCheck = document.getElementById("shipping_method_1");
                        if (shipping_method_1ExistsCheck) {
                            document.getElementById("shipping_method_1").parentElement.style.display = "none";
                        }
                    });	
                }
            }

            // if the shipping address was typed in (not just the billing), only check the shipping address values for PO Box
            if (poboxcheckshipping.length > 1) {

                // check if they typed in po box in the shipping address
                if (doesshippingcontainpoboxstringone == true || doesshippingcontainpoboxstringtwo == true || doesshippingcontainpoboxstringthree == true) {

                    // ** REPLACE ** the IDs below with the ones you want to disable on your WooCommerce checkout !!!!!

                    // check that the shipping elements exist before hiding them to prevent errors
                    var shipping_method_0ExistsCheck = document.getElementById("shipping_method_0");
                    if (shipping_method_0_ExistsCheck) { 
                        document.getElementById("shipping_method_0").parentElement.style.display = "none";
                    }

                    var shipping_method_1ExistsCheck = document.getElementById("shipping_method_1");
                    if (shipping_method_1ExistsCheck) {
                        document.getElementById("shipping_method_1").parentElement.style.display = "none";
                    }

                    // This jQuery listens for when the checkout has been updated and hides the UPS options

                    jQuery(document.body).on('updated_checkout', function(){

                        // ** REPLACE ** the IDs below with the ones you want to disable (like above) !!!!!

                        // check that the shipping elements exist before hiding them to prevent errors
                        var shipping_method_0ExistsCheck = document.getElementById("shipping_method_0");
                        if (shipping_method_0_ExistsCheck) {
                            document.getElementById("shipping_method_0").parentElement.style.display = "none";
                        }

                        var shipping_method_1ExistsCheck = document.getElementById("shipping_method_1");
                        if (shipping_method_1ExistsCheck) {
                            document.getElementById("shipping_method_1").parentElement.style.display = "none";
                        }
                    });
                }
            }
        });

        // after they are done typing in their shipping email (in case they do this as well)
        shippingemailfield.addEventListener('blur', (event) => {
            var getbillingaddressone = document.getElementById('billing_address_1');
            var getbillingaddresstwo = document.getElementById('billing_address_2');
            var getshippingaddressone = document.getElementById('shipping_address_1');
            var getshippingaddresstwo = document.getElementById('shipping_address_2');

            var baovalue = getbillingaddressone.value;
            var batvalue = getbillingaddresstwo.value;
            var saovalue = getshippingaddressone.value;
            var satvalue = getshippingaddresstwo.value;

            /* Make the addresses lower case */
            var lowerbao = baovalue.toLowerCase();
            var lowerbat = batvalue.toLowerCase();
            var lowersao = saovalue.toLowerCase();
            var lowersat = satvalue.toLowerCase();

            // strip out the periods from the address to make checking for PO box easier
            var poboxcheckbao = lowerbao.replace(/\./g,'');
            var poboxcheckbat = lowerbat.replace(/\./g,'');
            var poboxchecksao = lowersao.replace(/\./g,'');
            var poboxchecksat = lowersat.replace(/\./g,'');

            // combine the addresses to make checking easier
            var poboxcheckbilling = poboxcheckbao.concat(' ', poboxcheckbat);
            var poboxcheckshipping = poboxchecksao.concat(' ', poboxchecksat);

            // things we will check for
            const poboxstringone = "po box";
            const poboxstringtwo = "pobox";
            const poboxstringthree = "post office box";

            // check if it is true that the billing or shipping address contain po box
            var doesbillingcontainpoboxstringone = poboxcheckbilling.includes(poboxstringone);
            var doesbillingcontainpoboxstringtwo = poboxcheckbilling.includes(poboxstringtwo);
            var doesbillingcontainpoboxstringthree = poboxcheckbilling.includes(poboxstringthree);

            var doesshippingcontainpoboxstringone = poboxcheckshipping.includes(poboxstringone);
            var doesshippingcontainpoboxstringtwo = poboxcheckshipping.includes(poboxstringtwo);
            var doesshippingcontainpoboxstringthree = poboxcheckshipping.includes(poboxstringthree);

            // if the shipping address was not typed in, only check the billing address values for PO Box
            if (poboxcheckshipping.length == 1) {

                // check if they typed in po box in the billing address
                if (doesbillingcontainpoboxstringone == true || doesbillingcontainpoboxstringtwo == true || doesbillingcontainpoboxstringthree == true) {

                    // ** REPLACE ** the IDs below with the ones you want to disable on your WooCommerce checkout !!!!!

                    // check that the shipping elements exist before hiding them to prevent errors
                    var shipping_method_0ExistsCheck = document.getElementById("shipping_method_0");
                    if (shipping_method_0_ExistsCheck) { 
                        document.getElementById("shipping_method_0").parentElement.style.display = "none";
                    }

                    var shipping_method_1ExistsCheck = document.getElementById("shipping_method_1");
                    if (shipping_method_1ExistsCheck) {
                        document.getElementById("shipping_method_1").parentElement.style.display = "none";
                    }

                    // This jQuery listens for when the checkout has been updated and hides the UPS options

                    jQuery(document.body).on('updated_checkout', function(){

                        // ** REPLACE ** the IDs below with the ones you want to disable (like above) !!!!!

                        // check that the shipping elements exist before hiding them to prevent errors
                        var shipping_method_0ExistsCheck = document.getElementById("shipping_method_0");
                        if (shipping_method_0_ExistsCheck) {
                            document.getElementById("shipping_method_0").parentElement.style.display = "none";
                        }

                        var shipping_method_1ExistsCheck = document.getElementById("shipping_method_1");
                        if (shipping_method_1ExistsCheck) {
                            document.getElementById("shipping_method_1").parentElement.style.display = "none";
                        }
                    });
                }
            }

            // if the shipping address was also typed in, only check the shipping address values for PO Box
            if (poboxcheckshipping.length > 1) {

                // check if they typed in po box in the shipping address
                if (doesshippingcontainpoboxstringone == true || doesshippingcontainpoboxstringtwo == true || doesshippingcontainpoboxstringthree == true) {

                    // ** REPLACE ** the IDs below with the ones you want to disable on your WooCommerce checkout !!!!!

                    // check that the shipping elements exist before hiding them to prevent errors
                    var shipping_method_0ExistsCheck = document.getElementById("shipping_method_0");
                    if (shipping_method_0_ExistsCheck) { 
                        document.getElementById("shipping_method_0").parentElement.style.display = "none";
                    }

                    var shipping_method_1ExistsCheck = document.getElementById("shipping_method_1");
                    if (shipping_method_1ExistsCheck) {
                        document.getElementById("shipping_method_1").parentElement.style.display = "none";
                    }

                    // This jQuery listens for when the checkout has been updated and hides the UPS options

                    jQuery(document.body).on('updated_checkout', function(){

                        // ** REPLACE ** the IDs below with the ones you want to disable (like above) !!!!!

                        // check that the shipping elements exist before hiding them to prevent errors
                        var shipping_method_0ExistsCheck = document.getElementById("shipping_method_0");
                        if (shipping_method_0_ExistsCheck) {
                            document.getElementById("shipping_method_0").parentElement.style.display = "none";
                        }

                        var shipping_method_1ExistsCheck = document.getElementById("shipping_method_1");
                        if (shipping_method_1ExistsCheck) {
                            document.getElementById("shipping_method_1").parentElement.style.display = "none";
                        }
                    });
			    }
		    }
	    });
	</script>
<?php } ?>
<!-- END OF function to Disable UPS options if PO Box is entered -->