California Prop 65 Conditional Text in WooCommerce

ca-prop-65-woocommerce.php

<?php 
///////////////////////////////////////////////////////////////////////////////////////////////////////
// Show Prop 65 Message Upon State of California Shipping Selection During WooCommerce Checkout
// https://razorfrog.com/california-prop-65-conditional-text-in-woocommerce/
///////////////////////////////////////////////////////////////////////////////////////////////////////

// First Step
// Create Prop 65 warning message and hook it into WooCommerce After Order Review
// "display:none" we have hidden the warning message by default
 
add_action( 'woocommerce_checkout_before_order_review', 'show_prop_message' );
function show_prop_message() {
	echo '<div class="prop65-warning woocommerce-warning" style="display:none;"><p><strong>California Proposition 65 WARNING:</strong> Products may contain lead and other chemicals known to the State of California to cause birth defects or other reproductive harm. <a href="https://www.p65warnings.ca.gov" target="_blank">Learn more</a>.</p></div>';
}
 
// Second Step
// Show or hide warning message based on billing and shipping state
// First trigger is fired on billing state selection in case the "Ship to a different address" checkbox is unselected
// Second trigger is fired if the "Ship to a different address" checkbox is ticked
// Initally the "display:none" hides the warning message by default
 
add_action( 'woocommerce_after_checkout_form', 'show_warning_message' );
function show_warning_message(){  
    ?>
	<script>
        jQuery(document).ready(function($){
            
            // On page load
        
            if($(this).is(":not(:checked)")) {
                if( $('select#billing_state').val() == 'CA' ) $('.prop65-warning').show();
            } else {
                if( $('select#shipping_state').val() == 'CA' ) $('.prop65-warning').show();
            }
            
            // On "State" dropdown change

			$('select#billing_state').change(function() {
			    if($('input#ship-to-different-address-checkbox').is(":not(:checked)")) {
				    if( $('select#billing_state').val() == 'CA' ) $('.prop65-warning').show();
				    else $('.prop65-warning').hide();
			    }
			});
			
			$('select#shipping_state').change(function() {
			    if($('input#ship-to-different-address-checkbox').is(":checked")) {
				    if( $('select#shipping_state').val() == 'CA' ) $('.prop65-warning').show();
				    else $('.prop65-warning').hide();
			    }
			});
	        
	        // On "Ship to a different address?" checkbox change 

	        $('input#ship-to-different-address-checkbox').click(function(){
	            if($(this).is(":not(:checked)")) {
	                if( $('select#billing_state').val() == 'CA' ) $('.prop65-warning').show();
	                else $('.prop65-warning').hide();
	            } else {
	                if( $('select#shipping_state').val() == 'CA' ) $('.prop65-warning').show();
	                else $('.prop65-warning').hide();
	            }
	        });

        });
	</script>
	<?php
}
?>