document.addEventListener( 'DOMContentLoaded', function () { const sendUserNotificationCheckbox = document.getElementById( 'send_user_notification' ); const userExternalContractorCheckbox = document.getElementById( 'user_external_contractor' ); const inviteUserWpcomCheckbox = document.getElementById( 'invite_user_wpcom' ); const customEmailMessageBlock = document.getElementById( 'custom_email_message_block' ); if ( inviteUserWpcomCheckbox && sendUserNotificationCheckbox && customEmailMessageBlock ) { // Toggle Send User Notification checkbox enabled/disabled based on Invite User checkbox // Enable External Contractor checkbox if Invite User checkbox is checked // Show/hide the external email message field. inviteUserWpcomCheckbox.addEventListener( 'change', function () { sendUserNotificationCheckbox.disabled = inviteUserWpcomCheckbox.checked; if ( inviteUserWpcomCheckbox.checked ) { sendUserNotificationCheckbox.checked = false; if ( userExternalContractorCheckbox ) { userExternalContractorCheckbox.disabled = false; } customEmailMessageBlock.style.display = 'table'; } else { if ( userExternalContractorCheckbox ) { userExternalContractorCheckbox.disabled = true; userExternalContractorCheckbox.checked = false; } customEmailMessageBlock.style.display = 'none'; } } ); // On load, disable Send User Notification checkbox // and show the custom email message if Invite User checkbox is checked if ( inviteUserWpcomCheckbox.checked ) { sendUserNotificationCheckbox.disabled = true; sendUserNotificationCheckbox.checked = false; customEmailMessageBlock.style.display = 'table'; } // On load, disable External Contractor checkbox // and hide the custom email message if Invite User checkbox is unchecked if ( ! inviteUserWpcomCheckbox.checked ) { if ( userExternalContractorCheckbox ) { userExternalContractorCheckbox.disabled = true; } customEmailMessageBlock.style.display = 'none'; } } } );