Specific use-case for a customer to remove the MonsterLink menu item from the site once the campaign has been seen. This will hide the campaign both on the first instance of seeing and closing the campaign, then on subsequent visits when we check if the cookie exists from previously seeing the campaign.

om-change-monsterlink-url.js

// Related, this approach will change the URL to a non-MonsterLink instead of removing the menu item

document.addEventListener("DOMContentLoaded", function() {
       if (document.cookie.split(';').some((item) => item.trim().startsWith('omSeen-swzorfrz48hzwhrtuzal'))) {
            // define the monsterlink menu item
        var monsterlink = document.querySelector("#menu-item-9624 .manual-optin-trigger");
        // change the URL and remove data-optin-slug attribute
        monsterlink.setAttribute('href', 'https://home.cognia.org');
        monsterlink.removeAttribute('data-optin-slug');
    }
});
document.addEventListener('om.Campaign.close', function(event) {
	if (event.detail.Campaign.id === "swzorfrz48hzwhrtuzal") {
		// define the monsterlink menu item
        var monsterlink = document.querySelector("#menu-item-9624 .manual-optin-trigger");
        // change the URL and remove data-optin-slug attribute
        monsterlink.setAttribute('href', 'https://home.cognia.org');
        monsterlink.removeAttribute('data-optin-slug');
	}
} );

om-remove-monsterlink-menu-item.js

// Remove menu item on page load if the "has seen" cookie exists
document.addEventListener("DOMContentLoaded", function() {
      // define the specific cookie we're targeting
       if (document.cookie.split(';').some((item) => item.trim().startsWith('omSeen-swzorfrz48hzwhrtuzal'))) {
             // define the menu item we're going to remove by ID
            var monsterlink = document.getElementById("menu-item-9624");
            // remove monsterlink from the menu
            monsterlink.remove();
        }
});

// Remove menu item when the MonsterLink campaign is closed
document.addEventListener('om.Campaign.close', function(event) {
  // define the campaign ID we're targeting
	if (event.detail.Campaign.id === "swzorfrz48hzwhrtuzal") {
		    // define the menu item we're going to remove by ID
        var monsterlink = document.getElementById("menu-item-9624");
    
        // remove monsterlink from the menu
        monsterlink.remove();
	}
} );