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HTML

              
                
              
            
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CSS

              
                
              
            
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JS

              
                /* Machine-Readable Entity ID Bookmarklet */
/*
	Welcome! Thanks for checking this out. This JavaScript bookmarklet will help you easily find the MREID (when available) on a Google SERP. Questions can be left as comments at: https://www.upbuild.io/blog/machine-readable-entity-ids-seo/
*/

// First, try to grab the DOM  element that contains the MREID. NOTE: This _will_ break when/if Google changes the markup of their SERPs. 
var knowledgeNode = document.querySelector("#rhs .kno-ftr > .kno-fb > div[data-async-context]"); 
// Second, check that something was actually found above. If we try this on a null variable, we'll have issues so we need to avoid doing that. 
if (knowledgeNode !== null) {
	// A. cardID will be equal to a cleaned up MREID. 
	var cardId = unescape(document.querySelector("#rhs .kno-ftr > .kno-fb > div[data-async-context]").getAttribute("data-async-context").split("card_id:")[1].split(";")[0]);
	// B. Print a success message to the console. 
	console.log("%cSuccess! An MREID was found!","color: green; font-size: large");
	console.log("The machine-readable entity ID for\nthis search entitiy is " + cardId);
	// C. Print a success message to the SERP itself. So meta!
	var node = document.createElement("strong");
	var text = document.createTextNode("MREID is " + cardId + " | ");
	node.appendChild(text);
	var link = document.createElement("a");
	link.setAttribute("href","https://trends.google.com/trends/explore?q=" + cardId);
	link.setAttribute("target","_blank");
	link.setAttribute("rel","noopener");
	var linkText = document.createTextNode("Check via Google Trends"); 
	link.appendChild(linkText);

	// D. Worth noting, we finde the element where Google reports "About X results" and append our message to that. 
	//document.getElementById("resultStats").appendChild(node);
	document.querySelector("#kxbcct,#resultStats").appendChild(node);
	document.querySelector("#kxbcct,#resultStats").appendChild(link);
}
// Third (AKA, fallback "Second"), we do something if no MREID was found on the SERP.
else if (knowledgeNode == null) {
	// See B above.
	console.log("%cSorry! No MREID found!","color: red; font-size: large");
	console.log("No machine-readable entity ID was found on this page. This is likely not an entity Google recognizes.");
	// See C above.
	var node = document.createElement("strong");
	var text = document.createTextNode("No MREID found");
	node.appendChild(text);
	// See D above.
	document.getElementById("resultStats").appendChild(node);	
}
              
            
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