chore: made this part more clear

Author: mfranzke

demo/index.js

@@ -7,17 +7,22 @@ let addDynamicContent = (event) => {
 		iframeElement = document.createElement('iframe');
 
 	imageElement.setAttribute('is', 'loading-image');
+	// We're using a differing string at the end of the query than the regular one embedded directly into the page
 	imageElement.setAttribute(
 		'src',
-		'img/lazyimg-src-loadinglazy.250x150.guetzli.jpg?loading=lazy&image-width=250&image-height=150&dynamic'
+		'img/lazyimg-src-loadinglazy.250x150.guetzli.jpg?loading=lazy&image-width=250&image-height=150&dynamic-example-query'
 	);
 	imageElement.setAttribute('loading', 'lazy');
 	imageElement.setAttribute('alt', '..');
 	imageElement.setAttribute('width', '250');
 	imageElement.setAttribute('height', '150');
 
 	iframeElement.setAttribute('is', 'loading-iframe');
-	iframeElement.setAttribute('src', 'iframe.html?loading=lazy&dynamic');
+	// We're using a differing string at the end of the query than the regular one embedded directly into the page
+	iframeElement.setAttribute(
+		'src',
+		'iframe.html?loading=lazy&dynamic-example-query'
+	);
 	iframeElement.setAttribute('loading', 'lazy');
 	iframeElement.setAttribute('title', '..');
 	iframeElement.setAttribute('width', '320');