measuring elapsed time

Webserver/src/routes/image/+page.svelte

@@ -22,6 +22,19 @@
 
 		// Load image data from file
 		imageURL = URL.createObjectURL(file);
+
+		// Time upload by saving date
+		uploadData = {
+			interval: setInterval(() => {
+				const now = performance.now();
+				const diff = now - uploadData.start;
+				const secs = diff / 1000;
+
+				uploadData.elapsed = secs.toFixed(1);
+			}, 75),
+			start: performance.now(),
+			elapsed: '0'
+		};
 	}
 </script>