Confirm before deleting entries

src/main/resources/public/js/main.js

@@ -54,9 +54,11 @@ const deleteButton = (shortUrl) => {
 
     btn.onclick = e => {
         e.preventDefault();
+        if (confirm("Do you want to delete the entry " + shortUrl + "?")) {
             fetch(`/api/${shortUrl}`, {
                 method: "DELETE"
             }).then(_ => refreshData());
+        }
     };
 
     return btn;