diff --git a/groups/Tapops/js/main.js b/groups/Tapops/js/main.js
index 1f6668f..949cab2 100644
--- a/groups/Tapops/js/main.js
+++ b/groups/Tapops/js/main.js
@@ -586,13 +586,19 @@ class DocumentRepository {
             if (!input) return;
             input.setAttribute('max', '9999-12-31');
             input.setAttribute('min', '1000-01-01');
-            // Clamp year on change as a fallback for browsers that don't enforce max.
-            input.addEventListener('change', () => {
+            // Clamp year on both input (fires while typing) and change (fires on blur).
+            const clampYear = () => {
                 if (!input.value) return;
-                const [yearStr, month, day] = input.value.split('-');
-                const year = parseInt(yearStr, 10);
-                if (year > 9999) input.value = `9999-${month}-${day}`;
-            });
+                const parts = input.value.split('-');
+                if (parts.length !== 3) return;
+                const year = parseInt(parts[0], 10);
+                if (!Number.isNaN(year) && year > 9999) {
+                    parts[0] = '9999';
+                    input.value = parts.join('-');
+                }
+            };
+            input.addEventListener('input', clampYear);
+            input.addEventListener('change', clampYear);
         });
 
         this.searchInput?.addEventListener('input', (e) => {