限制查询条件

js/xinhan-index.js

@@ -21,6 +21,11 @@ const SUPABASE_URL = 'https://chixssrphfgxvqqigkzo.supabase.co';
             const to = document.getElementById('dateTo').value;
             const out = document.getElementById('searchResults');
 
+            if (!selfNumberTerm && !trackingNumberTerm && !recipientTerm && !contentTerm && !from && !to) {
+                alert("请至少输入一个查询条件。");
+                return;
+            }
+
             out.innerHTML = '<div class="loading-state">正在连接信函数据库并执行检索...</div>';
 
             let q = sb.from('xinhan').select('*');
@@ -97,7 +102,7 @@ const SUPABASE_URL = 'https://chixssrphfgxvqqigkzo.supabase.co';
                 params.get('self_number') ||
                 params.get('selfNumber');
 
-            if (!selfNumber) return;
+            if (!selfNumber || !selfNumber.trim()) return;
 
             document.getElementById('selfNumberTerm').value = selfNumber.trim();
             handleSearch();