diff --git a/lod.html b/lod.html
index 75c29f2..2b6ad87 100644
--- a/lod.html
+++ b/lod.html
@@ -129,6 +129,7 @@
                 let m3r = input_m3r.value;
 
                 let lod = {
+                    "time": Date.now(),
                     "m0l": m0l,
                     "m1l": m1l,
                     "m3l": m3l,
@@ -183,9 +184,13 @@
             for (let i = 0; i < localStorage.length; i++) {
                 keys.push(localStorage.key(i));
             }
+            keys.sort();
             keys.forEach(key => {
+                let timestamp = JSON.parse(localStorage.getItem(key)).time;
+                let time = new Date(timestamp).format("yyyy-MM-dd hh:mm");
                 let option = document.createElement("option");
-                option.innerText = key;
+                $(option).attr("value", key);
+                $(option).attr("label", `保存于 ${time}`);
                 $("#keys").append(option);
             });
         }
@@ -247,6 +252,28 @@
             return m0 == '' || m1 == '' || m3 == '';
         }
 
+        // 为 Date 创建日期格式化方法
+        Date.prototype.format = function (fmt) {
+            var o = {
+                "M+": this.getMonth() + 1,                 //月份
+                "d+": this.getDate(),                    //日
+                "h+": this.getHours(),                   //小时
+                "m+": this.getMinutes(),                 //分
+                "s+": this.getSeconds(),                 //秒
+                "q+": Math.floor((this.getMonth() + 3) / 3), //季度
+                "S": this.getMilliseconds()             //毫秒
+            };
+            if (/(y+)/.test(fmt)) {
+                fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
+            }
+            for (var k in o) {
+                if (new RegExp("(" + k + ")").test(fmt)) {
+                    fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
+                }
+            }
+            return fmt;
+        }
+
     </script>
 </head>