diff --git a/assets/libs/extension/DateExt.ts b/assets/libs/extension/DateExt.ts
index 36a44a5..f4c437d 100644
--- a/assets/libs/extension/DateExt.ts
+++ b/assets/libs/extension/DateExt.ts
@@ -32,7 +32,7 @@ Date.prototype.format = function (format: string): string {
 
     let r = format
         .replace('yy', year.toString())
-        .replace('mm', (month < 10 ? '0' : '') + month)
+        .replace('MM', (month < 10 ? '0' : '') + month)
         .replace('dd', (day < 10 ? '0' : '') + day)
         .replace('hh', (hours < 10 ? '0' : '') + hours)
         .replace('mm', (minutes < 10 ? '0' : '') + minutes)
diff --git a/assets/libs/model-view/StringFormat.ts b/assets/libs/model-view/StringFormat.ts
index 5091214..5b24aae 100644
--- a/assets/libs/model-view/StringFormat.ts
+++ b/assets/libs/model-view/StringFormat.ts
@@ -9,7 +9,7 @@ class StringFormat {
         if (format === '') return value as string;
 
         format = format.toLowerCase().trim();               // 不区分大小
-        let match_func = format.match(/^[a-z|A-Z]+/gi);     // 匹配到 format 中的 函数名
+        let match_func = format.match(/^[a-z|A-Z]+/gi);     // 匹配到 format 中的函数名
         let match_num = format.match(/\d+$/gi);             // 匹配到 format 中的参数
         let func: string = '';
         let num: number = 0;