diff --git a/src/utils/domUtil.ts b/src/utils/domUtil.ts
index 3eadb651..f141d205 100644
--- a/src/utils/domUtil.ts
+++ b/src/utils/domUtil.ts
@@ -10,6 +10,7 @@ export function getTop(elem: any): any {
 }
 
 /**
+ * 随便写的
  * 获取 left 属性值
  * <p>
  * @param elem dom