diff --git a/en/application-dev/reference/apis/js-apis-statfs.md b/en/application-dev/reference/apis/js-apis-statfs.md
index c35b68d23a9bfc411bd1064d58dd541d9c4e2edc..9e72201f75090675a473d286bd5b0f452a408e65 100644
--- a/en/application-dev/reference/apis/js-apis-statfs.md
+++ b/en/application-dev/reference/apis/js-apis-statfs.md
@@ -65,7 +65,7 @@ Obtains the number of free bytes of the specified file system in asynchronous mo
 
   ```
   statfs.getFreeBytes(path, function(err, number){
-      //do something
+      // Do something.
   });
   ```
 
@@ -110,6 +110,6 @@ Obtains the total number of bytes of the specified file system in asynchronous m
 
   ```
   statfs.getTotalBytes(path, function(err, number){
-      //do something
+      // Do something.
   });
   ```