diff --git a/en/application-dev/reference/apis/js-apis-emitter.md b/en/application-dev/reference/apis/js-apis-emitter.md
index a072663e8c5cf3f667860cd72d1ef50c2bb72334..6517db5c785c31c90cf53e7393a3ba44a292bc36 100644
--- a/en/application-dev/reference/apis/js-apis-emitter.md
+++ b/en/application-dev/reference/apis/js-apis-emitter.md
@@ -152,4 +152,4 @@ Describes the data passed in the event.
 
 | Name| Type          | Readable| Writable| Description          |
 | ---- | ------------------ | ---- | ---- | -------------- |
-| data | [key: string]: any | Yes  | Yes  | Data carried by the event. The data type can be String, Integer, or Boolean.|
+| data | [key: string]: any | Yes  | Yes  | Data carried by the event. The value can be a string, integer, or Boolean, wherein a string contains a maximum of 10240 bytes. |