diff --git a/zh-cn/application-dev/reference/apis/js-apis-cooperate.md b/zh-cn/application-dev/reference/apis/js-apis-cooperate.md
index c3974d38632d10da466d33739aaa260a6f7ffc49..638e6c9983501b14f9347eacde5f7401a75a84cc 100755
--- a/zh-cn/application-dev/reference/apis/js-apis-cooperate.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-cooperate.md
@@ -359,7 +359,7 @@ off(type: 'cooperation', callback?: AsyncCallback\<void>): void
 function callback(event) {
   console.log(`Keyboard mouse crossing event: ${JSON.stringify(event)}`);
   return false;
-},
+}
 try {
   inputDeviceCooperate.on('cooperation', callback);
   inputDeviceCooperate.off("cooperation", callback);
@@ -372,7 +372,7 @@ try {
 function callback(event) {
   console.log(`Keyboard mouse crossing event: ${JSON.stringify(event)}`);
   return false;
-},
+}
 try {
   inputDeviceCooperate.on('cooperation', callback);
   inputDeviceCooperate.off("cooperation");