Signed-off-by:pengyanggit<yangpeng177@huawei.com>

Signed-off-by: Npengyanggit <yangpeng177@huawei.com>
Change-Id: I35fc5005e2e052b37277321a357bec757fd73b00

zh-cn/application-dev/reference/arkui-ts/ts-universal-events-drag-drop.md

@@ -97,11 +97,11 @@ struct Index {
 
   getDataFromUdmfRetry(event: DragEvent, callback: (data: DragEvent)=>void)
   {
-    if(hasUdmfData(event, callback)) {
+    if(this.hasUdmfData(event, callback)) {
         return;
     }
     setTimeout(()=>{
-      hasUdmfData(event, callback);
+      this.hasUdmfData(event, callback);
     }, 1500);
   }