ActiveX Control callback Javascript

ActiveX development for an event. Call the Javascript script on the page after completing a job in ActiveX.

There are two methods: one is to call the page script through the interface. (This has not yet come and has been tested)

Another method is to use events. I have been searching for this method for a long time. Today I suddenly see a tag.

<Object width = "600" Height = "400" classid = "CLSID: E4535151-R68A-4637-B624-5B4954F5AEC7" id = "scanobj"> </Object>

<Script language = "JavaScript" for = "scanobj" event = "regidcard (retvalue1, retvalue2)">
Alert ("ABC ");
Alert (retvalue1 );
Alert (retvalue2 );
</SCRIPT>