Hi narendrababu,

It is different, the InsertImage is an editor command, so you can catch it on page, but this browse button just a simple html button. This button click event is encrypted in a js file, so can not customize it. I still do not understand why you need to customzie the button click  event, you can simply replace it with your own button, so you can use any code in your own button click event.

Regards,

Ken