Notification when a window you opened via JS has loaded?

If I open a window via

mywin = win开发者_开发百科dow.open(...);

Is there a way I can be notified when mywin has loaded? I mean the opener be notified?

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I think onload event is what you are looking for:

mywin.onload = function(){
  alert('The window has loaded');
};

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This should work.

$(document).ready(function(){ 
   // Do something
});