javascript - Detect when <iframe> parent element changes from hidden to shown -


how can detect when iframe shown hidden element ?

html :

<div style="display:none">  <iframe></iframe> </div>

so when show <div> jquery via $('div').show();, how can detect , reload iframe ?

ps : detection should happen inside iframe file.

not : $('div').show(function(){//do something}); or ? (now not sure)

$('div').show("slow",function(){   var iframe = $(this).find("iframe");    iframe.attr('src', "some_url"); });

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